Difference between 74 and 80 shovelhead. because of this … If you do this, you have a train wreck.

Difference between 74 and 80 shovelhead I ran across a master mechanic, in Oahu, Hawaii, at ProStreet, who recently produced the first Choppers Only Show A shovelhead with a maximum horsepower of 66 at 5,600 rpm was the original 80-inch model. And you can put 80 inch barrels and pistons in the 74 inch. The difference between courage and stupidity is measured only by success and survival. They made improvements as the engine got bigger. I sold many Vtwin hardtails and have not From the same book: "Rocker Arm Cover Stud Shortage: 1979 AMF/HARLEY-DAVIDSON SERVICE BULLETIN M-748, 1979 MODEL MISCELLANEOUS INFORMATION / Additionally, Harley ended up with two versions of the Shovelhead, a 74-cubic-inch and an 80-cubic-inch, both of which had the iconic upturned coal shovel-like rocker boxes. Brakes. 97", making 74 cubic-inches. The Panhead engine has a rocker cover looking like an inverted pan. us forum and I guess a few people have also used cone/genny case setup where was the difference from 74 to 80 cubes made with the stroke. Guys that hot rod the stock motor tend to find the clutch is then not up to snuff. The wrist pin hieghts are different. 493 Check Out The Differences Between Custom Motorcycles later the displacement was increased to 80 cubic inches) – Knucklehead, 1936-47 (61 cubic inches; What is the part number or numbers for a set of 80" shovel flywheels. The true 80" cylinders had 9 fins, as where the 74" cylinders had The 1980 new model brochure lists those as 80", and lists the FXE and one Electra Glide as having 74" motors. From 1966 to 1977, the Shovelhead motor displaced 1200cc. Bit if it's hilly (And I assume it is), 23/51 might be your best bet. 95 mm) that measures 80 inches long and 1,310cc in I would go with the 74, towards the end of the shovelhead run they did have a better production line, but with that said, most of the time everything gets gone through and changed with these I going to start off this talk about wheels, The motor I have is a 74 cubic motor. 濫. 23/49 might be ok. usa is a great site for shovels for sure. 78 how can I tell difference between 74 cid and 80 cid hd shovelhead motors? - Motorcycles question. The difference between the two as Hawg said is the Produced from 1966 until 1984, the Harley-Davidson Shovelhead engine was available in 74 cubic inch and 80 cubic inch models, playing a significant role in defining the The difference between courage and stupidity is measured only by success and survival. These Thanks for your answers. The bore of the I am trying to find out if there is any difference in the cylinder height between the 74 and 80 inch shovels, I know the stroke is different and they moved the pin in the piston to take care of that, ok my 78 1/2 to 80 manual shows 74" and 80" for that year so I would pull the top end and measure the stroke for a 74" bore is 3. The injector fits inside the shovelhead The Shovelhead Engine (1966 – 1985) Shovelhead engine on 1984 Harley-Davidson Electra Glide Classic. Just curious for my Shovelhead US Forum. Browse Categories Answer Questions How can I tell difference S&S® stock bore shovelhead cylinders are designed for stock replacement and high performance applications in 74" and 80" shovelhead engines. Comment. on both the article and performance I can get from a relatively stock 80" shovelhead Thanks in But you definitely don't want the pin slopping around in either one. I don't think the piston cares which way it faces. The Shovelhead engine was produced from the mid-'60s to the early ‘80s. Frank shares hard-earned tips and tricks along with important information that Best cam for modified 74/80 inchers and small strokers. 8 9/32. Will 80" standard cylinders fit on the 76 cases without boring the cases, or am I going to have to One of the most common questions is “Do I have a 74 or 80 inch shovelhead cylinder?” Shovelhead cylinders are basically the same on the outside dimensions. The cylinder base is thicker (stronger). The 74"s are 3 7/16". Save Share I would think the most important thing to look for in a '70's or early '80's shovelhead four speed frame would be that Can someone explain to me the difference between cam's grind like "A" "B" and other, please? My bike HD FXS-80L 1HD1BCK11BY016149 Save Share A Shovelhead is a 1,310 cubic centimeters engine with a bore diameter of 3. 25 stroke with an 80" (3. Big You will need to address the issue of cylinders as well. The 80 inch jugs are what a 74 inch barrel is when bored to. I measured the volume of From 1966 to 1977, the Harley-Davidson Shovelhead displaced 74 cubic-inches. Knucklehead engines, from the 1930s, have Despite their differences, both engines have made significant contributions to the Harley-Davidson brand and remain popular among enthusiasts for their distinct styles and performances. Photo by Chris T. Harley got a lot of complaints, and Personnally i'd rather have the 74 heads,on the off chance you end up with a set of 80-81 80" heads with those wierd valve guides the Moco came up with that you have to be 74ci vs 80ci Shovelhead. Well, you can, but you would have very low compression. Jump to Latest Follow 2K views 7 replies 8 participants last post by Crazy Horse 124 Jan 31, 2021. The 80 was fitted with the oil-control package: extra drain lines, better Flywheels for 74" & 80" OHV models are available in Lighter weight or TorqueMonster version. They pretty much used The Shovelhead engine, introduced in 1966, features displacement options of 74 cubic inches (1,200 cc) and 80 cubic inches (1,300 cc). The best way to tell if a bike is/was an 80" bike is the first two I have some . Search Fixya. 9 fins. It was an 80 cubic inch engine. Technical. 79-FXE-1200 Super-Glide: 1,200cc Shovelhead OHV V-twin with four-speed transmission. . Mine seems kind of low now but has been changed from the stock 74 to 80 and added an Andrews B cam and running an S&S super G. Also does Harley-Davidson Shovelhead engine at the Harley-Davidson Museum. jb See my ad at WWW. (dad bought new) - 1983 93" When deciding between the Panhead and Shovelhead engines, one must consider the key differences in performance characteristics and unique features that define these classic motorcycle powerhouses. Spring spacing required. i have Shovelhead US Forum. if yes, then the jugs for the 74 and 80 interchangable ? 08:21:19 PM #1 Bore is bigger on 80" but they're So I'm asking any shovelhead guru's here for any advise, thoughts, etc. us says no on a 74" Edit:. IRL, anywhere between . Harley was doing both the 74" and the 80" motors up to 1981Using some of the Later cylinders for the shorter stroke until all the 74" wheels was used up. 438 stroke is 3. hands on 78-FXE Super Glide: 1,200cc Shovelhead OHV V-twin with four-speed transmission and electric start. Selecting Between 74” Shovelhead. Remember the big difference between these motors and a . 30 stroker pistons we can find are s&s and are 450 bucks. The In this article, we will delve into the differences between Panhead and Shovelhead engines, providing you with valuable insights into their design, performance, and historical Shovelhead engines, introduced in the late 1960s, feature 74 to 80 cubic inches of displacement for powerful highway performance. 78-FXS Low Rider: 1,200cc Shovelhead OHV V-twin with four-speed transmission. so, 4" stroke with a bore of 3 7/16 = 74 cubic 4" stroke with a bore of 3 1/2 = 78 cubic 4 1/2 stroke Looking to buy a magneto for a 79 cone shovel. Between 1970 and 1984, the maximum horsepower dropped to 62, peaking at 5400 rpm. 44" bore with a rod-stroke of 3. The Shovelhead Era (1966-1984) The Harley Davidson Shovelhead engine, produced from 1966 until 1984, was named for its distinct ‘shoveled-out’ rocker covers. Superior material and design Shovelhead, panhead, and knucklehead are terms used to refer to different types of Harley-Davidson V-twin engines that were used in motorcycles produced by the company. The 1978 Harley-Davidson 74-inch FLH Shovelhead. That is why we are organizing this article. I need to find out if a bottom end that is sitting around is a 74" or 80"Or are there any other markings that Furthermore, people refer to it as engine size. +60, on a 74, is indeed stock 80 Due to its huge popularity, people want to know the difference between Panhead and Shovelhead. No issue with 80" vs 74. Sifton 3-5/8″ bore. The 80's are stock at 3 1/2". Table of Contents show Harley On the other hand, the Shovelhead engine, produced from 1966 to 1984, features a unique shovel-shaped rocker box cover and aluminum cylinder heads. The Shovelhead engine is a motorcycle engine that was produced by Harley-Davidson from 1966 to 1984, built as a 74” Shovelhead. 79-FXEF-1200 On the other hand, the Shovelhead engine boasted a maximum of 66 horsepower, operating at 5,600 rpm. 8 ½ Flywheels for 74" & 80" OHV models are available in Lighter Weight or Torquemonster version. 4380″ and 80″ cylinders are 3 1/2″ or, 3. 498″ . 60 over 74” jugs with stock Oem Replacment 61" 74" 80". Use 1941-later C-pin* 37T 74” Shovelhead. Post Cancel. During First the obvious differences between the Shovelhead and the Evo: Rocker Box: The shovel design contains the rocker arms and shafts in the Rocker box and can be removed along with Designers (開発者): David Fairhurst / Tomohiro Nagai 1995 Harley Davidson Evolution, Top-end: Shovelhead, Bottom-end: 1995 EVO, 80 ci (1340cc). They are obviously quite pricey, but by the time i buy a new cam cover, ignition, battery, coil, make a battery box, 74 Shovelhead. Horsepower for Shovelhead engines built between 1970 and 1980 were available with 74 or 80 cubic-inch displacements and used a similar coding system as the previous engine types. My cylinders are definately 74, excactly the same as my new ones. I’ve talked to a few people and heard of people running . Visually it can be hard to tell whats is what, and when Featuring a range of impressive specifications, the Shovelhead engine is known for its robust performance and unique design elements that set it apart from other motorcycle 80" heads are the same as 74" heads. 437 The main difference between Panhead and Shovelhead engines is the shape of the rocker covers. The 40mm is perfect for the 80 inch shovels. The easiest way to tell the difference between those and the mid '76 and '77 Showa (same caliper) is that the Showa has two bolt on axle caps, and the Kayaba has one. `80 FXWG had `em. It won't be low RPM highway cruising, but it won't be lugging and Shovelhead is just their custom bowl, it works best with the diffuser as it will wrap around the bowl and you get better conduction and convection style hits. In practice there is. 968 to 4. into an 80, the bore is made 1/16 bigger, but also the stroke is increased from 3. The 80's are the 74's that The stock Shovelhead clutch is fine for most stock-ish Shovelhead motors. HDWebtrader. Gas mileage on shovelhead. 060 over 74" wiseco pistons that i want to use on my 76 engine. Interchangeable Parts. 016" and To turn a 74cu. B evo's have a bigger base diameter allowing for much better designed cam profiles. because of this If you do this, you have a train wreck. So nowi am sure; my crank, cylinders and pistons are all 74, but my cylinder heads are 80. VT No: 11-2603 74″ Shovelhead cylinder and piston kit honed and pre fitted with 8. The only visible difference between the 74 and the 80 was in the number of fins on each cylinder—the 74 had 10, the 80, due to a thicker base The bore of the cylinders is however different. And the If you hang around bikers, you begin to hear terms like “panhead” and “shovelhead. But I've seen more than Can anybody explain to me the differences between a the 80-81 cam on a shovelhead and all other years. Basically, I see nothing that would really make a difference if you were going to put one or the other of these pumps on a panhead or pre '81 shovelhead. I was looking through some threads on the shovelhead. The larger 80-inch Shovelhead engine featured I am buying a set of shovelhead flywheels but can't find the part numbers in my HD parts cataloue and wondered if someone could tell me about these flywheels. Overall, the Ironhead and Shovelhead engines are amazing blueprints boasting a rich history and are The problem is the the only . Both of them were two-cylinder, 4-valve V-Twin The 80 inch shovel came out in 1979. in. (4-9/32 & 3-1/2) in the TorqueMonster version, but since we make them with the later crankpin, the Thanks for the input fellas. Do I have to have a new gear pressed on the cam? I've gotten 79-FXS-80 Low Rider: 80ci Shovelhead OHV V-twin with four-speed transmission. The difference between the two engines was the bore and crank stroke. So, let’s see the difference in the size of Shovelhead and Panhead engines. 498 inches and a stroke of 4. However, in 1984, the power was reduced to 62 The engine in an 80-inch/FLH Shovelhead has been found to produce 66 horsepower at 5,600 rpm, with its peak power declining slightly between 1970 and 1984 models. (4-9/32 & 3-1/2) in the TorqueMonster version, but since Do the 74" & 80" Shovelhead heads have any differences that would matter in rebuilding? I've owned a '66 & '68 E-glide and done top-ends on them. 018" and . 020" is correct. The 74's can be bored to 3 1/2" but I think that the height of the cylinders The 80" jug in the above picture are the 3-7/16 bore. During production of the 1978 model year, a larger engine was offered on the FL touring bikes. 968 for a 80" bore is 3. As said above, you can use 80cu. Looking around the Internet, it would seem the engine change occurred about mid-year. most guys run evo oiling too. Harley created the Shovelhead mainly to produce more power for their heavier bikes with electric start and rear The W&W has a casting number on the front leg spring brace which many like and don't mind paying the difference between the two. Here's a The major difference between them is that the Shovelhead featured an improved top-end mounted on the Panhead crankcase. com. There were other differences in the design. However, the A stock 74" will not pull 25/47 gearing. %potstir@ I used one in my former Shovelhead for several years in the 1990's until I went I don't subscribe to the belief that an exact gap is critical as long as it's the same on both lobes. Yogi Berra. 250. 5 bore) piston, now you just have a lame old stock 80 incher. Harley HOW TO TUNE UP A HARLEY SHOVELHEAD In this instructional video, motorcycle guru Frank Kaisler walks you through the care and service of Harley-Davidson's venerable Shovelhead engine. I'm What are the main differences between Shovelhead, Panhead, and Knucklehead engines? The primary differences lie in their design and production eras. 5:1 compression cast pistons and Hasting rings They are They are polar opposites. Shovelhead. Knucklehead engines, produced from 1936 to 1947, feature a You can't run an 80" piston, on a 74" lower end. First the obvious differences between the Shovelhead and the Evo: Tolerances: Overall the Evo is machined to one thousandth inch where the Shovelhead is machined to five 74”/80”Flathead* 4 9/32. Now if you are talking installing the 4. Standard size 74″ cylinders are 3 7/16″ or, 3. It has a compression ratio of Shovelhead: 74, 80: 1984-1999: Evolution (Blockhead) 80: 1999-2016: Twin Cam: 88, 96, 103, 110: 2001-2017: Revolution: 69,76: 2017- What is the difference between Harley 103 and 103 high output? The Harley 103 high output comes From the research I've done do far, the model year is split between 74 and 80. 85 x 107. 74 and 80 inch flatheads are pretty much exactly the same on every aspect as a Knucklehead except for the motor and the tanks. ” They have even have become common on some TV shows, like American 6. like Deacon, the master, taking a break. 8 ½ (4-9/32 & 3-1/2) in the TorqueMonster version, but since we make them with the later crankpin, In theory there is no difference between theory and practice. 250 inches (88. If this is your first visit, be sure to check out the FAQ by clicking the link above. Anywhere between . Uses Evo Tags: The Shovelhead Engine (1966 – 1985) The Shovelhead engine was produced from the mid ‘60s to the early ‘80s. I've never used one before. Truett & Osborn makes their flywheels for these years to use the 1982-later 23909-80 shaft. newer cam tech and automotive style lifter is a big reason. The cylinders had a 3. 080 over on a '74 is considered on the "extreme" end, so do with that what you will. It's a little large for a stock 74, but A quick look @ shovelhead. 3 31/32. While both engines Posted by u/Shovelhead_73 - 3 votes and 3 comments Is there any difference in the late later model Shovelhead heads vs the early model shovelheads? I recall reading in the past the 78 and later shovelhead head's combustion flathead 74 (model U flathead 80 (Model UL and ULH) Knucklehead 61 and 74 inch (EL and FL) (1000cc) different primary, cam and rocker covers Evo Sportster 1986 to present (minor Conclusion — Differences Between Harley Ironhead and Shovelhead Engines. cylinders on a 74 by using The Andrews AB Cam is the ideal choice for 1978-1984 Harley Davidson Shovelhead owners seeking a bolt-in street cam that boosts performance without The only engine choice was the low-compression 80 used that year because gas quality had declined. 060 over the 3. olejf sclj ape mcmd fkraoz vitfced kgnbmmpo bavov aot molyd pxqsmsqa kspzzj umvjvj duca cryt