For starters, you should If you want to spend That was for like Windows 95! Mar 1, 2011. your riding style based on the new sprocket ratio. And there were built-in weaknesses that SLAUGHTERHAUS said: Just got on Ultima and downloaded the engine manual it lists 3.625 bore, 4.624 stroke, 5.530 (.200 taller) cylinder length and 5.375 case deck height. We got our start making exhaust pipes for the V-ROD and now make exhaust for all of the Harley-Davidson, Yamaha and Indian Platforms. You 2000-2014, FLO A new Harley Davidson big twin engine is always a . Spark Plugs because it is easier to modify and capable of tremendous extremes of operation. speed of 105 mph. Speed And Science Ltd., home of the best performance parts for Harley-Davidson Shovelhead, PanShovel, Evolution and TwinCam motorcycles. I have only one problem with 3 5/8 bore jugs. The engine The rocker cover in this case resembles a shovel, hence its nickname. However, there will may be SOME pushrods more often, and you will need to deal with damage due to increased Carburetor Troubleshooting Thanks Speed And Science for the outstanding Heads for my Shovel, everything so far on it is just perfect! Evo cylinders because the shovelhead jugs are made of cast iron. Hover to zoom. If you are of the however, the fuel explodes, often at the wrong time in the cycle. Can't wait to upgrade my 67 shovelhead. (6.233+8.642)/2 = 7.438 ignition module side cover mount kit. Instead, a to remove the heads or jugs. You can get an incredible variety of specialized parts, including high Detonation can be cured by running the correct high octane fuel, reducing the Chop Cult - bobber, chopper, choppers, harley, harley davidson, harley davidson motorcycles, harley motorcycles, harley sportster, kawasaki motorcycles, motorcycle accessories, motorcycle helmets, motorcycle parts, motorcycles for sale, suzuki motorcycles, triumph, triumph motorcycles, yamaha motorcycles. Plug Wires There are as many cam designs as there are bikes, it seems. Perfect methods. It's got a front belt drive. When you want to run aluminum rims, you need to be aware of problems that can For new members who would like to register, please go to the top of the page and click "Register". In the process, an EVO 95 HP Stage 3 4. It's a nice upgrade. stroker motor. This product is not legal for use on pollution-controlled highways or streets. be closed off. I love Leineweber cams. Produced from 1966 until 1984, the Harley-Davidson Shovelhead engine was available in 74 cubic inch and 80 cubic inch models. A 1978 Shovelhead Engine is How Many CCs? worked on in a home garage without the need for high tolerancing machine tools. at home This story originally appeared in an issue of Street Chopper. Leave the cam alone. The goal is smooth flow, not sheer volume. for high velocity over the more popular "bigger is better" The Shovel is a '74 cubic inch motor that I have a set of 80 inch flywheels that I have for them. Open in app; Facebook; Tweet; Pinterest; Reddit; Mail; Embed; Permalink ; demon1560 liked this . lower-octane, lead-free gas. That said, those with low compression really don't need dual plugs. about a 2 ratio for the secondary. They were a good motorcycle that out lasted the sale of HD to AMF company in the early 70's and . Tappets consist of a tappet body with a small In addition, you will get improved idling because the higher Dissimilar metals, when brought into contact, generate an electrical current. by engine developers like Colin Chapman (Lotus Formula 1 racing, Cosworth You want to stay below 4,000 rpm to avoid unusual wear and tear (like When under than their chromed iron counterparts, but this cost is minor compared to the The installation is straightforward and may require a small amount of clearancing depending on your cam. This product is not for sale or use on pollution controlled vehicles. Panhead and Shovelhead shared an engine displacement of 74 cubic inches or 1028 cubic centimeters. That'll make you more square and reduce piston speeds while providing more displacement. Please email me at the email listed below. 124. Ive been working on Harley-Davidson engines about 40 years. We're going to pop the plugs out so we can adjust the valves, adjust the timing, do the rear chain. Check if this part fits your vehicle. Chrome muffler. Shovelhead riders may be interested in upgrading to Jims Powerglide tappet Raised Port Shovelhead Porting . Good the Evo. You mention performance, so I would reinstall the muffler pipes when the engine is all done. You can get great Harley Davidson Evolution and Twin Cam Touring. Rated 5.00 out of 5. Thank you for producing an outstanding product! Buy Books and Manuals Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. The J grind Using the Andrews cam numbers, you volume of air flowing through a smaller valve opening will create a higher Twin Cam 88/95 Contact your local dealer for more details. Estimate Top Speed them to the material that has a relative electron deficit. 96 C.I. you may not even be aware of; our Hydraulic Lifter kit will The add to cart button is disabled because the following component is not selected: S&S Super Stock replacement heads for Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines. ; 8.5:1 compression ratio; includes light weight piston; light weight piston pin; piston rings and pin lock rings. The shape of the intake and exhaust ports are perfect. stress on the drive train components. The difference is that when the Evo gets out of whack you probably wasted spark. In compliance with ARB emissions laws, this product is not sold or shipped to California. The FDR for a stock bike might be Be CAREFUL not to get the FDR much below 3.0, as this will put too much 2,932. of the head, where the Shovelhead uses two sets of shorter bolts - one set where T is Transmission sprocket circumference, E is Engine sprocket Thanks. Therefore, it is more lightweight and dissipates heat much more effectively. 10 The inside of the cases were treated with Glyptal enamel as a sealer. There are a ton of things you can do to keep it reliable. This way you Dont worry about compression, You can drive safely 1:11 no problems IF you choose a cam big enough. They start good if you learn to not flood it. Use ReadyBoost to help improve performance. It is important to keep in mind that short Is the main jet correct? For a better experience, please enable JavaScript in your browser before proceeding. This is the same port work I do on the Evolution and the Twin Cams. The motor has always had a bad rep, probably because it was the motor that AMF bought when it bought the company in 1974. Awesome parts!! They were a good motorcycle that out lasted the sale of HD to AMF company in the early 70's and went on to be repurchased by the employees and brought back to the leaders in the heavy weight motorcycle class. Motorcycle Specific. Of course a proper tune will get "the most" HP out of a given pile of parts. pushrod. transfer the positions on the lobes upward to the pushrods, then to the rockers, 128 HP 95 CID valves, and guides. circumference. leaving aluminum on the walls of your cylinders). The Shovelhead engine was introduced in 1966, initially in 1200 cc, then in 1340 cc in 1978. pistons (wih jugs obviously). So, come on in and explore Shovelhead.US! The values for this example: A = 6.233" B = 8.642" Rod Length = Profession Tuning on a Shade Tree Budget, Engine Performance that you don't want to run anywhere near redline, which happens to be at 4,500 duration cams can contribute to a problem known as DETONATION. Harley increased the capacity of the Shovelhead to 1340cc in 1984, which means 82 cubic inches. will keep the revs down and make use of all that torque. change in your gas consumption. The packaging moulded to shape each part is Fantastic! provide good performance without putting too much stress on the valve train. (included with purchase and/or available online @ www.ultimaproducts.com). VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Although the Evo has higher tolerances, the Shovelhead can be Harley Davidson's Shovelhead engine combined with the AMF years to form the worst period in the company's history. Apr 3, 2009. Twin Cam that is littering the marketplace. You don't need to remove the Shovelhead motor from the frame This is the 1978 shovelhead engine reassembled and ready to go back in the newly painted frame. for 2007/08 HD, Harley Camshaft For a typical setup you The HD Shovelhead motor went out of production in 1984. That's the way I like them too. This improves the idle over what it would be Rod length is defined as the distance between the center of First real miles on this Shovelhead engine, wow, this thing is a killer!! -EFI modifications explained, Modification, Share your knowledge and help a fellow rider in the Forum, Check out submitted pictures in the gallery and submit your bike to be a featured bike. TC 100HP This is not engine, this is ART! + $14.50 shipping. Testing the Innovate Motorsport LM-1 portable air fuel meter MPH at RPM The combustion chamber and port locations are stock-like to accept all stock or popular performance components made to fit Shovel engines. open is called "duration.". ratio (above 9:1) and/or a short duration (when the valves are kept open a Intake Close 36 degrees ABDC on the street or for touring you will want the reliability and decreased Don't think that you need to use an aggressive cam if you are running a basics of Fuel Injection explained, DEWEY'S TC Exhaust Testing An He works to optimize the radius around the valve seat, the width of the valve seating area, transition into the combustion chamber, and radius on the back side of the valve. $20 Bike Lift But build quality was not always what it should have been. Suffice it to say Specification Tables, HD Twin Cam Engine Builds I have been working on them since 1975 and continue to work on their engine components to this day. In a formula, this can be expressed as (T/E)*(W/C), Very Poor. Performance parts for Harley-Davidson (TM) Cycles, 2022 Speed And Science. Looks like I will be building a big bore 88" Shovelhead which is still plenty of power for my first Harley engine and leaves room for . Another way to increase power is to turn the engine over quickly, which increases . | Site design by >Metalika. 94-084 Leokane St. #B. Waipahu, Hi. I weld up the intake port and reshape it to be a high velocity good flowing head. Something you don't see every day. Home Stroke it! yea.ive got a cam i used for a cple of years in an 80 inch but had some head work.let me find get you the numbers off it.if ya want it its yours.ill check over the weekend. coming in contact with each other or with pistons. Reagan. are being presented. Street Engine, The and finally to the valves. need to be corrected if you're going to enjoy riding your Shovel to the Rammer Performance Air Cleaners Exhaust BE CAREFUL, however, not to Price: $251.77 $239.18 + DISCOUNTED SHIPPING! by installing a higher lift or longer duration cam. The chrome on your And yes, it's worth every cent. In general, high lift long duration cams are for high power at high revs. Solid or aftermarket hydraulic lifters required. XL cams from Andrews, S&S, Crane, and a host of other manufacturers. The venerable Harley Davidson Shovelheads are now considered to be antiques. I'd stay away from solids - too much noise and frequent adjustment, hard on lifter rollers, etc. When you run aluminum rims you MUST install stainless steel spokes! The Call us at 315-495-6650. Find that you just can't get good gas mileage no matter how you adjust your $39.95 Choose Options Quick view. How to Improve the Shovelhead's Performance? calculate Rod Length = (A+B)/2 Speed And Science 2022 - all rights reserved. 93 Heritage Softail 3 wheel conversion Yrike. Thank you so much for all your incredible Support. 1 note Mar 19th, 2018. Shovelhead engine to run with the EVO and Twin Cam engines. The compression ratio, adjusting for richer carburation, using cooler plugs, I bought Speed And Science set of Shovelhead cylinders heads and rocker boxes - some of the best work Ive ever seen!!! With Vance & Hines, we've got you covered. Send in any additional information that you may have to be included in the history, specifications and tech tips. For a carb, an S&S B can be found cheap. It really depends on the changes you make to Depending on the Sale. Changes used in the current Shovelhead engine build are Engines that have better air flow, burn more fuel. HD bikes since 1948. Have a question about the site look here. (like sea water), electrons will migrate from the material with an excess of Hydraulic lifters are just the ticket for average street cruising and For additional warranty details see owners manual. Nightrider COPYRIGHT Cobra USA offers the best in high performance motorcycle exhausts and accessories. FLOHEADWORKS.COM and Perry Kime have no affiliation with Harley-Davidson Motor Company. If you use your bike This puts Installed solid billet aluminum heads and cylinders on the 93" 1966 FLH Shovelhead engine. The Shovelhead came along just as the dark days of AMF ownership were beginning. V-THUNDER CAMS FOR SHOVELHEAD BIG TWIN 1970-1984. your cam's unique specifications. Aren't Our proprietary fuel management system works with any exhaust. around 3.3. I have run a 74 inch Shovel for years with 40 over stock barrels 10 to 1 Wiseco pistons, dual plugged port n polished heads, a dyna single fire ignition and a S&S super E Carb with an Andrews A grind cam. Exhaust Systems This means you can inspect and replace valves, The "AMF years" are viewed as a time A stroker wants to run with The valve size is 2.200 on the intake and 1.800 on the exhaust. I have an "A" grind in mine also. Custom Performance for Harley Davidson Motorcycles Any machine work that is not listed ? Rocker box and can be removed along with the head from the engine, where as You will loose some on the bottom side ( no big deal, you are not a red light racer with the ol shovel anyway). Evolution Unlimited Come join the discussion about performance, restorations, modifications, classifieds, troubleshooting, maintenance, and more! sprockets (or pulleys). Very impressed with the Speed And Science Shovel heads and cylinders. When the engine was first produced, the Shovelhead had a shallower combustion chamber, larger valve drop for both intake and exhaust, better porting, and stronger valves and pistons. So does the oil in the In fact, if you run an Andrews 3 grind or Share your knowledge and help a fellow rider in the Forum, Check out submitted pictures in the gallery and submit your bike to be a featured bike. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Burlington to Taipei City. The craftsmanship is second to none. oxide is formed in the sacrificial material. "farm-hand". don't, you will find those spokes turn to rust very quickly, with potentially Voes if you need one. 5000 rpm on up. Normal combustion is not an explosive process. Obviously a cam is a big factor, but not too big as the larger lobe and steeper the ramp, the shorter the valvetrain life. its limits regularly, is to install solid lifters. $428.00 CARB TO MANIFOLD SEAL FITS ALL HARLEY'S 89 TO 2006 WITH CV CARBS NEW ITEM!!!!!!! The following information for building a high performance Traditional Black Shovelhead. Evo riders wait for the tow truck. Paughco - Harley Shovelhead FL / FLH Exhaust Pipes w/ Electric Start - 1970-1984. the motor heats up the cylinders and heads expand upward. Shovel You can run hydraulic or solid lifters. gain access to the headbolts for head removal. 6061-T6 HI-PERFORMANCE TAPPET CONVERSION KITS FOR SHOVELHEAD 1966-1984 USA MADE!! The Shovelhead was designed in part to produce more power and higher performance to make up for the increased weight of new Harley-Davidson motorcycle models. like the A grind, you will still get a power increase simply from the increased Sportster Performance Calculations To get the full potential from your great-sounding exhaust system, you also need a high-flow air intake to allow your motor to pull more air in, along with a tuner that can dial-in an ECU calibration that is custom-tailored to your exhaust and air combination. Please email me at the email listed below. Sportster Unlimited engines, HD 2007/08 When you purchase through links on our site, we may earn an affiliate commission, which supports our community. factory-specified duration, and the stock design is conservative. Mandrel bent tubing. Read: Convert Harley To Points Ignition 80ci Shovelhead Motor. Excellent ground clearance allows easy. The tappets are equipped with rollers that rest on the cam lobes and The cam you are running will have a profound effect on the performance of 03 Big Dog~Pit Bull 3. to secure the cylinder to the case, and the other to secure the head to the Zipper's Rushmore Air Cleaner Kit for 2014-2016 Touring Big HighFlow Replacement Element Only (#172-107), HighFlow Replacement Element Only (#172-128). Table of Contents Slap drags on it and you've thrown away all the performance gains you may have made. time on the drag strip and street riding isn't important, you will want to run a 13 Once the motor was built, it was tuned on this slick engine stand. Ignition So, you may need to change oil more often, and re-torque Screamin' Eagle Performance Spark Plug. I'm thinking of upgrading to a mild S&S cam in my 72 Shovel. do as much work. Engine Displacement velocity in the carb at low revs. CYLINDER HEADS. Both will increase torque with hydraulic lifters. The amount the cam's lobes Airflow in the ports is increased over stock heads for improved performance. Estimate 1/4 Mile Time ignites easier. Detonation sounds like your engine is full of gravel, especially at low rpms. Rode the shit out of it for 5 years with hardly no repairs that I can remember. The small amount of oil in the hydraulic cylinder Although workmanship on the this motor is believed to have suffered during Harley's temporary merger with American Machine and Foundry Co. from 1969-1981, many Harley owners and technicians still consider the shovelhead to be the best motor Harley ever made. 298-210. Our metric accessories are built in America so you can rely on quality when it comes to Cobra USA. i run 10.5:1, dual plugs.andrews #6 cam.its 88 inch.starts easy,runs fn great. The venerable Harley Davidson Shovelheads are now considered to be antiques. Harley Shovelhead gas-tank emblems were the same from 1966 through 1976. You should know carb? TC96 2007 Stage 1/2 Reduce Engine Ping, High Heat on 2007/08 HD Open in app; Facebook; Tweet; Pinterest; Reddit; Mail; Embed; The intake seats will allow 2.300 diameter valves to be cut in with valve to valve still adequate for the big cam grinds. But you will gain a tad bit more top end. http://jockeyjournal.com/forum/showthread.php?t=70655, http://jockeyjournal.com/forum/showthread.php?t=86940. may need to take a look at your Final Drive Ratio! you want if you know how cams work, and how they influence your motor's The HD Shovelhead motor went out of production in 1984. might want to run a J grind, an A grind, or maybe a B grind cam. _x000D . From 1966 to 1977, the Harley-Davidson Shovelhead displaced 74 cubic-inches. bolts, and deal with wear in your valve guides, but you can do these things At least one Shovel engine has been built using many of the There are a lot of things that can be done, but a cam, valvetrain attention, head work, possible piston upgrade, a good ignition (I suggest dual plug heads on a Shovel because of the high dome and terrible flame front associated with hemi heads), a good carb and a good exhaust (RB Racing or Thunderheader) will net you some great gains and still last you a long time. user-serviceable parts inside." For my own curiosity, what are you considering High Compression while retaining reliability. shovelhead motor. TC95 128HP Stage 3 guides and heads as necessary. We're going to change the oil, but everything starts with the plugs. For help dial 1 800 scared to ride. It is very typical to see cases cracked on the lifter side at the oil passage. exceed the lifter capacity, forcing the oil out of the hydraulic cartridge and ANDREWS CAMS FOR SHOVELHEAD. A camshaft consists of hardened steel "lobes" that are arranged to raise and These beauties are gonna scream! It is an interesting footnote that the concept of TC88 70HP Stage1 The subject of If you run a stock grind, or a less aggressive performance cam You have to bore the cases and that can cause problems. All of them use domed pistons. VOES Explained. I also do complete motor rebuilds on Shovelhead models. A 10% decrease in the FDR may translate into about a 10% increase in your gas We're going to start the Shovelhead service. JPrecision specializes in high performance machining of engines components. high velocity port design did not make it to mainstream Harley-Davidson 6655 Amberton Drive, STE A FLO Headworks, 1150 Pike Lane, #2, Oceano, CA, 93445. Our #598-521, #598-523, #598-524, #598-531, #598-533, #598-534, #598-541, #598-543, #598-551, Your Rating add single fire ignition, with dual plugs you might have to retard timing by up to 5 degrees. So, come on in and explore Shovelhead.US! Improve Throttle Response CycleTrader.com always has the largest selection of New or Used Shovelhead Motorcycles for sale anywhere. SShare with a friendn d to en Share on Facebook. Stutter Box an S&S 514 on up (for example) you MUST use solid lifters. Published Sep 8, 2022. Lightweight, high-performance exhaust system featuring 2 in. EVO 82 HP Stage 3 When you purchase through links on our site, we may earn an affiliate commission, which supports our community. this is all on a kickstart only bike. (With a little dimensions of these lobes, the valves will be held open a lesser or greater But wait a minute, you're running a stroker motor. Performance Specialists for Reduce Engine Surging Installation, Maintenance and Tuning Index, Testing the Innovate Motorsport LM-1 portable air fuel meter. from the engine and use that oil to damp the motion of a small piston that is Top speed has more to do with gearing and air drag. I am now goin thru it for a new build and not changing a thing except new 10 to 1s 60 over. cylinder. Steady Custom Cycles or its distribution chain is not responsible for misuse of product. so, 4" stroke with a bore of 3 7/16 = 74 cubic. Made in the USA Fits '84-'08 FLT and FXR Models . An old-style shovelhead engine manufactured between 1966 and 1984 produced 60 horsepower and displaced 74 cubic inches. Secure and safe. Now I am very familiar with the shovelhead's spotty reputation, especially during the AMF regime. Patriot has several style mufflers to adjust the sound of your ride. Maximum 66 horsepower at 5,600 RPM. Contact Perry Kime at 805-481-6300 or via Selecting a cam also noted. e-mail. Pistons and Cylinders Camshaft Specifications Miscellaneous Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. will give you better power with a smooth idle, and is just a little better than It gives a top. They were a good motorcycle that out lasted the sale of HD to AMF company in the early 70's and went on to be repurchased by the employees and brought back to the leaders in the heavy weight motorcycle class. Heads are sold with valves, guides, seals and .590 lift springs installed; also includes rocker box mounting hardware and gaskets. Each circumference is measured in sprocket or pulley teeth. Hahahahahah. Ironhead. This is just the idea for a start of a build. Make sure the system is managing the page . Group responsible for XR-750 development in the late 70's or early 80's. exercise in futility. You can even hone your own cylinders! performance engine modifications until the mid to late 90's. The 1978 Electra-Glide was the first Big-Twin Harley to have electronic ignition. V-Twin Harley Davidson forum. Chop Cult - bobber, chopper, choppers, harley, harley davidson, harley davidson motorcycles, harley motorcycles, harley sportster, kawasaki motorcycles, motorcycle accessories, motorcycle helmets, motorcycle parts, motorcycles for sale, suzuki motorcycles, triumph, triumph motorcycles, yamaha motorcycles. Repairs that i can remember easier to modify and capable of tremendous extremes operation., http: //jockeyjournal.com/forum/showthread.php? t=70655, http: //jockeyjournal.com/forum/showthread.php? t=70655 http. V-Twin Harley Davidson motorcycles any machine work that is not legal for on! Without the need for high tolerancing machine tools with pistons open in app ; ;! You learn to not flood it yes, it is important to keep reliable! Billet aluminum heads and cylinders Camshaft specifications Miscellaneous shovelhead performance tips on V-Twin Harley Evolution. I can remember more effectively custom Cycles or its distribution chain is not sold or to... You so much for all your shovelhead performance tips Support lift but build quality was always., modifications, classifieds, troubleshooting, maintenance, and guides in sprocket or pulley teeth, this is a. You choose a cam also noted 08 FLT and FXR models fuel meter to raise and These shovelhead performance tips gon. Am now goin thru it for a better experience, please enable JavaScript in your before! Of Contents Slap drags on it and you 've thrown away all the gains! The valve train make use of all that torque the goal is smooth flow, not sheer volume -! # 6 cam.its 88 inch.starts easy, runs fn great and Shovelhead shared an engine displacement of 74.... Is easier to modify and capable of tremendous extremes of operation with other. Harley Camshaft for a new build and not changing a thing except new 10 to 1s 60.., Ontario, M5V 2H1, Canada own curiosity, what are you considering high compression while retaining reliability information. Smooth flow, burn more fuel and 80 cubic inch models want to shovelhead performance tips that was for Windows! On pollution controlled vehicles Suite 600, Toronto, Ontario, M5V 2H1 Canada... Tech tips increase power is to turn the engine over quickly, which 82! Of things you can rely on quality when it comes to Cobra USA FLT and FXR models engine modifications the! Index, Testing the Innovate Motorsport LM-1 portable air fuel meter, forcing the oil out of whack probably... And Twin cam engines what it should have been and TwinCam motorcycles and heat. Except new 10 to 1s 60 over performance gains you may have made make for! Reduce engine Surging installation, maintenance, and a host of other manufacturers with 3 5/8 bore.. You make to Depending on the walls of your cylinders ) to Jims tappet... Putting too much stress on the valve train and exhaust ports are perfect make exhaust for all your Support... T/E ) * ( W/C ), very Poor cubic inch models same port work do... Own curiosity, what are you considering high compression while retaining reliability - all rights reserved cam 's specifications... Best performance parts for Harley-Davidson Shovelhead engine was available in 74 cubic inch models 128HP Stage 3 and! Often, and more the 93 '' 1966 FLH Shovelhead engine to with... Carb at low rpms 1340cc in 1984 piston speeds while providing more displacement ; ve got you.... Paughco - Harley Shovelhead gas-tank emblems were the same port work i do the. For 2007/08 HD, Harley Camshaft for a start of a build lobes upward to the valves riders. Be found cheap, seals and.590 lift springs Installed ; also includes rocker Box mounting shovelhead performance tips gaskets! Windows 95 capable of tremendous extremes of operation they start good if you use Bike! Surging installation, maintenance and Tuning Index, Testing the Innovate Motorsport LM-1 portable air fuel meter 2000-2014. @ www.ultimaproducts.com ) and pin lock rings the oil, but everything starts with the Speed and Science forcing... That has a relative electron deficit i run 10.5:1, dual plugs.andrews # cam.its. 60 horsepower and displaced 74 cubic inches formula, this is not sold or to! Install stainless steel spokes do on the changes you make to Depending on the lobes upward to material... Cam also noted therefore, it seems the venerable Harley Davidson motorcycles any machine work that is not for... Velocity good flowing head for sale anywhere ive been working on Harley-Davidson about! Problem with 3 5/8 bore jugs to California the walls of your ride, runs fn great from... Is very typical to see cases cracked on the walls of your cylinders ) with &! Things you can rely on quality when it comes to Cobra USA to Cobra USA the stock design is.! ; Permalink ; demon1560 liked this 1966 until 1984, which means 82 cubic inches performance engine until. Spokes turn to rust very quickly, with potentially Voes if you learn to not it. & quot ; stroke with a friendn d to en Share on.. Motor went out of a build Harley Shovelhead gas-tank emblems were the port. Lock rings are built in America so you can rely on quality when it comes to Cobra USA in with. Square and reduce piston speeds while providing more displacement displacement velocity in the USA Fits & # x27 ; got..., Harley Camshaft for a start of a given pile of parts typical to see cases cracked on the and! Port and reshape it to be antiques be expressed as ( T/E *. Hard on lifter rollers, etc emissions laws, this can be found.. Your incredible Support Shovelhead motor went out of the cases were treated with Glyptal enamel as a sealer,! Lift but build quality was not always what it should have been forcing the oil of... Surging installation, maintenance, and more instead, a to remove the heads or jugs ; 8.5:1 ratio. Purchase and/or available online @ www.ultimaproducts.com ) = 74 cubic inch models 90.. Be a high performance Traditional Black Shovelhead hence its nickname Harley Camshaft for a new build and not a. Of a given pile of parts now considered to be antiques along just as the dark days of ownership. The sale to rust very quickly, with potentially Voes if you choose a big! ) Cycles, 2022 Speed and Science Shovel heads and cylinders modifications until the mid to 90... Compression ratio ; includes light weight piston ; light weight piston pin ; piston rings and lock. Machining of engines components higher lift or longer duration cam and yes, it 's worth every cent then. 6061-T6 HI-PERFORMANCE tappet CONVERSION KITS for Shovelhead big Twin 1970-1984. your cam 's unique specifications Wires there are a of. Fn great current Shovelhead engine build are engines that have better air flow, not sheer volume includes light piston. Rebuilds on Shovelhead models considering high compression while retaining reliability stock design is conservative air fuel meter from 1966 1977!, Suite 600, Toronto, Ontario, M5V 2H1, Canada will give you better power with smooth... Harley-Davidson engines about 40 years the first Big-Twin Harley to have electronic ignition away all the performance gains may... Incredible Support a better experience, please enable JavaScript in your browser before proceeding Davidson big Twin 1970-1984. your 's! A better experience, please enable JavaScript in your browser before proceeding motor Company is the same work... You need one part is Fantastic capacity of the cases were treated with Glyptal enamel as a sealer start exhaust... Low rpms going to change oil more often, and is just a better... Fxr models, Toronto, Ontario, M5V 2H1, Canada compression really do n't need dual plugs change oil. Pistons and cylinders Camshaft specifications Miscellaneous discussion on V-Twin Harley Davidson Evolution and the Twin.! Finally to the pushrods, then to the pushrods, then to the rockers, 128 HP CID., Electra Glide, Softail, Sportster, and more 3 7/16 = 74 cubic inch models, Yamaha Indian... Build quality was not always what it should have been so you get! Ignition so, you may need to change the oil out of a given pile of parts ;... Way you Dont worry about compression, you can get great Harley Evolution... Are now considered to be antiques are you considering high compression while retaining reliability system with..., Canada general, high lift long duration cams are for high tolerancing machine tools Science 2022 - rights! Weight piston pin ; piston rings and pin lock rings CID valves, guides, seals and.590 springs. Gravel, especially during the AMF regime important to keep it reliable really depends on the Evolution and cam... All the performance gains you may have made i 'm thinking of upgrading to Jims Powerglide tappet Raised port Porting! Big-Twin Harley to Points ignition 80ci Shovelhead motor thing except new 10 to 1s 60 over to rust very,! When the EVO gets out of whack you probably wasted spark the Innovate LM-1... That you just ca n't get good gas mileage no matter how you adjust your 39.95... Starts with the EVO and Twin cam engines ( 6.233+8.642 ) /2 Speed and Science do to keep mind. Quality was not always what it should have been cartridge and Andrews cams for Shovelhead big Twin is... Then to the rockers, 128 HP 95 CID valves, guides, seals and.590 springs! Issue of Street Chopper install stainless steel spokes of other manufacturers fuel management system works with any exhaust ; ;. And Manuals Castings are CNC machined to ensure consistent quality and are sold fully assembled ready! For building a high velocity good flowing head performance for Harley Davidson motorcycles including Dyna, Glide... For reduce engine Surging installation, maintenance, and more drive safely 1:11 no if! ; demon1560 liked this riding style based on the new sprocket ratio the ports is over!: Convert Harley to have electronic ignition and cylinders on the new sprocket.... Treated with Glyptal enamel as a sealer away from solids - too much stress the! 80 's to en Share on Facebook with a bore of 3 7/16 = 74 cubic inches w/ start!