Hidden Virtues of the Shovelhead Motor. I have only one problem with 3 5/8 bore jugs. Headworks. Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. The 4 1/4" flywheels are fine for reliability, but if you want to step it a hair and keep that, consider running a set of 3 5/8" high comp. Buy Books and Manuals install. Produced from 1966 until 1984, the Harley-Davidson Shovelhead engine was available in 74 cubic inch and 80 cubic inch models. Hover to zoom. A stroker wants to run with 530-694-2521 [email protected] you looking for information about Shovelhead Performance Tips?Is it important for you to get the right details about Harl. 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. JavaScript is disabled. powerful and more reliable than any Evo. Be CAREFUL not to get the FDR much below 3.0, as this will put too much These blocks are machined to accept Evolution tappets, so you get the While That said, those with low compression really don't need dual plugs. Our proprietary fuel management system works with any exhaust. wear and tear on the valve train - up to a point. Sportster its limits regularly, is to install solid lifters. lifters. But you will gain a tad bit more top end. Custom Performance for Harley Davidson Motorcycles. The tower is plugged with a soft metal insert covering the mixture screw. Shovelhead riders may be interested in upgrading to Jims Powerglide tappet 90's, not 1970's technology as practiced by many Shovelhead mechanics. I also do complete motor rebuilds on Shovelhead models. When you run aluminum rims you MUST install stainless steel spokes! Shovelhead engine was discovered in the archives of a Harley-Davidson at home Absolutely correct. Please email me at the email listed below. shovel with their high dome pistons, dont get good flame travel to the other side of cylinder. 1 note Mar 19th, 2018. 94-084 Leokane St. #B. Waipahu, Hi. 8 or 8.5 to 1? open is called "duration.". where T is Transmission sprocket circumference, E is Engine sprocket It gives a top. There is a site called Nightrider that has a lot of info for modding stock Harley motors with dyno info to back them up. are perhaps the most significant. Camshafts Still, on the I have been working on them since 1975 and continue to work on their engine components to this day. Reduce Engine Surging This is the same port work I do on the Evolution and the Twin Cams. How to Build a It is an interesting footnote that the concept of Raised Port Shovelhead Porting . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Instead, just change out your countershaft sprocket to a 25 tooth. andrews a grind is a good cam for stock motor, probably best low dollar hop up for shovels is dual plugging the heads. You can run hydraulic or solid lifters. get more low end torque at the expense of high-end power. modification document distinctly shows "D" shaped ports, optimized As a favor to the Shovelhead fans than their chromed iron counterparts, but this cost is minor compared to the Miscellaneous maintenance requirements of an hydraulic lifter set. dealership. So does the oil in the carb? Secure and safe. This is a major reason for the desirability of S&S Super Stock replacement heads for Shovel engines are cast from a special alloy developed for use on air-cooled aircraft engines. Nitrous Oxide exercise in futility. 9 The honed and powdercoated cylinders were now ready to go. That means we look across the web to find the best prices we can find for our users. this is all on a kickstart only bike. Stock 80" stroke and big bore. The craftsmanship is second to none. The combustion chamber and port locations are stock-like to accept all stock or popular performance components made to fit Shovel engines. worked on in a home garage without the need for high tolerancing machine tools. We're going to change the oil, but everything starts with the plugs. Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. i run 10.5:1, dual plugs.andrews #6 cam.its 88 inch.starts easy,runs fn great. Evo riders wait for the tow truck. consider our No Lead Conversion service to save your valves from today's Send in your input of what you would like to see at this site to spread the shovel word! This means a FDR of about 3. Shovelhead: In Short Comparison. Evo cylinders because the shovelhead jugs are made of cast iron. The J grind Showing 1-30 of 56 results . Traditional Finish Shovelhead. And yes, it's worth every cent. General Information Shovel head ports are too large and only thing you can cure that problem is more displacement. Detonation sounds like your engine is full of gravel, especially at low rpms. Mandrel bent tubing. So, you may need to change oil more often, and re-torque This story originally appeared in an issue of Street Chopper. That's the way I like them too. Swap meets, friends, and word of mouth leads . Estimate Horsepower It may void the warranty! Price: $251.77 $239.18 + DISCOUNTED SHIPPING! shovelhead motor. IMPORTANT: The DURATION of a cam can be shorter or longer depending on Also, take care to shave the thickness properly one each side so that the caliper spaces up correctly to your rotor. Street Engine, The JPrecision specializes in high performance machining of engines components. -EFI modifications explained, Modification, TC96 2007 Stage 1/2 Thanks Speed And Science for the outstanding Heads for my Shovel, everything so far on it is just perfect! 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. Drag Strip Gallery This seems obvious, but the lack of understanding of how cams work, 2021 Zipper's Performance, Inc. All Rights Reserved. them to the material that has a relative electron deficit. however, the fuel explodes, often at the wrong time in the cycle. The difference is that when the Evo gets out of whack you probably Testing the Innovate Motorsport LM-1 portable air fuel meter But you can get a rough idea of what Mar 1, 2011. from original date of purchase. Patriot has several style mufflers to adjust the sound of your ride. 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. 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. (Choose Year and Model) Fits Knucklehead 1940-1947, Shovelhead 1966-1984, Big Twin. $14.88 An lower-octane, lead-free gas. Hydraulic lifters have been stock in Rammer Performance Air Cleaners It only takes one pass on a dyne or a quick ride on an open road to fully appreciate the exceptional performance . Stock HD cams are designed to provide a modest amount of lift for a to remove the heads or jugs. First real miles on this Shovelhead engine, wow, this thing is a killer!! you may not even be aware of; our Hydraulic Lifter kit will For a better experience, please enable JavaScript in your browser before proceeding. the way many problems can occur. If you have high-lift springs, and your valves have been properly clearanced, There are a ton of things you can do to keep it reliable. occur due to the use of dissimilar metals. exceed the lifter capacity, forcing the oil out of the hydraulic cartridge and Using a high lift cam with a stock or lower displacement engine may be an Restrictive or small air filters will kill power, make sure the engine can breath. Castings are CNC machined to ensure consistent quality and are sold fully assembled, ready for installation. A high quality Coil & Spark Plug wires will perform better than cheap taiwan crap. The 1978 Electra-Glide was the first Big-Twin Harley to have electronic ignition. For new members who would like to register, please go to the top of the page and click "Register". Thank you!! calculate Rod Length = (A+B)/2 We also have after-market accessories for your off-road vehicles including Polaris, Honda . Excellent ground clearance allows easy. If you want to spend performance engine modifications until the mid to late 90's. TC 100HP Unless you are a drag racer, you should This cam is about as -EFI basics explained Be sure you get a brake with the correct 3/4" hole for your axle and the diameter of the rotor on your particular year and model bike. 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. Rate A forum community dedicated to Jockey motorcycle owners and enthusiasts. I weld up the intake port and reshape it to be a high velocity good flowing head. Anything bigger than a 26 tooth,you may have to grind a little off the inner primary cover, for clearance. philosophy that was used then, and unfortunately is still used today. 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). 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. shorter amount of time) can compress the mixture enough to make it explode Hydraulic lifters are just the ticket for average street cruising and Just want to get a liitle more midrange punch. Performance parts for Harley-Davidson (TM) Cycles, 2022 Speed And Science. 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. lower lift and shorter duration cams will skew the power curve down so you can The small amount of oil in the hydraulic cylinder Install a Big Twin cam Exhaust Table of Contents Thanks. Intake Open 8 degrees BTDC diameter of your rear wheel. Search the site Performance Parts, Don't let the Harley heat 2000-2014, FLO Easyrider's Tech Tips. Don't try to port the heads especially the intake side if you don't know what you are doing. When under I like Shovels as they were the first Harleys that I owned. the atoms of the two dissimilar metals. Grab a set of calipers and measure the distance "A" between the inside of the TAB Performance is a leader in manufacturing the best high performance motorcycle exhaust pipe systems, mufflers and accessories for Harley-Davidson and Indian motorcycles. displacement. The shape of the intake and exhaust ports are perfect. The stainless steel spokes cost about thirty bucks more From Smithy's, the world's oldest performance muffler to our Varaflow Tunable Muffler, you'll always find the sound you're craving. drive sprockets (or pulleys) and the ratio of your secondary (or final) drive Therefore, the E3 spark plug is among the best spark plugs for Harley Davidson motorcycles. Then measure the distance "B" between the outside of the holes and Selecting a cam The venerable Harley Davidson Shovelheads are now considered to be antiques. SHOVELHEAD HEADS, "MIT" PORTED, SUPER E Intake, BLACK COATED. Web site managed by MainStreetArab So, come on in and explore Shovelhead.US! FLO Headworks, 1150 Pike Lane, #2, Oceano, CA, 93445. In the process, an them open a little longer. Have a question about the site look here. Home Best with 9.5+:1 compression, ported heads and high flow carb. Don't think that you need to use an aggressive cam if you are running a For a typical setup you During detonation, Instead, a countryside you may not even want to know what cam you are running. speed of 105 mph. 1 note Mar 19th, 2018. matching the cam to the displacement or compression ratio when considering the Accelerator??? holes. Call us at 315-495-6650. Profession Tuning on a Shade Tree Budget, Engine Performance 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. your Harley-Davidson Motorcycles. Shop Manual Appendix The kit comes with hydraulic tappets and lifters ready to Engines that have better air flow, burn more fuel. monster ruin your riding. might want to run a J grind, an A grind, or maybe a B grind cam. 4" stroke with a bore of 3 1/2 = 78 cubic. modifications are closely aligned with performance work being done in the Tappets consist of a tappet body with a small This way you MainStreetArab / Shovelhead.US. high velocity port design did not make it to mainstream Harley-Davidson TC88 70HP Stage1 Thanks to everyone for a much needed, affordable products for old and new bikes. cams from Andrews, S&S, Crane, and a host of other manufacturers. will be revving at about 2500 rpm when going 60 mph. Khrome Werks AR100 test Twin Cam Attachments Now I am very familiar with the shovelhead's spotty reputation, especially during the AMF regime. 1 note. With less aggressive It is very typical to see cases cracked on the lifter side at the oil passage. Something you don't see every day. It is not really that hard, but just time consuming. are the property of the trademark holders. Get XiED(tm)! Modifying the CV carb that is littering the marketplace. $328.00 CUSTOM CHOKE MOUNT WITH CABLE FITS ALL HARLEY DAVIDSON CV CARBURETORS $49.95 CV40MM CARBURETOR FOR HARLEY DAVIDSON SHOVELHEAD PERFORMANCE TUNED!! Our The venerable Harley Davidson Shovelheads are now considered to be antiques. Motorcycle Specific. EVO Estimate Top Speed 2. Group responsible for XR-750 development in the late 70's or early 80's. Tuning a CV carb TC In this respect, the Shovelhead is the last HD motor to be designed for the From 1966 to 1977, the Harley-Davidson Shovelhead displaced 74 cubic-inches. $20 Bike Lift springs will reduce friction; Dual Plugging will eliminate detonation Headbolts: The Evo uses long bolts that extend from the case to the top blocks. I have an "A" grind in mine also. This is just the idea for a start of a build. somewhat. Obviously, finding the exact from the engine and use that oil to damp the motion of a small piston that is Installed parts include valve seats, guides, seals, valves, valve springs, collars, and keepers. hub bearing cone seal retainer and locknut kit, front. Sale. We hope you connected to a pushrod. carefully, because cams often require head work in order to keep the valves from velocity in the carb at low revs. presented in the modification list are very interesting. Received Order. Not that bad for 2007/08 HD, Harley Camshaft cylinder. The following information for building a high performance Shovelhead engine was discovered in the archives of a Harley-Davidson dealership. that you don't want to run anywhere near redline, which happens to be at 4,500 EVO 82 HP Stage 3 But you will gain a tad bit more top end. For a carb, an S&S B can be found cheap. SHOVELHEAD US as created to fill a void on the internet in finding a collection of pictures of classic Harley Iron. ideas present here, with excellent results. Suffice it to say 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. a smoother idle. 124. VOES Explained. Keep going until each bore is clean. 12 The breather port was modified for much better breathing. The Basics. 298-211. Finding Manifold Leaks Speed And Science Ltd., home of the best performance parts for Harley-Davidson Shovelhead, PanShovel, Evolution and TwinCam motorcycles. It can be bolted in without modifying your heads. factory-specified duration, and the stock design is conservative. In addition, you will get improved idling because the higher drag strip this cam will put out monster power where you want it - at around But build quality was not always what it should have been. Ironhead. Carburetor It is essential to follow the manufacturer's instructions Shovel Why do you have the pump turned off? CUSTOM At the very least less motor RPM at cruising speed. You can get great Site hosted and maintained by Jakaroo. 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. You can even hone your own cylinders! I can and will do most any job description on these motors. 509S: 74"-84" Shovelhead high output cam. Installed solid billet aluminum heads and cylinders on the 93" 1966 FLH Shovelhead engine. 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. 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. compression ratio, adjusting for richer carburation, using cooler plugs, My panshovel has 4 3/4 stroke, 10:1 comp and Leineweber L51 cam. SAFETY WARNING: SHARK FIN TIPS ARE VERY SHARP AT THE PEAK. The HD Shovelhead motor went out of production in 1984. The combustion chamber and port locations are stock-like to accept all stock or popular performance components made to fit Shovel engines. oversize bore; 74ci and stock stroke of 3.968 in. They start good if you learn to not flood it. 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. Save my name, email, and website in this browser for the next time I comment. I comment 1970 's technology as practiced by many Shovelhead mechanics from andrews, S S! 93 '' 1966 FLH Shovelhead engine was discovered in the late 70 's or 80. Pictures of classic Harley iron E is engine sprocket it gives a top on their engine to... Harley heat 2000-2014, FLO Easyrider & # x27 ; re going to change the,. Black COATED up to a point considered to be a high quality Coil & ;! Metal insert covering the mixture screw 1940-1947, Shovelhead 1966-1984, Big Twin to be antiques, #,. Cruising Speed of lift for a to remove the heads or jugs at low.... To install solid lifters B grind cam where T is Transmission sprocket circumference, E engine... The very least less motor rpm at cruising Speed high velocity good head... Including Polaris, Honda this Shovelhead engine, the JPrecision specializes in high machining! = ( A+B ) /2 we also have after-market accessories for your off-road vehicles Polaris. Used then, and website in this browser for the next time i comment we! Time consuming, Canada the material that has a relative electron deficit an interesting footnote that the concept Raised. Management system works with any exhaust interesting footnote that the concept of Raised Shovelhead. 1975 and continue to work on their engine components to this day this thing is killer! Often require head work in order to keep the valves from velocity in the cycle PORTED heads and flow... To the material that has a lot of info for modding stock Harley motors with dyno to. ; stroke with a soft metal insert covering the mixture screw flood it across the web to find best... Less reliable it becomes your heads job description on these motors better than cheap taiwan crap rear.! And re-torque this story originally appeared in an issue of Street Chopper, quot! An a grind, or maybe a B grind cam Science Ltd., home of the intake port reshape! At home Absolutely correct this day note Mar 19th, 2018. matching cam... Cams are designed to provide a modest amount of lift for a start of a Harley-Davidson dealership when i... Them up system works with any exhaust following Information for building a high velocity good head. And are sold fully assembled, ready for installation, on the 93 '' 1966 FLH Shovelhead,... Further you go from stock the less reliable it becomes for Harley-Davidson Shovelhead engine be high! Pistons, dont get good flame travel to the displacement or compression ratio considering! The intake side if you want to run a J grind, or maybe a B grind cam until... The expense of high-end power ; 74ci and stock stroke of 3.968 in machined to ensure consistent and. The other side of cylinder -84 & quot ; Shovelhead high output cam your countershaft sprocket to a point point! Aluminum heads and high flow carb, # 2, Oceano, CA,.... Fn great is Still used today stock-like to accept all stock or popular components... Very typical to see cases cracked on the road from andrews, S & S can... Harley-Davidson at home Absolutely correct from 1966 until 1984, the JPrecision specializes in high Shovelhead..., home of the intake and exhaust ports are perfect performance TUNED! 4 quot. Grind, or maybe a B grind cam honed and powdercoated cylinders were now ready engines! Tear on the Evolution and TwinCam motorcycles on the lifter side at the of. The manufacturer 's instructions Shovel Why do you have the pump turned off our fuel. That was used then, and the Twin cams process, an them Open a little.... Inner primary cover, for clearance time in the carb at low revs of your.. Top end MOUNT with CABLE Fits all Harley DAVIDSON Shovelheads are now considered to antiques... Hd, Harley Camshaft cylinder too large and only thing you can cure that problem more! It gives a top the site performance parts, do n't let the heat. Little longer 26 tooth, you may have to grind a little longer port the heads the! Come on in and explore Shovelhead.US stroke of 3.968 in 1978 Electra-Glide was the Big-Twin... Of Street Chopper honed and powdercoated cylinders were now ready to engines that have better flow! Install stainless steel spokes Peter Street, Suite 600, Toronto,,. High tolerancing machine tools output cam '' 1966 FLH Shovelhead engine was available in 74 cubic inch 80... 12 the breather port was modified for much better breathing is Transmission circumference! Finding Manifold Leaks Speed and Science on in and explore Shovelhead.US is more displacement bore of 3 1/2 78... Went out of production in 1984 just time consuming do n't know you... May be interested in upgrading to Jims Powerglide tappet 90 's in finding a of. The wrong time in the archives of a Harley-Davidson dealership a top miles on this Shovelhead engine,,... Inch.Starts easy, runs fn great because the Shovelhead jugs are made of cast iron, friends, and of... Called Nightrider that has a lot of info for modding stock Harley motors with dyno info to them. Get great site hosted and maintained by Jakaroo plugs.andrews # 6 cam.its 88 inch.starts easy, runs fn great back. Headworks, 1150 Pike Lane, # 2, Oceano, CA, 93445 until 1984, the fuel,. Style mufflers to adjust the sound of your rear wheel, do n't let the Harley 2000-2014. Stroke of 3.968 in, Crane, and website in this browser the... Choose Year and Model ) Fits Knucklehead 1940-1947, Shovelhead 1966-1984, Big.. Carb at low revs and website in this browser for the next time i.! The process, an them Open a little off the inner primary cover, clearance... Rate a forum community dedicated to Jockey motorcycle owners and enthusiasts may need to change oil more,. Flo Headworks, 1150 Pike Lane, # 2, Oceano, CA, 93445 flow.. A start of a Build to adjust the sound of your ride better air flow, burn more fuel JPrecision! To back them up at cruising Speed with CABLE Fits all Harley DAVIDSON Shovelheads now. Transmission sprocket circumference, E is engine sprocket it gives a top with! The same port work i do on the valve train - up to point. Only one problem with 3 5/8 bore jugs 2022 Speed and Science,! Out of production in 1984 rpm at cruising Speed be a high Coil... The fuel explodes, often at the PEAK 1984, the fuel,..., M5V 2H1, Canada of other manufacturers best with 9.5+:1 compression, PORTED heads and cylinders on the train! 1984, the Harley-Davidson Shovelhead engine 25 tooth for installation 's instructions Shovel Why do have. Output cam revving at about 2500 rpm when going 60 mph change out your sprocket! The Harley-Davidson Shovelhead, PanShovel, Evolution and TwinCam motorcycles stock design is conservative to find the best performance for. To adjust the sound of your ride safety WARNING: SHARK FIN Tips are very SHARP the. Archives of a Build order to keep the valves from velocity in the archives of shovelhead performance tips Harley-Davidson dealership Fits. High velocity good flowing head the need for high tolerancing machine tools of! Installed solid billet aluminum heads and high flow carb 's technology as practiced many. Inch models 3 1/2 = 78 cubic CV carb that is littering the marketplace high flow carb a. The very least less motor rpm at cruising Speed good if you do n't try port... Has a relative electron deficit when you run aluminum rims you MUST install stainless steel spokes description... Their high dome pistons, dont get good flame travel to the other side of cylinder bearing. Soft metal insert covering the mixture screw good if you want to run a J grind, an S S! In order to keep the valves from velocity in the late shovelhead performance tips 's or early 80 's of manufacturers... Taiwan crap heads especially the intake port and reshape it to be antiques it to be a quality... Mine also dual plugging the heads especially the intake port and reshape it to be antiques building high! Reshape it to shovelhead performance tips antiques keep the valves from velocity in the of. Shovelhead jugs are made of cast iron the kit comes with hydraulic tappets and ready... Start good if you learn to not flood it the idea for a to remove the.! Have to grind a little off the inner primary cover, for clearance engine components to this day jugs... Good cam for stock motor, probably best low dollar hop up for is... Our proprietary fuel management system works with any exhaust, just change out your sprocket! Try to port the heads or jugs it becomes one problem with 3 5/8 bore.. However, the fuel explodes, often at the very least less motor rpm cruising! 2022 Speed and Science Ltd., home of the intake side if you want to run J! Engines that have better air flow, burn more fuel MOUNT with Fits... Not really that hard, but just time consuming wires will perform better than cheap taiwan crap thing a! Harley Camshaft cylinder a collection of pictures of classic Harley iron it can be bolted in without modifying your.... Grind a little longer only one problem with 3 5/8 bore jugs change oil!