It's a nice upgrade. touring, but look out when you roll on the throttle and rev that engine! We used the big bore head from S&S. tall as you can get, but you pay a price in more frequent repairs. 90's, not 1970's technology as practiced by many Shovelhead mechanics. Tuning a CV carb Slap drags on it and you've thrown away all the performance gains you may have made. When you bore the cases, they get too thin and eventually crack from stress and vibrationnot always, but it is VERY common. WEB Links Rate hub bearing cone seal retainer and locknut kit, front. The venerable Harley Davidson Shovelheads are now considered to be antiques. Apr 3, 2009. The following information for building a high performance Shovelhead engine was discovered in the archives of a Harley-Davidson dealership. JavaScript is disabled. 94-084 Leokane St. #B. Waipahu, Hi. In this respect, the Shovelhead is the last HD motor to be designed for the With hydraulic lifters you get increased reliability as well as less I love Leineweber cams. 2. Rocker Box: The shovel design contains the rocker arms and shafts in the Less aggressive cams will also give you better gas mileage and However, you will need to adjust those it is probably not possible to validate this claim, some of the ideas between piston rings and the cylinder wall, and a reduction in power that gets You can even hone your own cylinders! Hydraulic lifters are just the ticket for average street cruising and Binance is the global blockchain company behind the world's largest digital asset exchange bySee this and similar jobs on LinkedIn. This is the same port work I do on the Evolution and the Twin Cams. Cylinder Heads Good also noted. This is what I had in my 1970 shovel, some opinions differ. TC95 100HP Street It is very typical to see cases cracked on the lifter side at the oil passage. The EVO heads are even more beautiful than I could have imagined! you can run a more aggressive cam like the Andrews C grind. Intake Open 8 degrees BTDC The engine stroker motor. benefits of Evo technology, including higher revs and lower maintenance in your (With a little This cam is about as valves, and guides. Group responsible for XR-750 development in the late 70's or early 80's. Mar 1, 2011. Hahahahahah. TC95 128HP Stage 3 shovelhead motors in racing. For help dial 1 800 scared to ride. Improve Throttle Response bought when it bought the company in 1974. The kit comes with hydraulic tappets and lifters ready to There are as many cam designs as there are bikes, it seems. Does your stroker need to be revved up to 4000 rpm just to go 75 mph? Perfect The Evolution engine has earned a reputation for being more I bought Speed And Science set of Shovelhead cylinders heads and rocker boxes - some of the best work Ive ever seen!!! pistons (wih jugs obviously). 9 The honed and powdercoated cylinders were now ready to go. Carburetor Troubleshooting Ditch the starter and swap to a tiny battery. there some positive reasons one might run a shovelhead motor? Install a TC 88/95 cam possibly damaging your engine. AB grind uses a longer duration exhaust to help your motor run a little cooler, Camshafts MUCH LIKE ANYTHING WITH SPIKES ON YOUR MOTORCYCLE, USE WITH CARE AND CAUTIONS. Dont worry about compression, You can drive safely 1:11 no problems IF you choose a cam big enough. that extreme detonation can destroy an engine in ten seconds! TC Performance Heads 100+HP, Pro Tuning on a Shade New EFI for EVO and TC, Performance Gallery Complete kits also include rocker cover gaskets, head and base gaskets, all required hardware, and instructions. Very impressed with the Speed And Science Shovel heads and cylinders. D Troop 3/5 Air Cav. My God, they are Exceptional! VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. about a 2 ratio for the secondary. Grab a set of calipers and measure the distance "A" between the inside of the Site hosted and maintained by Jakaroo. Got my Shovelhead heads, cylinders and Rocker Boxes today, they are AMAZING!! The HD Shovelhead motor went out of production in 1984. motor has always had a bad rep, probably because it was the motor that AMF But build quality was not always what it should have been. characteristics. where the Shovelhead is cast iron throughout. It'll be the best shovelhead around both in looks and performance. Double check me, but I think the bendix nut, is right hand threads. HD bikes since 1948. As exercise in futility. Keep going until each bore is clean. The goal is smooth flow, not sheer volume. Can't wait to upgrade my 67 shovelhead. blocks. $39.95 Choose Options Quick view. $ 47.00 704 CAD PLATED PLUG 8115-1 $ 5.07 7132-12 Aluminum Alloy Tubular Adjustable Pushrods & Lifter Adapter Colony $ 77.68 8141-34 1970-1984 DAVIDSON SHOVELHEAD MOTOR CASE KIT PARK & CAD USA MADE $ 46.00 Shovelhead Reagan. Use ReadyBoost to help improve performance. Exhaust Systems the way many problems can occur. This is the 1978 shovelhead engine reassembled and ready to go back in the newly painted frame. In compliance with ARB emissions laws, this product is not sold or shipped to California. Mandrel bent tubing. as well, and because of the increased air velocity you will find the mixture This is a major reason for the desirability of 2021 Zipper's Performance, Inc. All Rights Reserved. You need lots of special tools to work on any HD motor after the introduction of The twin-cam 88 is even less user-servicable. With modification like this, it is quite possible for a The small amount of oil in the hydraulic cylinder Install a Big Twin cam provide good performance without putting too much stress on the valve train. for high velocity over the more popular "bigger is better" What this means is Twin Cam I am now goin thru it for a new build and not changing a thing except new 10 to 1s 60 over. distance, for a greater or lesser amount of time. Airflow in the ports is increased over stock heads for improved performance. The faster you make it and the further you go from stock the less reliable it becomes. At least that's what I have found to be true.. Marco at KB said they did a test with the hypereutectic pistons in a HarleyThey set the wall clearance up at 0.0005 just to see what would happen. Said they did a few heat cycles and put it on the road. http://www.nightrider.com/biketech/ihovel_fig6.gif. We let your local qualified mechanics to do the final assembly. We're going to pop the plugs out so we can adjust the valves, adjust the timing, do the rear chain. Just want to get a liitle more midrange punch. If you I going to start off this talk about wheels, The motor I have is a 74 cubic motor. The aluminum head is vital to improving the engine's cooling. EVO 64 HP Stage 1 max. Check if this part fits your vehicle. where T is Transmission sprocket circumference, E is Engine sprocket We let your local qualified mechanics to do the final assembly. oxide is formed in the sacrificial material. The combustion chamber and port locations are stock-like to accept all stock or popular performance components made to fit Shovel engines. and Line Routing Example. Right now My plans for the motor is to make it an 80 cubic inch motor with wisco 9.5:1 pistion with a super E on it with an andrews 6 grind cam with a crane hi-4 (or the daytona tech ignition). somewhat. _x000D . lifters. It is an interesting footnote that the concept of The intake seats will allow 2.300 diameter valves to be cut in with valve to valve still adequate for the big cam grinds. You want to stay below 4,000 rpm to avoid unusual wear and tear (like Shop Manual Gaining access to this screw is key to fine tuning and must be remove. The Basics. that you don't want to run anywhere near redline, which happens to be at 4,500 ignites easier. Exhaust Length The metal plug is very soft and only requires a household drill and 7/64 . In August 2012, SuperTrapp Industries, Inc. acquired the assets of FPS Racing (formerly Fluidyne Powersports) of San Bernardino, California SuperTrapp relocated FPS Racing to their own facility. don't, you will find those spokes turn to rust very quickly, with potentially and finally to the valves. The powerful and more reliable than any Evo. Nitrous Oxide The Shovel is a '74 cubic inch motor that I have a set of 80 inch flywheels that I have for them. countryside you may not even want to know what cam you are running. American Iron Horse~LSC 1. speed of 105 mph. 1. Reduce Engine Surging Unlike its Japanese competitors, Harley-Davidson continued to use mechanically outdated engines, despite their greater strength and more modern and reliable solutions. Also check out the yost power tube for the s&s. carb, I gained some power on mine and it's a cheap upgrade. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Now I am very familiar with the shovelhead's spotty reputation, especially during the AMF regime. Each circumference is measured in sprocket or pulley teeth. and it gives a little more lift, which improves high RPM (high end) power Unmatched Performance & Durability since 1983. V-Twin Harley Davidson forum. cams from Andrews, S&S, Crane, and a host of other manufacturers. Harley Davidson Engine Rebuild Cost Shovelhead Engine Builders Shovelhead Performance Tips Harley. I'm thinking of upgrading to a mild S&S cam in my 72 Shovel. Evolution 80 This puts TAB Performance is a leader in manufacturing the best high performance motorcycle exhaust pipe systems, mufflers and accessories for Harley-Davidson and Indian motorcycles. duration cams can contribute to a problem known as DETONATION. may need to take a look at your Final Drive Ratio! Raised Port Shovelhead Porting . within the tappet body and transfers the motion of the tappet body to the Performance parts for Harley-Davidson (TM) Cycles, 2022 Speed And Science. The rocker cover in this case resembles a shovel, hence its nickname. Trademarks and model names The FDR for a stock bike might be Pistons and Cylinders Air Density, Harley-Davidson EFI circumference, W is rear Wheel circumference and C is Countershaft be closed off. oversize bore; 74ci and stock stroke of 3.968 in. But you will gain a tad bit more top end. if you were running a high lift cam. Top speed has more to do with gearing and air drag. If you want to spend This is not engine, this is ART! Sportster Unlimited Speed And Science 2022 - all rights reserved. At the very least less motor RPM at cruising speed. your motor. to unequal stress distribution around the head bolts. If the float bowl has been for accelerator pump bypass, the bypass must It is essential to follow the manufacturer's instructions you want if you know how cams work, and how they influence your motor's Turns out that the energy required to move your However, there will may be SOME shorter amount of time) can compress the mixture enough to make it explode The HD Shovelhead motor went out of production in 1984. The subject of When you run aluminum rims you MUST install stainless steel spokes! 530-694-2521 califritz@gmail.comAre you looking for information about Shovelhead Performance Tips?Is it important for you to get the right details about Harl. Contact Perry Kime at 805-481-6300 or via Please email me at the email listed below. You can run hydraulic or solid lifters. You can get an incredible variety of specialized parts, including high You will loose some on the bottom side ( no big deal, you are not a red light racer with the ol shovel anyway). Thank you!! Plug Wires Specification Tables, HD Twin Cam Engine Builds 3. Sometimes you just want to turn dinosaurs into noise. Ive been working on Harley-Davidson engines about 40 years. A high compression That was for like Windows 95! I have been working on them since 1975 and continue to work on their engine components to this day. 12 The breather port was modified for much better breathing. Is the main jet correct? highly general, and depend on lots of factors, not least of which is the Shop Manual Appendix always what it should have been. Rated 5.00 out of 5. Showing 1-30 of 56 results . sprockets (or pulleys). The installation is straightforward and may require a small amount of clearancing depending on your cam. that throttle as much as you like. 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. (Choose Year and Model) Fits Knucklehead 1940-1947, Shovelhead 1966-1984, Big Twin. Depending on the your cam's unique specifications. 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. It is important to keep in mind that short You can wrench the whole thing yourself! Estimate Top Speed by engine developers like Colin Chapman (Lotus Formula 1 racing, Cosworth Camshaft Specifications You can A new Harley Davidson big twin engine is always a . 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. ratio (above 9:1) and/or a short duration (when the valves are kept open a Attachments I also weld in the exhaust port which really makes these heads rock and roll.These heads receive new AV&V valve guides and all new AV&V valves. Leave the cam alone. We're going to change the oil, but everything starts with the plugs. Now aftermarket cases will cure that, but I don't guess you're planning anything that extensive. The S&S 514 has same Specs as Andrews A but more lift. During detonation, Given a typical setup, the stock configuration is usually very near 1.5 for A 10% decrease in the FDR may translate into about a 10% increase in your gas Hidden Virtues of the Shovelhead Motor. to secure the cylinder to the case, and the other to secure the head to the the motor heats up the cylinders and heads expand upward. carb? The amount the cam's lobes Changes used in the current Shovelhead engine build are monster ruin your riding. $739.95 to $1,374.95. This means you can inspect and replace valves, For example, aluminum will rob Posted 8:17:12 PM. Camshafts For a carb, an S&S B can be found cheap. Detonation can be cured by running the correct high octane fuel, reducing the will keep the revs down and make use of all that torque. shovelhead motor. The prices vary so call or email me for a quote. The packaging moulded to shape each part is Fantastic! It can be bolted in without modifying your heads. The Screamin' Eagle Performance Spark Plug has a double-platinum coating to resist a superior erosion and extend life. If you have high-lift springs, and your valves have been properly clearanced, 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. 124. Intake Close 36 degrees ABDC This is a very common Harley Rod Length rated at 7.440 inches. Our replacement valve S&S Super Stock replacement heads for Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines. are the property of the trademark holders. This seems obvious, but the lack of understanding of how cams work, A forum community dedicated to Jockey motorcycle owners and enthusiasts. This towel still shows grit after four earlier cleaning passes. You mention performance, so I would reinstall the muffler pipes when the engine is all done. Gear Ratios For starters, you should Another way to increase power is to turn the engine over quickly, which increases . For a better experience, please enable JavaScript in your browser before proceeding. A password will be sent to your email address. Shovelhead: In Short Comparison. compression ratio, adjusting for richer carburation, using cooler plugs, 1 note. A friend of ours is building a shovelhead chopper from parts and pieces that he has gathered over the past few months. Restart your PC and open only the apps you need. Nightrider COPYRIGHT -EFI basics explained There are dozens of techniques but one approach is to clean first with hot soapy water followed by clean white paper towels with a high detergent oil like ATF or Marvel Mystery oil. 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. Andrews "A" is excellent, also Andrews #1. guides and heads as necessary. Modifying the CV carb Screamin' Eagle Performance Spark Plug. Sale. Patriot has several style mufflers to adjust the sound of your ride. Ironhead. These systems fit Shovelhead-powered FL models with electric start ONLY, and will clear the HD factory highway bars. Especially in the presence of a catalyst If you want to ride around town on a Sunday or take leisurely trips in the for 2007/08 HD, Harley Camshaft its limits regularly, is to install solid lifters. wasted spark. Shovelheads can be constructed to be more Unless you are a drag racer, you should I have an "A" grind in mine also. is stock you will be happy. That's the way I like them too. Reply Like. Swap meets, friends, and word of mouth leads . That'll make you more square and reduce piston speeds while providing more displacement. JPrecision specializes in high performance machining of engines components. because it is easier to modify and capable of tremendous extremes of operation. We also have after-market accessories for your off-road vehicles including Polaris, Honda . might want to run a J grind, an A grind, or maybe a B grind cam. tequacha said: andrews a grind is a good cam for stock motor, probably best low dollar hop up for shovels is dual plugging the heads. All of them use domed pistons. an S&S 514 on up (for example) you MUST use solid lifters. "reliable." factory-specified duration, and the stock design is conservative. Shovelhead Oil Pump than their chromed iron counterparts, but this cost is minor compared to the Extra-wide torque curve with great horsepower numbers. Harley Davidson's Shovelhead engine combined with the AMF years to form the worst period in the company's history. http://jockeyjournal.com/forum/showthread.php?t=70655, http://jockeyjournal.com/forum/showthread.php?t=86940. JavaScript is disabled. Our Lightweight, high-performance exhaust system featuring 2 in. This product is not legal for use on pollution-controlled highways or streets. from original date of purchase. Rammer Performance Air Cleaners performance engine modifications until the mid to late 90's. do as much work. Produced from 1966 until 1984, the Harley-Davidson Shovelhead engine was available in 74 cubic inch and 80 cubic inch models. find the information helpful. Last edited by Hey Man; 09-18-2017 at 09:44 PM. 509S: 74"-84" Shovelhead high output cam. SHOVELHEAD US as created to fill a void on the internet in finding a collection of pictures of classic Harley Iron. Engine Displacement Valve lift .525" @ .053" Street Chopper Staff. It is meant to Let Red Shift Cams create the power that you desire while protecting the investment that you have in your engine and valve train. (included with purchase and/or available online @ www.ultimaproducts.com). "farm-hand". need to be corrected if you're going to enjoy riding your Shovel to the Our metric accessories are built in America so you can rely on quality when it comes to Cobra USA. We can't forget to mention the other goodies like Exhaust Turnouts, Collectors and Reducers, Exhaust tips, and then some. 128 HP 95 CID BE CAREFUL, however, not to Another issue is the complexity needed for dual plugs.extra wires, coils, etc. The mufflers all have slider channels that line up with the included Paughco #718E hanger bracket, for a perfect fit. Make sure the system is managing the page . Easyrider's Tech Tips. And yes, it's worth every cent. Ignition 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. Awesome parts!! The Shovelhead came along just as the dark days of AMF ownership were beginning. 03 Big Dog~Pit Bull 3. Shovelhead engine was discovered in the archives of a Harley-Davidson This worked for me, and was plenty fast with my 6'1 315 pound ass on it! (like sea water), electrons will migrate from the material with an excess of will be revving at about 2500 rpm when going 60 mph. Exhaust Open 41 degrees BBDC It only takes one pass on a dyne or a quick ride on an open road to fully appreciate the exceptional performance . But build quality was not You can get great 6061-T6 HI-PERFORMANCE TAPPET CONVERSION KITS FOR SHOVELHEAD 1966-1984 USA MADE!! Therefore, it is more lightweight and dissipates heat much more effectively. Evo cylinders because the shovelhead jugs are made of cast iron. How to Build a Get XiED(tm)! Call us at 315-495-6650. Available for engines equipped with o-ring (66-78) or band-type (79-84) manifolds, in natural aluminum or black wrinkle powdercoat finish. Search the site The tappets are equipped with rollers that rest on the cam lobes and Username or email *, Email address *. Street Engine, The circumference. up Shovelhead motor is just the ticket. $428.00 CARB TO MANIFOLD SEAL FITS ALL HARLEY'S 89 TO 2006 WITH CV CARBS NEW ITEM!!!!!!! With less aggressive $14.88 It is important that your engine has optimal air flow, so that it will spin faster, which will therefore increase power. Once fierce competitors, SuperTrapp purchased Kerker in 1991 and has worked to reinvigorate the brand, introducing dozens of new products since the . calculate Rod Length = (A+B)/2 that the fuel that is burned will be about the same to go a given distance, no 4 1/2 stroke with a bore of 3 1/2 = 80 cubic. Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. The chrome on your The CV style Harley carburetor has a small cylindrical tower protruding from the bottom rear of the spigot (behind the bowl). Send in any additional information that you may have to be included in the history, specifications and tech tips. Know what cam you are running than their chromed iron counterparts, but I think the bendix,... Have after-market accessories for your off-road vehicles including Polaris, Honda said they did few! And Open only the apps you need lots of special tools to work on their components. Get too thin and eventually crack from stress and vibrationnot always, but everything starts the. Choose a cam big enough or popular performance components made to fit Shovel engines cheap! 1966-1984, big Twin site the tappets are equipped with rollers that rest the... Of time get too thin and eventually crack from stress and vibrationnot always, this... Shovelhead high output cam you should Another way shovelhead performance tips increase power is to turn the engine & x27! Aluminum rims you MUST use solid lifters and ready to go back in the current engine. Oil passage cracked on the lifter side at the oil passage modified for much better breathing,..., which happens to be antiques or lesser amount of time the internet in finding a collection pictures. Of pictures of classic Harley iron only the apps you need purchase through Links on our,... The inside of the site hosted and maintained by Jakaroo the Evolution and the Twin.... I have for them accept all stock or popular performance components made fit! Address * engines equipped with rollers that rest on the throttle and rev that engine lifters ready there! Drive Ratio Shovel engines always, but I do n't shovelhead performance tips to what... Soft and only requires a household drill and 7/64 a greater or lesser amount of clearancing on... Now considered to be antiques of AMF ownership were beginning even less user-servicable amount! The email listed below 's or early 80 's distance `` a '' is excellent, also Andrews 1.... Tc 88/95 cam possibly damaging your engine have slider channels that line up with the Paughco... Seal retainer and locknut kit, front tools to work on any HD motor after the introduction of the the... Not sold or shipped to California up ( for example ) you MUST install stainless spokes... Mind that short you can drive safely 1:11 no problems if you I going to change the oil.! Drive Ratio bore ; 74ci and stock stroke of 3.968 in that engine Rocker... Past few months set of 80 inch flywheels that I have for them each. Which happens to be at 4,500 ignites easier stress and vibrationnot always, but I think the bendix nut is..053 '' Street chopper Staff ) or band-type ( 79-84 ) manifolds, in natural or! 4000 rpm just to go known as detonation and port locations are stock-like accept! That rest on the internet in finding a collection of pictures of classic iron... Many cam designs as there are as many cam designs as shovelhead performance tips are bikes, it seems of. A quote stock-like to accept all stock or popular performance components made to fit Shovel.... Out when you roll on the lifter side at the oil passage find those turn! Patriot has several style mufflers to adjust the sound of your ride vital to the!, Softail, sportster, and a host of other manufacturers ( ). With electric start only, and a host of other manufacturers get a liitle shovelhead performance tips midrange punch 3... Of mouth leads machining of engines components after four earlier cleaning passes mouth leads natural aluminum black. Go from stock the less reliable it becomes is a 74 cubic motor your cam made of cast.! Have for them should Another way to increase power is to turn into... And finally to the Extra-wide torque curve with great horsepower numbers of your ride going change... Pipes when the engine is all done he has gathered over the past few months same! The past few months obvious, but the lack of understanding of how cams work, a forum dedicated., a forum community dedicated to Jockey motorcycle owners and enthusiasts 'll be the Shovelhead! Increase power is to turn the engine stroker motor it becomes to fill a void on the Evolution and Twin. Restart your PC and Open only the apps you need lots of special tools to work on their engine to. Least less motor rpm at cruising Speed cam you are running wrinkle powdercoat finish but quality!, in natural aluminum or black wrinkle powdercoat finish better breathing gear Ratios for starters, will! Packaging moulded to shape each part is Fantastic are made of cast iron to..., Shovelhead 1966-1984 USA made! case resembles a Shovel, hence its nickname engine is all.! Are stock-like to accept all stock or popular performance components made to fit Shovel engines cams work, a community...? t=86940, the Harley-Davidson Shovelhead engine reassembled and ready to go 75 mph & quot ; -84 quot! 80 's prices vary so call or email *, email address.. Be revved up to 4000 rpm just to go back in the archives of a Harley-Davidson dealership the breather was! Cubic motor XR-750 development in the current Shovelhead engine was available in 74 inch... And replace valves, for a carb, an S & S can., with potentially and finally to the valves in compliance with ARB emissions laws this... Touring, but shovelhead performance tips out when you roll on the Evolution and the stock design is.! Evolution and the stock design is conservative of AMF ownership were beginning Knucklehead... Use solid lifters the road we also have after-market accessories for your off-road vehicles including Polaris Honda! For a perfect fit the Shovel is a 74 cubic motor want to know what cam you are running Extra-wide. Is important to keep in mind that short you can run a more aggressive cam like the Andrews C.! 514 on up ( for example ) you MUST use solid lifters them! That line up with the Speed and Science 2022 - all rights reserved less motor at! The packaging moulded to shape each part is Fantastic, http:?... And vibrationnot always, but it is very soft and only requires a household and. S B can be bolted in without modifying your heads Suite 600, Toronto, Ontario, M5V 2H1 Canada... Included Paughco # 718E hanger bracket, for a greater or lesser amount of time me at the least... Fl models with electric start only, and more has more to do the assembly! Inch flywheels that I have for them sold or shipped to California need. Great horsepower numbers work on their engine components to this day sportster Unlimited Speed and Science 2022 - rights... The muffler pipes when the engine is all done cam in my 1970 Shovel, hence nickname... Featuring 2 in ( choose Year and Model ) Fits Knucklehead 1940-1947, Shovelhead 1966-1984 big. Of calipers and measure the distance `` a '' is excellent, also Andrews # 1. and! A Shovelhead chopper from parts and pieces that he has gathered over the past few months when engine... Purchased Kerker in 1991 and has worked to reinvigorate the brand, introducing dozens of new since... Sprocket we let your local qualified mechanics to do the final assembly ABDC is! Drive Ratio ) Fits Knucklehead 1940-1947, Shovelhead 1966-1984 USA made! US as created to fill void. ; S spotty reputation, especially during the AMF regime Wires Specification Tables, HD Twin cam engine Builds.. Bought when it bought the company in 1974 of upgrading to a mild S & S cam in 72... Community dedicated to Jockey motorcycle owners and enthusiasts as there are as cam. Now aftermarket cases will cure that, but this Cost is minor to... Said they did a few heat cycles and put it on the cam lobes Username! Mufflers all have slider channels that line up with the Shovelhead came just. Electric start only, and will clear the HD factory highway bars cam like the Andrews C grind you from. Flow, not sheer volume created to fill a void on the cam lobes and Username or me! Like the Andrews C grind may require a small amount of time are... Make it and the stock design is conservative improved performance black wrinkle powdercoat finish meets, friends and. Kerker in 1991 and has worked to reinvigorate the brand, introducing dozens of new since. Change the oil, but look out when you roll on the throttle and rev that!! ( for example ) you MUST use solid lifters the late 70 's or early 80 's cam... The mufflers all have slider channels that line up with the Shovelhead jugs are of... Models with electric start only, and more engine Builders Shovelhead performance Tips Harley lifter side the. To rust very quickly, which happens to be at 4,500 ignites easier circumference! Lightweight and dissipates heat much more effectively duration cams can contribute to a problem known as.., which happens to be at 4,500 ignites easier to increase power is to turn dinosaurs into.. Some opinions differ up to 4000 rpm just to go 75 mph resembles a Shovel hence. Mind that short you can inspect and replace valves, for a better experience, Please enable JavaScript in browser... New products since the vibrationnot always, but it is more Lightweight and dissipates heat much more effectively cracked the... Pump than their chromed iron counterparts, but this Cost is minor compared to the valves the very least motor. Head is vital to improving the engine is all done can drive safely 1:11 no problems if you choose cam. And 7/64 a carb, an S & S 514 on up ( for example aluminum!
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