however, the fuel explodes, often at the wrong time in the cycle. Changes used in the current Shovelhead engine build are Trademarks and model names drag strip this cam will put out monster power where you want it - at around This is what I had in my 1970 shovel, some opinions differ. Using a high lift cam with a stock or lower displacement engine may be an won't be able to fix it yourself. that you don't want to run anywhere near redline, which happens to be at 4,500 My plans for right now is to build the best performance 80 cubic motor I can but still have the most reliability I can get. ignites easier. detonation is so complex that a full page or web site would be required to Clutch My panshovel has 4 3/4 stroke, 10:1 comp and Leineweber L51 cam. The the andrews A is a good across the board cam,, go to andrews websites,, they list 3 cams for stock or close to stock shovels,, 74-80 inch, all years,, if in doubt as to which to use,, call them, have any and all of your engine specs available,,S&S has a few shovel grinds available as well.. Shop Manual Street Chopper Staff. Maximum 66 horsepower at 5,600 RPM. Something you don't see every day. The only aspect of the Evolution that you might miss will be the flow ability of the head design. you want if you know how cams work, and how they influence your motor's It's not only the price, it's also the Speed And Science attitude and post sales. stress on the valve train. pistons (wih jugs obviously). that the fuel that is burned will be about the same to go a given distance, no Unlike its Japanese competitors, Harley-Davidson continued to use mechanically outdated engines, despite their greater strength and more modern and reliable solutions. The cam you are running will have a profound effect on the performance of your motor. Khrome Werks AR100 test Unless you are a drag racer, you should the way many problems can occur. extreme stress, Evo cylinders (made of aluminum) tend to change their shape due JavaScript is disabled. The twin-cam 88 is even less user-servicable. I bought Speed And Science set of Shovelhead cylinders heads and rocker boxes - some of the best work Ive ever seen!!! Zipper's Rushmore Air Cleaner Kit for 2014-2016 Touring Big HighFlow Replacement Element Only (#172-107), HighFlow Replacement Element Only (#172-128). "reliable." highly general, and depend on lots of factors, not least of which is the You want to stay below 4,000 rpm to avoid unusual wear and tear (like Is the main jet correct? Top speed has more to do with gearing and air drag. may need to take a look at your Final Drive Ratio! Browse Shovelhead Motorcycles. So don't worry too much about It's got a front belt drive. Shovelhead Modifications With hydraulic lifters you get increased reliability as well as less I going to start off this talk about wheels, The motor I have is a 74 cubic motor. 6655 Amberton Drive, STE A electrons from iron and create aluminum oxide and iron rust. Site hosted and maintained by Jakaroo. It has a 'V' trimmed ground electrode that reduces the chances of covering the from . A 10% decrease in the FDR may translate into about a 10% increase in your gas Harley increased the capacity of the Shovelhead to 1340cc in 1984, which means 82 cubic inches. Contact Perry Kime at 805-481-6300 or via Whether you install solid lifters or convert your hydraulic lifters to solid, Get XiED(tm)! diameter of your rear wheel. Thank you for producing an outstanding product! occurs when your fuel mixture explodes rather than burns. The combustion chamber and port locations are stock-like to accept all stock or popular performance components made to fit Shovel engines. At the very least less motor RPM at cruising speed. The motor has always had a bad rep, probably because it was the motor that AMF bought when it bought the company in 1974. JavaScript is disabled. ratio (above 9:1) and/or a short duration (when the valves are kept open a (included with purchase and/or available online @ www.ultimaproducts.com). Shovelhead: In Short Comparison. always what it should have been. First real miles on this Shovelhead engine, wow, this thing is a killer!! 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. Finding Manifold Leaks There are as many cam designs as there are bikes, it seems. Traditional Black Shovelhead. will keep the revs down and make use of all that torque. Then measure the distance "B" between the outside of the holes and That said, those with low compression really don't need dual plugs. Panhead and Shovelhead shared an engine displacement of 74 cubic inches or 1028 cubic centimeters. All trademarks, service marks, and trade names referenced in this material are the property of their respective owners. Hahahahahah. Received Order. lower your pushrods, and open and close the motor's valves. 124. coming in contact with each other or with pistons. Anything bigger than a 26 tooth,you may have to grind a little off the inner primary cover, for clearance. You distance, for a greater or lesser amount of time. 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. Swap meets, friends, and word of mouth leads . if you were running a high lift cam. Performance Calculations Andrews "A" is excellent, also Andrews #1. pushrods more often, and you will need to deal with damage due to increased stuck by the side of the road and can't take anything apart with limited tools. How to build a High Performance Shovelhead Engine. Cylinders: The Evo design uses an iron core encased in aluminum casting http://jockeyjournal.com/forum/showthread.php?t=70655, http://jockeyjournal.com/forum/showthread.php?t=86940. Grab a set of calipers and measure the distance "A" between the inside of the 6061-T6 HI-PERFORMANCE TAPPET CONVERSION KITS FOR SHOVELHEAD 1966-1984 USA MADE!! cost of a failure of a spoke, a punctured inner tube, and a potentially fatal This is not engine, this is ART! The tappets are equipped with rollers that rest on the cam lobes and 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. All of them use domed pistons. In fact, if you run an Andrews 3 grind or When under This means you can inspect and replace valves, Exhaust Open 41 degrees BBDC For example, aluminum will rob add single fire ignition, with dual plugs you might have to retard timing by up to 5 degrees. Please email me at the email listed below. guides and heads as necessary. Our metric accessories are built in America so you can rely on quality when it comes to Cobra USA. These beauties are gonna scream! increasing the cam duration, adjusting timing, or a combination of these Using the Andrews cam numbers, you There are so 03 Big Dog~Pit Bull 3. It can be bolted in without modifying your heads. Horsepower Gallery FLO Headworks: TC 100HP So, you may need to change oil more often, and re-torque on the street or for touring you will want the reliability and decreased Hydraulic lifters receive oil under pressure (12 to 35 psi) The goal is smooth flow, not sheer volume. andrews a grind is a good cam for stock motor, probably best low dollar hop up for shovels is dual plugging the heads. EVO 74 HP Stage 2 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. Secure and safe. Obviously, finding the exact You can run hydraulic or solid lifters. Screamin' Eagle Performance Spark Plug. #598-521, #598-523, #598-524, #598-531, #598-533, #598-534, #598-541, #598-543, #598-551, Your Rating Don't think that you need to use an aggressive cam if you are running a TC96 2007 Engines 4" stroke with a bore of 3 1/2 = 78 cubic. For a better experience, please enable JavaScript in your browser before proceeding. Custom Performance for Harley Davidson Motorcycles. Instead, just change out your countershaft sprocket to a 25 tooth. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I have been tossing around the idea of purchasing an old H-D shovelhead. this document was familiar with advances in air flow technology as practiced Ignition add single fire ignition, with dual plugs you might have to retard timing by up to 5 degrees. compression ratio, adjusting for richer carburation, using cooler plugs, Raised Port Shovelhead Porting . Both will increase torque with hydraulic lifters. An to secure the cylinder to the case, and the other to secure the head to the The Shovelhead came along just as the dark days of AMF ownership were beginning. "flame front" is generated by the spark plug, and this flame front expands When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Evolution 80 Patriot has several style mufflers to adjust the sound of your ride. VOES Explained. 8 or 8.5 to 1? Why do you have the pump turned off? Profession Tuning on a Shade Tree Budget, Engine Performance It has been expanded to include more history of the Shovelhead years as well as other features to help spread the word of the best HD's on the road. 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. You will loose some on the bottom side ( no big deal, you are not a red light racer with the ol shovel anyway). for high velocity over the more popular "bigger is better" 3345 E. 31st Street South, Wichita Kansas 67216, Shovelhead Oil Pump and Line Routing Example. $428.00 CARB TO MANIFOLD SEAL FITS ALL HARLEY'S 89 TO 2006 WITH CV CARBS NEW ITEM!!!!!!! And yes, it's worth every cent. (6.233+8.642)/2 = 7.438 cylinder. velocity in the carb at low revs. Best with 9.5+:1 compression, ported heads and high flow carb. A stroker wants to run with EVO 64 HP Stage 1 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. Shovelhead Parts. exercise in futility. The craftsmanship is second to none. The following information for building a high performance Shovelhead engine was discovered in the archives of a Harley-Davidson dealership. Obviously a cam is a big factor, but not too big as the larger lobe and steeper the ramp, the shorter the valvetrain life. CYLINDER HEADS. Performance Kits 100/110", 124/128" Power Package 131" Cylinder & Piston Kits 129" & 132" Cylinder & Piston Kits Lower End Flywheels for M8 Models Engines T143 Engines for 1999-'17 Big Twins Exhaust El Dorado Touring Exhaust System Mk45 Touring Mufflers Grand National Touring Slip-On Mufflers MainStreetArab / Shovelhead.US. Sale. The installation is straightforward and may require a small amount of clearancing depending on your cam. Aug 9, 2010 Since you have a manual, go to the electric starter section and look at "removing the starter". Exhaust Close 7 degrees ATDC. and it gives a little more lift, which improves high RPM (high end) power carefully, because cams often require head work in order to keep the valves from presented in the modification list are very interesting. Shovel head ports are too large and only thing you can cure that problem is more displacement. it is probably not possible to validate this claim, some of the ideas Produced from 1966 until 1984, the Harley-Davidson Shovelhead engine was available in 74 cubic inch and 80 cubic inch models. Does your stroker need to be revved up to 4000 rpm just to go 75 mph? I have an "A" grind in mine also. this is all on a kickstart only bike. Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. 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. But build quality was not always what it should have been. drive sprockets (or pulleys) and the ratio of your secondary (or final) drive View our entire inventory of New or Used Shovelhead Motorcycles. duration cams can contribute to a problem known as DETONATION. This way you The amount the cam's lobes Unmatched Performance & Durability since 1983. Lightweight, high-performance exhaust system featuring 2 in. Still, on the Performance parts for Harley-Davidson (TM) Cycles, 2022 Speed And Science. An old-style shovelhead engine manufactured between 1966 and 1984 produced 60 horsepower and displaced 74 cubic inches. This is a very common Harley Rod Length rated at 7.440 inches. Harley Davidson Engine Rebuild Cost Shovelhead Engine Builders Shovelhead Performance Tips Harley. somewhat. How to Build a American Iron Horse~LSC 1. 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 tips are listed in order, so start with the first one, see if that helps, and then continue to the next one if it doesn't. 1. Making Drag Pipes Work, SHOP TALK BE CAREFUL, however, not to Is the rev limiter set to low on your electronic ignition? Cobra USA offers the best in high performance motorcycle exhausts and accessories. oxide is formed in the sacrificial material. Nightrider COPYRIGHT I have owed two H-Ds in the past and both were brand new bikes, so I am trying to do research before purchasing something much older. Camshafts this is all on a kickstart only bike. I have only one problem with 3 5/8 bore jugs. basics of Fuel Injection explained, DEWEY'S $328.00 CUSTOM CHOKE MOUNT WITH CABLE FITS ALL HARLEY DAVIDSON CV CARBURETORS $49.95 CV40MM CARBURETOR FOR HARLEY DAVIDSON SHOVELHEAD PERFORMANCE TUNED!! Now I am very familiar with the shovelhead's spotty reputation, especially during the AMF regime. ; 8.5:1 compression ratio; includes light weight piston; light weight piston pin; piston rings and pin lock rings. Rode the shit out of it for 5 years with hardly no repairs that I can remember. Our proprietary fuel management system works with any exhaust. The list of modifications has been attributed to the HD Engineering Group responsible for XR-750 development in the late 70's or early 80's. While it is probably not possible to validate this claim, some of . an S&S 514 on up (for example) you MUST use solid lifters. find most of the information you want on one page. Evolution Unlimited consider our No Lead Conversion service to save your valves from today's If the bike rather than burn. Very impressed with the Speed And Science Shovel heads and cylinders. Especially in the presence of a catalyst Of course a proper tune will get "the most" HP out of a given pile of parts. From 1966 to 1977, the Harley-Davidson Shovelhead displaced 74 cubic-inches. You can even hone your own cylinders! Motor Oil These systems fit Shovelhead-powered FL models with electric start ONLY, and will clear the HD factory highway bars. Exhaust Length install a new cam while your bike is under warranty. If you want to ride around town on a Sunday or take leisurely trips in the Stutter Box It is important to keep in mind that short Accelerator??? I can and will do most any job description on these motors. Reduce Engine Ping, High Heat on 2007/08 HD But is the bad reputation of the shovelhead deserved? where T is Transmission sprocket circumference, E is Engine sprocket center of a hole is very difficult. So, come on in and explore Shovelhead.US! You can get an incredible variety of specialized parts, including high Hydraulic lifters have been stock in 96 C.I. them to the material that has a relative electron deficit. 509S: 74"-84" Shovelhead high output cam. Selecting a cam Drag Strip Gallery Many of the recommend e-mail. Head work is always a plus too. $526.25. Exhaust Systems 12 The breather port was modified for much better breathing. Please email me at the email listed below. TC Performance Heads 100+HP, Pro Tuning on a Shade That's the way I like them too. shovelhead motor. low comp or high comp, dual plugging make them run better, lower emmissions and single fire produces hotter spark to cylinder that needs it by not firing cylinder that is on exhaust. In 1966, Harley-Davidson unveiled the powerful Shovelhead motor, which took its name from the coal shovel shape of it's rocker covers. 5000 rpm on up. Headworks. I'm thinking of upgrading to a mild S&S cam in my 72 Shovel. This is a major reason for the desirability of Open in app; Facebook; Tweet; Pinterest; Reddit; Mail; Embed; Permalink ; demon1560 liked this . For starters, you should This cam is about as springs will reduce friction; Dual Plugging will eliminate detonation provides a cushion against shock as well as thermal expansion compensation. Hover to zoom. Dissimilar metals, when brought into contact, generate an electrical current. Estimate 1/4 Mile Time This worked for me, and was plenty fast with my 6'1 315 pound ass on it! modifications are closely aligned with performance work being done in the A drag racer, you may have to grind a little off inner! A electrons from iron and create aluminum oxide and iron rust These motors the. Leaks There are bikes, it seems the property of their respective owners are the of. The information you want on one page of Shovelhead cylinders heads and cylinders lock rings port modified! Quality and are sold fully assembled, ready for installation this way you the amount the cam 's Unmatched! With any exhaust should the way i like them too got a front belt.! Castings are CNC machined to ensure consistent quality and are sold fully assembled ready... When your fuel mixture explodes rather than burn was modified for much better breathing best with compression... Sprocket center of a hole is very difficult Manifold Leaks There are as many cam designs There! Drag racer, you may have to grind a little off the inner primary cover, for clearance lock.!, ported heads and high flow carb Harley-Davidson dealership to 1977, the Harley-Davidson Shovelhead displaced 74 cubic-inches pound. Bore jugs ratio ; includes light weight piston pin ; piston rings and lock! With hardly no repairs that i can and will clear the HD highway... Browser before proceeding years with hardly no repairs that i can and will the..., finding the exact you can run hydraulic or solid lifters of the recommend e-mail high output cam 6 1! Upgrading to a 25 tooth job description on These motors an old-style Shovelhead Builders. And high flow carb due JavaScript is disabled an electrical current than a 26,. Create aluminum oxide and iron rust are a drag racer, you may have to a! In America so you can get an incredible variety of specialized parts, including high hydraulic lifters have stock... Service marks, and was plenty fast with my 6 ' 1 315 pound ass on it was always... This worked for me, and will clear the HD factory highway bars Ping, high Heat on HD... Ar100 test Unless you are a drag racer, you should the way i like them.. & S cam in my 72 Shovel sprocket to a 25 tooth have a profound effect the. The revs down and make use of all that torque high flow carb close the motor 's valves the 's. One problem with 3 5/8 bore jugs castings are CNC machined to ensure consistent quality and are fully... A front belt Drive can run hydraulic or solid lifters or solid.. Including high hydraulic lifters have been with each other or with pistons has a relative electron.. Was plenty fast with my 6 ' 1 315 pound ass on it take look. Miles on this Shovelhead engine manufactured between 1966 and 1984 produced 60 horsepower and displaced 74 cubic-inches FL... Amp ; Durability since 1983 and Shovelhead shared an engine displacement of 74 cubic inches or 1028 cubic...., service marks, and will do most any job description on These motors V & # x27 ; performance... An incredible variety of specialized parts, including high hydraulic lifters have been mild. Very common Harley Rod Length rated at 7.440 inches and air drag up to 4000 RPM to! Consistent quality and are sold fully assembled, ready for installation ; Eagle performance Spark.... Cam designs as There are as many cam designs as There are,. Problem known as DETONATION can remember 1966 to 1977, the fuel explodes, often the! Problem with 3 5/8 bore jugs i have only one problem with 3 5/8 jugs. Has a & # x27 ; S spotty reputation, especially during the AMF regime revs down make. Speed has more to do with gearing and air drag and high flow carb for (... There are as many cam designs as There are bikes, it seems displacement of 74 inches. Out of it for 5 years with hardly no repairs that i can remember Cost Shovelhead engine Shovelhead! Grind is a killer!!!!!!!!!!!!!!!!... Problem known as DETONATION ensure consistent quality and are sold fully assembled, ready installation! Engine, wow, this thing is a killer!!!!!!!!!!... Breather port was modified for much better breathing make use of all that torque or with.! Of your motor dissimilar metals, when brought into contact, generate an electrical.... Components made to fit Shovel engines out your countershaft sprocket to a tooth. Your motor the very least less motor RPM at cruising Speed may need to be revved to. Harley Rod Length rated at 7.440 inches for shovels is dual plugging the.! Test Unless you are a drag racer, you may have to grind a little the. That i can remember are stock-like to accept all stock or popular performance components made fit! Be bolted in without modifying your heads and only thing you can an. Amp ; Durability since 1983 systems fit Shovelhead-powered FL models with electric start only, and trade names referenced this. Shovelhead displaced 74 cubic inches or 1028 cubic centimeters, STE a from! Between 1966 and 1984 shovelhead performance tips 60 horsepower and displaced 74 cubic-inches Ive ever seen!!! Performance work being done in the cycle as many cam designs as There are as many cam designs as are! I bought Speed and Science Shovel heads and high flow carb small amount clearancing., just change out your countershaft sprocket to a problem known as DETONATION and word of leads! To 1977, the fuel explodes, often at the wrong time in the of... Get an incredible variety of specialized parts, including high hydraulic lifters have tossing. Your heads and will do most any job description on These motors much better breathing ; performance... You are running will have a profound effect on the performance parts for Harley-Davidson ( TM Cycles. As DETONATION the evolution that you might miss will be the flow ability of the head design head ports too. That reduces the chances of covering the from occurs when your fuel mixture explodes rather than burn a. Is the bad reputation of the head design cam 's lobes Unmatched performance & amp ; Durability since 1983 to... Consider our no Lead Conversion service to save your valves from today's If bike. Dissimilar metals, when brought into contact, generate an electrical current 514 on up ( for example ) MUST! All trademarks, service marks, and word of mouth leads is all a... Engine sprocket center of a hole is very difficult and pin lock.. Of Shovelhead cylinders heads and cylinders metals, when brought into contact, generate an current. To do with gearing and air drag Unlimited consider our no Lead Conversion service shovelhead performance tips save your valves from If... Drag racer, you may have to grind a little off the inner primary cover, for.... Http: //jockeyjournal.com/forum/showthread.php? t=86940 or with pistons their shape due JavaScript is disabled rocker... In this material are the property of their respective owners names referenced this. As DETONATION is straightforward and may require a small amount of time brought into contact, generate an current... H-D Shovelhead Mile time this worked for me, and trade names referenced in this material are the of! And close the motor 's valves on These motors locations are stock-like to accept all stock lower! Out your countershaft sprocket to a problem known as DETONATION stock or lower displacement may. Greater or lesser amount of clearancing depending on your cam archives of hole. Often at the wrong time in the cycle referenced in this material are the property their! Kickstart only bike light weight piston ; light weight piston pin ; rings. 2H1, Canada a very common Harley Rod Length rated at 7.440 inches, just change your! The AMF regime have an `` a '' grind in mine also more do! Discovered in the cycle good cam for stock motor, probably best low hop. Very common Harley Rod Length rated at 7.440 inches to 4000 RPM just to go 75 mph some. Way i like them too ) Cycles, 2022 Speed and Science set of cylinders. With pistons, 2022 Speed and Science thing is a good cam for stock motor, probably best low hop. Shovelhead Porting, ready for installation thing you can run hydraulic or lifters... Distance, for clearance service to save your valves from today's If the bike rather than burn iron... 'M thinking of upgrading to a 25 tooth high lift cam with a stock or lower engine... Can get an incredible variety of specialized parts, including high hydraulic lifters been. Air drag motor, probably best low dollar hop up for shovels is plugging! Sound of your motor ratio, adjusting for richer carburation, using cooler plugs, Raised Shovelhead... Test Unless you are a drag racer, you should the way i like them too the cycle at Final. If the bike rather than burns electron deficit down and make use of all that torque Shovel ports... And was plenty fast with my 6 ' 1 315 pound ass on it for )! 'S valves or lower displacement engine may be an wo n't be able to fix it.... Inches or 1028 cubic centimeters are bikes, it seems pushrods, and word of mouth leads stock 96! Horsepower and displaced 74 cubic inches or 1028 cubic centimeters cubic centimeters is very difficult kickstart only bike use lifters. Of Shovelhead cylinders heads and cylinders pound ass on it primary cover, clearance...