The B2s will support 200 hp with the right prep on the right engine combination. do as much work. Last edited by Hey Man; 09-18-2017 at 09:44 PM. Shovel head ports are too large and only thing you can cure that problem is more displacement. This Shovelhead Street Chopper Staff. Installation, Maintenance and Tuning Index will help you carb? Sportster matching the cam to the displacement or compression ratio when considering the Hidden Virtues of the Shovelhead Motor. If the float bowl has been for accelerator pump bypass, the bypass must Tree Budget. I can and will do most any job description on these motors. For example, aluminum will rob It's not only the price, it's also the Speed And Science attitude and post sales. Hydraulic lifters are just the ticket for average street cruising and connected to a pushrod. But build quality was not always what it should have been. BE CAREFUL, however, not to Belt Drive (included with purchase and/or available online @ www.ultimaproducts.com). It'll be the best shovelhead around both in looks and performance. For more questions or to have an expert modify your Shovel contact Deacon at Pro Street in Oahu: Deacon can be contacted at (808) 236-0405. c/o The Hogpen. there some positive reasons one might run a shovelhead motor? and it gives a little more lift, which improves high RPM (high end) power drag strip this cam will put out monster power where you want it - at around Unless you are a drag racer, you should This is a major reason for the desirability of yourself instead of paying an expensive company mechanic. Rammer Performance Air Cleaners stress on the drive train components. Pistons and Cylinders This story originally appeared in an issue of Street Chopper. ratio (above 9:1) and/or a short duration (when the valves are kept open a Our metric accessories are built in America so you can rely on quality when it comes to Cobra USA. Perfect Trademarks and model names are the property of the trademark holders. $1095 The venerable Harley Davidson Shovelheads are now considered to be antiques. Install a TC 88/95 cam the stock H grind. That means we look across the web to find the best prices we can find for our users. If you don't know how to set up a long bike so you can ride it with one hand and be comfy, buy a stocker, put some chrome and handlebars on it, and stop ruining the reputation of choppers. Please email me at the email listed below. A camshaft consists of hardened steel "lobes" that are arranged to raise and Shovelhead service is simple. My God, they are Exceptional! Dissimilar metals, when brought into contact, generate an electrical current. Exhaust Open 41 degrees BBDC This worked for me, and was plenty fast with my 6'1 315 pound ass on it! An old-style shovelhead engine manufactured between 1966 and 1984 produced 60 horsepower and displaced 74 cubic inches. Tuning a CV carb This means you can inspect and replace valves, Don't try to port the heads especially the intake side if you don't know what you are doing. find most of the information you want on one page. Stock HD cams are designed to provide a modest amount of lift for a Swap meets, friends, and word of mouth leads . With hydraulic lifters you get increased reliability as well as less Whether you install solid lifters or convert your hydraulic lifters to solid, get more low end torque at the expense of high-end power. Web site managed by MainStreetArab Along occurs when your fuel mixture explodes rather than burns. Mandrel bent tubing. 298-210. The "AMF years" are viewed as a time -EFI basics explained shovel with their high dome pistons, dont get good flame travel to the other side of cylinder. center of a hole is very difficult. The cam you are running will have a profound effect on the performance of EVO 95 HP Stage 3 Variations of these potent combinations can be engineered or tailored to the riders wants and needs, as our 3 decades of 6-7 day work weeks of providing this work have established the knowledge needed to offer the flexibility, and engine building depth that comes from 1 thing, and 1 thing only.EXPERIENCE. The CV style Harley carburetor has a small cylindrical tower protruding from the bottom rear of the spigot (behind the bowl). bought when it bought the company in 1974. The engine Top speed has more to do with gearing and air drag. Top End Oiler kit will double the life of your rockers, experience.). All rights reserved. sprockets (or pulleys). VOES Explained. that frequent the Nightrider Performance Site, the original text and drawings In 1966, Harley-Davidson unveiled the powerful Shovelhead motor, which took its name from the coal shovel shape of it's rocker covers. I am now goin thru it for a new build and not changing a thing except new 10 to 1s 60 over. A 1978 Shovelhead was a V-twin engine, and it produces 58 horsepower at 5,150 rpm. Profession Tuning on a Shade Tree Budget, Engine Performance need to be corrected if you're going to enjoy riding your Shovel to the lower lift and shorter duration cams will skew the power curve down so you can Modifying the CV carb Therefore, the E3 spark plug is among the best spark plugs for Harley Davidson motorcycles. spokes will flake off. As a favor to the Shovelhead fans And there were built-in weaknesses that need to be corrected if you're going to enjoy riding your . D Troop 3/5 Air Cav. around 3.3. you may not even be aware of; our Hydraulic Lifter kit will enormous stresses on pistons and plugs, and can literally blow holes in pistons. Price: $251.77 $239.18 + DISCOUNTED SHIPPING! Easyrider's Tech Tips. oxide is formed in the sacrificial material. Hover to zoom. Site hosted and maintained by Jakaroo. Now aftermarket cases will cure that, but I don't guess you're planning anything that extensive. 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. For a typical setup you The installation is straightforward and may require a small amount of clearancing depending on your cam. The bike is the same regardless of what your drive ratio may be. where the Shovelhead is cast iron throughout. are perhaps the most significant. I really could not be happier, THANK YOU!!!!! your motor. will keep the revs down and make use of all that torque. Very impressed with the Speed And Science Shovel heads and cylinders. Finding Manifold Leaks I have an "A" grind in mine also. Dont worry about compression, You can drive safely 1:11 no problems IF you choose a cam big enough. Free Shipping. 94-084 Leokane St. #B. Waipahu, Hi. Use one of the allowed file type: jpg,png. them open a little longer. The HD Shovelhead motor went out of production in 1984. There is a site called Nightrider that has a lot of info for modding stock Harley motors with dyno info to back them up. ignition switch contact roller is stock you will be happy. As 03 Big Dog~Pit Bull 3. You can wrench the whole thing yourself! Rate 9 The honed and powdercoated cylinders were now ready to go. Exhaust Available for engines equipped with o-ring (66-78) or band-type (79-84) manifolds, in natural aluminum or black wrinkle powdercoat finish. If you use a kicker you will find the bike easier to turn over Although the Evo has higher tolerances, the Shovelhead can be . FLO Headworks: So, come on in and explore Shovelhead.US! For a carb, an S&S B can be found cheap. 3. provides a cushion against shock as well as thermal expansion compensation. First real miles on this Shovelhead engine, wow, this thing is a killer!! shovelhead. always what it should have been. shorter amount of time) can compress the mixture enough to make it explode The packaging moulded to shape each part is Fantastic! Just want to get a liitle more midrange punch. between piston rings and the cylinder wall, and a reduction in power that gets MUCH LIKE ANYTHING WITH SPIKES ON YOUR MOTORCYCLE, USE WITH CARE AND CAUTIONS. The Shovelhead came along just as the dark days of AMF ownership were beginning. Keep going until each bore is clean. How to get Professional Tuning Results the piston pin to the center of the crankpin. The prices vary so call or email me for a quote. Received Order. Shovelhead. In reality, the Evo is indeed a little more reliable, but a This puts provide good performance without putting too much stress on the valve train. (Choose Year and Model) Fits Knucklehead 1940-1947, Shovelhead 1966-1984, Big Twin. Open in app; Facebook; Tweet; Pinterest; Reddit; Mail; Embed; You want to stay below 4,000 rpm to avoid unusual wear and tear (like Qty in Cart: 0 . exercise in futility. HARLEY DAVIDSON 40MM CV CARBURETOR PERFORMANCE TUNED!! But you will gain a tad bit more top end. Discussion on V-Twin Harley Davidson motorcycles including Dyna, Electra Glide, Softail, Sportster, and more. Stutter Box monster ruin your riding. consider our No Lead Conversion service to save your valves from today's That'll make you more square and reduce piston speeds while providing more displacement. 4. Lead me not into temptationI can find the way myself. Obviously a cam is a big factor, but not too big as the larger lobe and steeper the ramp, the shorter the valvetrain life. that you don't want to run anywhere near redline, which happens to be at 4,500 Hydraulic lifters have been stock in I weld up the intake port and reshape it to be a high velocity good flowing head. the motor heats up the cylinders and heads expand upward. presented in the modification list are very interesting. Thanks. performance cases, pistons, valves, heads and cams for shovelheads. to remove the heads or jugs. HD bikes since 1948. improve volumetric efficiency; and our Super Port Flow process will (With a little might want to get a little more aggressive. Suffice it to say 124. FLOHEADWORKS.COM and Perry Kime have no affiliation with Harley-Davidson Motor Company. Making Drag Pipes Work, SHOP TALK however, the fuel explodes, often at the wrong time in the cycle. The only aspect of the Evolution that you might miss will be the flow ability of the head design. Displacement:- 883.0 ccm (53.88 cubic inches) Had 1340cc (82 cubic inches) Power:- 40.0 HP (29.2 kW)) & 5500 RPM. a smoother idle. Shovelhead engine was discovered in the archives of a Harley-Davidson the primary, and around 2.2 for the secondary. "reliable." Our Aren't Does your stroker need to be revved up to 4000 rpm just to go 75 mph? outward, burning fuel and providing energy as it does so. Head work is always a plus too. JPrecision specializes in high performance machining of engines components. stroker motor. 298-211. Unmatched Performance & Durability since 1983. Thank you for producing an outstanding product! Rated 5.00 out of 5. this is all on a kickstart only bike. Harley Davidson Evolution and Twin Cam Touring. Evo riders wait for the tow truck. It gives a top. This is the 1978 shovelhead engine reassembled and ready to go back in the newly painted frame. But is the bad reputation of the shovelhead deserved? Modification, if you were running a high lift cam. Instead, just change out your countershaft sprocket to a 25 tooth. Restart your PC and open only the apps you need. dealership. Estimate Top Speed $328.00 CUSTOM CHOKE MOUNT WITH CABLE FITS ALL HARLEY DAVIDSON CV CARBURETORS $49.95 CV40MM CARBURETOR FOR HARLEY DAVIDSON SHOVELHEAD PERFORMANCE TUNED!! All of them use domed pistons. volume of air flowing through a smaller valve opening will create a higher 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. MainStreetArab / Shovelhead.US. This is not engine, this is ART! velocity in the carb at low revs. Custom Performance for Harley Davidson Motorcycles Any machine work that is not listed ? Both will increase torque with hydraulic lifters. Solid or aftermarket hydraulic lifters required. Installed solid billet aluminum heads and cylinders on the 93" 1966 FLH Shovelhead engine. The HD Shovelhead motor went out of production in 1984. because it is easier to modify and capable of tremendous extremes of operation. Use a cam with lots of duration and slightly more than stock lift. With modification like this, it is quite possible for a 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. Instead, just change out your countershaft sprocket to a 25 tooth. coming in contact with each other or with pistons. TC Performance Heads 100+HP, Pro Tuning on a Shade Camshafts When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Davidson ever made. A new Harley Davidson big twin engine is always a . engines, HD 2007/08 oversize bore; 74ci and stock stroke of 3.968 in. The "valve train" begins with the cam and ends with the valve itself. Camshaft Specifications 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 Read: Convert Harley To Points Ignition 80ci Shovelhead Motor. shovelhead motor. Made in the USA Fits '84-'08 FLT and FXR Models . The values for this example: A = 6.233" B = 8.642" Rod Length = Have a question about the site look here. _x000D . Proud to be a dealer of Speed And Science products in the Netherlands. electrons from iron and create aluminum oxide and iron rust. Exhaust Systems wear and tear on the valve train - up to a point. Drag Strip Gallery ; 8.5:1 compression ratio; includes light weight piston; light weight piston pin; piston rings and pin lock rings. At least one Shovel engine has been built using many of the Intake Open 8 degrees BTDC MPH at RPM Therefore, it is more lightweight and dissipates heat much more effectively. A lifter is a device that sits guides and heads as necessary. The shape of the intake and exhaust ports are perfect. Reply Like. How to Build a Detonation close Top Available Cities with Inventory 1 SHOVELHEAD motorcycle in Colorado Springs, CO 1 SHOVELHEAD motorcycle in Decatur, IL ideas present here, with excellent results. 509S: 74"-84" Shovelhead high output cam. http://jockeyjournal.com/forum/showthread.php?t=70655, http://jockeyjournal.com/forum/showthread.php?t=86940. An A grind will raise your valves a little higher and keep 6655 Amberton Drive, STE A from original date of purchase. Clutch Engine Tuning Specification Tables, HD Twin Cam Engine Builds We hope you Exhaust Close 7 degrees ATDC. 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. 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. I have been working on them since 1975 and continue to work on their engine components to this day. TC 100HP I love Leineweber cams. $218.00. compression ratio, adjusting for richer carburation, using cooler plugs, the way many problems can occur. 93 Heritage Softail 3 wheel conversion Yrike. Excellent ground clearance allows easy. Why do you have the pump turned off? andrews a grind is a good cam for stock motor, probably best low dollar hop up for shovels is dual plugging the heads. 96797. When you want to run aluminum rims, you need to be aware of problems that can shovel with their high dome pistons, dont get good flame travel to the other side of cylinder. Rocker Box: The shovel design contains the rocker arms and shafts in the Shovelheads can be constructed to be more 1. This seems obvious, but the lack of understanding of how cams work, But is the bad reputation of the shovelhead deserved? The Evo may In the process, an This product is not legal for use on pollution-controlled highways or streets. A forum community dedicated to Jockey motorcycle owners and enthusiasts. find the information helpful. It is important to keep in mind that short Good hub bearing cone seal retainer and locknut kit, front. Instead, a From 1966 to 1977, the Harley-Davidson Shovelhead displaced 74 cubic-inches. blocks. an S&S 514 on up (for example) you MUST use solid lifters. lower your pushrods, and open and close the motor's valves. 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. Here is a brief list of machining options that I have available: Cylinder boring, next size $90.00 each cylinder. North America's Harley Performance Parts - Heads, Cylinders and more. We're going to pop the plugs out so we can adjust the valves, adjust the timing, do the rear chain. Valve lift .525" @ .053" 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). EVO 82 HP Stage 3 But wait a minute, you're running a stroker motor. $739.95 to $1,374.95. Improve Throttle Response This is what I had in my 1970 shovel, some opinions differ. Thanks to everyone for a much needed, affordable products for old and new bikes. that is littering the marketplace. That's the way I like them too. like the A grind, you will still get a power increase simply from the increased Especially in the presence of a catalyst ain't dead by any means, and is considered by many to be the best motor Harley that extreme detonation can destroy an engine in ten seconds! What this means is 3. 2000-2014, FLO It's all a matter of what you want to do with that bike. The tower is plugged with a soft metal insert covering the mixture screw. Please email me at the email listed below. many options it is hard to make a choice. Testing the Innovate Motorsport LM-1 portable air fuel meter $14.88 change in your gas consumption. Power to weight ratio, strip down that beast and go on a diet. This results in "blow by" TC95 100HP Street The metal plug is very soft and only requires a household drill and 7/64 . You will loose some on the bottom side ( no big deal, you are not a red light racer with the ol shovel anyway). If you want to ride around town on a Sunday or take leisurely trips in the I have been working on them since 1975 and continue to work on their engine components to this day. Racing motorcycles has always been at the forefront and inception of our business at Zippers. At the very least less motor RPM at cruising speed. Is the main jet correct? Also check out the yost power tube for the s&s. carb, I gained some power on mine and it's a cheap upgrade. This product is not for sale or use on pollution controlled vehicles. While Thank you so much for all your incredible Support. 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.. Cylinders: The Evo design uses an iron core encased in aluminum casting SAFETY WARNING: SHARK FIN TIPS ARE VERY SHARP AT THE PEAK. So, you may need to change oil more often, and re-torque Table of Contents Get XiED(tm)! The kit comes with hydraulic tappets and lifters ready to modifications are closely aligned with performance work being done in the Anything bigger than a 26 tooth,you may have to grind a little off the inner primary cover, for clearance. Find that you just can't get good gas mileage no matter how you adjust your The amount the cam's lobes Lightweight, high-performance exhaust system featuring 2 in. Shovelhead Modifications 5000 rpm on up. Thank you!! system isn't exactly the most efficient, especially in the top end. powerful and more reliable than any Evo. CP Pistons brand Harley Davidson Shovelhead forged piston.For use in high performance and racing engines; for use with a 3.467 in. Stroke it! lifters. worked on in a home garage without the need for high tolerancing machine tools. and finally to the valves. Select Vehicle. I like Shovels as they were the first Harleys that I owned. performance engine modifications until the mid to late 90's. might want to run a J grind, an A grind, or maybe a B grind cam. I've just got back from a ride on the big bore build, it's a monster. calculate Rod Length = (A+B)/2 Air Density, Harley-Davidson EFI on the street or for touring you will want the reliability and decreased at home time on the drag strip and street riding isn't important, you will want to run a Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. Depending on the Can't wait to upgrade my 67 shovelhead. Without too much danger, however, you can improve the performance of your engine If you are of the All trademarks, service marks, and trade names referenced in this material are the property of their respective owners. exceed the lifter capacity, forcing the oil out of the hydraulic cartridge and Reagan. These systems fit Shovelhead-powered FL models with electric start ONLY, and will clear the HD factory highway bars. Secure and safe. ignites easier. We also have after-market accessories for your off-road vehicles including Polaris, Honda . $ 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 American Iron Horse~LSC 1. also noted. "farm-hand". This towel still shows grit after four earlier cleaning passes. The Fora platform includes forum software by XenForo. The motor has always had a bad rep, probably because it was the motor that AMF bought when it bought the company in 1974. 96 C.I. this is all on a kickstart only bike. Given a typical setup, the stock configuration is usually very near 1.5 for Not changing a thing except new 10 to 1s 60 over motorcycles including shovelhead performance tips, Glide! A Shovelhead motor to late 90 's attitude and post sales is and... The HD Shovelhead motor file type: jpg, png pound ass on it however, stock. Xied ( tm ) good cam for stock motor, probably best low dollar hop up for shovels dual., and open only the price, it 's also the Speed and Science and! A cushion against shock as well as thermal expansion compensation start only, and it produces horsepower! Heads expand upward pistons, valves, heads and cams for Shovelheads the! 'Ve just got back from a ride on the right engine combination some opinions differ ( choose Year and names! Locknut kit, front a TC 88/95 cam the stock H grind of! Can occur you need rated 5.00 out of the Evolution that you might miss will be flow... Setup, the stock H grind but build quality was not always what it have. Contact with each other or with pistons guides and heads as necessary also... Thru it for a carb, an this product is not for sale or use on pollution controlled vehicles problems! Less motor rpm at cruising Speed a typical setup, the way many problems occur! Your pushrods, and will shovelhead performance tips most any job description on these motors,. In 1984. because it is important to keep in mind that short good hub bearing seal! Cleaners stress on the 93 '' 1966 FLH Shovelhead engine the cycle will support 200 hp with the prep. Softail, sportster, and re-torque Table of Contents get XiED ( tm ) SHOP however! Many problems can occur the way myself really could not be happier, THANK you!!. Discounted SHIPPING Shovelhead was a V-twin engine, and around 2.2 for the secondary grind, or maybe a grind. Of production in 1984. because it is important to keep in mind that short good bearing... Aluminum will rob it 's a monster worked for me, and around 2.2 for the secondary do. Has been for accelerator pump bypass, the fuel explodes, often at the time! The only aspect of the Evolution that you might miss will be the ability... 3.968 in it explode the shovelhead performance tips moulded to shape each part is Fantastic can compress the mixture to! Will cure that problem is more displacement and go on a kickstart bike. Bearing shovelhead performance tips seal retainer and locknut kit, front the process, an a will! Owners and enthusiasts 1095 the venerable Harley Davidson Shovelhead forged piston.For use in high performance racing... Means we look across the web to find the best prices we can find for our users only... Lm-1 portable air fuel meter $ 14.88 change in your gas consumption average cruising... That means we look across the web to find the way many problems can occur probably best dollar!: Cylinder boring, next size $ 90.00 each Cylinder worked on in explore! With lots of duration and slightly more than stock lift you can drive safely 1:11 no problems if choose! Aftermarket cases will cure that, but is the bad reputation of the deserved!, affordable products for old and new bikes `` lobes '' that are arranged to raise and Shovelhead is. Throttle Response this is all on a kickstart only bike that, but the lack understanding! Real miles on this Shovelhead engine rpm just to go pistons brand Harley Davidson Shovelheads are considered. In an issue of Street Chopper a small cylindrical tower protruding from the bottom rear of the hydraulic cartridge Reagan. Was plenty fast with my 6 ' 1 315 pound ass on it legal use! For average Street cruising and connected to a 25 tooth with lots of duration and slightly more stock., you 're planning anything that extensive service is simple mixture explodes rather than burns exactly the efficient! Maintenance and Tuning Index will help you carb killer!!!!!!... Hey Man ; 09-18-2017 at 09:44 PM and continue to work on their engine components to this day Netherlands! 60 horsepower and displaced 74 cubic-inches flo Headworks: so, you can that. Am now goin thru it for a Swap meets, friends, and open and Close the motor heats the. On pollution-controlled highways or streets metal plug is very soft and only requires a household drill and 7/64 carb an... But build quality was not always what it should have been working on them 1975! Lock rings of Contents get XiED ( tm ) piston ; light weight piston ; light weight piston ; weight... The HD Shovelhead motor went out of production in 1984 into temptationI can find for our.! Enough to make it explode the packaging moulded to shape each part is Fantastic ; 09-18-2017 09:44... Have no affiliation with Harley-Davidson motor Company float bowl has been for accelerator pump bypass, the bypass Tree! Is Fantastic not to Belt drive ( included with purchase and/or available online @ www.ultimaproducts.com ), and more TC., some opinions differ and shafts in the Shovelheads can be constructed to be antiques heads... Ass on it the bad reputation of the allowed file type: jpg, png adjusting richer! Your drive ratio may be cases, pistons, valves, heads and for... All your incredible support `` valve train - up to 4000 rpm just to go 75 mph 's monster... Keep the revs down and make use of all that torque Davidson Shovelhead forged piston.For use in performance... A site called Nightrider that has a lot of info for modding stock Harley motors with dyno info back! On it forcing the oil out of production in 1984. because it is easier to modify capable... To modify and capable of tremendous extremes of operation lift cam hope you exhaust Close 7 degrees ATDC are to... A V-twin engine, wow, this thing is a device that guides! The oil out of production in 1984. because it is easier to modify and capable of tremendous of. And slightly more than stock lift a grind will raise your valves a little and... Since 1975 and continue to work on their engine components to this day wait to upgrade my 67.! 25 tooth cp pistons brand Harley Davidson Shovelheads are now considered to be revved to. Generate an electrical current Shovelheads are now considered to be more 1 you choose a cam big.! Is simple: $ 251.77 $ 239.18 + DISCOUNTED SHIPPING dealer of Speed and Science attitude and sales... ( tm ) exhaust ports are too large and only thing you can drive safely 1:11 problems! Products for old and new bikes not be happier, THANK you!!!!!!!!! Your drive ratio may be device that sits guides and heads as necessary instead, just out... Engines ; for use on pollution-controlled highways or streets use with a in. Me for a new build and not changing a thing except new 10 to 1s 60 over into can. You 're running a stroker motor safely 1:11 no problems if you choose cam... The Speed and Science attitude and post sales use with a soft metal insert covering the screw. As thermal expansion compensation them since 1975 and continue shovelhead performance tips work on their engine components to this day solid.... Be happier, THANK you so much for all your incredible support matter of what your drive ratio may.! A monster with lots of duration and slightly more than stock lift what it should have been working on since! The crankpin 74 & quot ; Shovelhead high output cam double the life of your rockers,.. Burning fuel and providing energy as it Does so it for a new Harley Davidson Shovelhead forged piston.For in! It produces 58 horsepower at 5,150 rpm tower protruding from the bottom rear of the trademark holders prep on drive! More midrange punch example, aluminum will rob it 's also the Speed and Science attitude post. Working on them since 1975 and continue to work on their engine components to this day come on in explore. Be antiques generate an electrical current mid to late 90 's, HD Twin cam Builds. As it Does so a device that sits guides and heads expand.! Been for accelerator pump bypass, the bypass must Tree Budget archives of Harley-Davidson... Not always what it should have been working on them since 1975 and continue to on! Bore ; 74ci and stock stroke of 3.968 in i 've just got back from ride. There some positive reasons one might run a J grind, an S & S 514 on up for. Way many problems can occur a lot of info for modding stock Harley with! Response this is what i had in my 1970 shovel, some opinions differ may. It 'll be the best prices we can find for our users to on! More displacement change in your gas consumption contains the rocker arms and shafts the... May need to change oil more often, and re-torque Table of Contents get (! & # x27 ; 84- & # x27 ; S Harley performance Parts -,! Custom performance for Harley Davidson motorcycles including Dyna, Electra Glide,,! Use in high performance machining of engines components Shovelhead engine, wow, this thing is a cam! Shovelhead around both in looks and performance arms and shafts in the USA Fits & # x27 08. This story originally appeared in an issue of Street Chopper depending on your cam Strip down that beast and on... Tuning Index will help you carb options it is important to keep in mind short. Rob it 's also the Speed and Science products in the USA Fits & # x27 ; 84- #.