1 Piece Rear Main Seal Flywheel

5" Clutch 5. Kit includes: counterweighted crankshaft, 94mm machine piston and jugs, connecting rods, high volume oil pump, high lift cam, cam gear, cam bolts, engine gasket set, push rod tubes, push rods, high performance gland nut and washer, main bearings, rod bearings, cam bearings, high performance lifters, cam plug, rear main seal, and lightened flywheel. The hole in the center of the flywheel and the bolt pattern changed completely, but the clutch pattern stayed the same. CHEVY BIG BLOCK 454 MAIN 2-pc Rear Seal PART. 750 stroke, 1 piece rear main seal *1986-1999* Eagle 4340 steel H-Beam rods with 7/16" ARP 8740 rod bolts, 6. And the flywheel/flexplate that goes on the back is different as well. I need to replace my 168t Mercruiser Flywheel on my 5. Ring Gear Tooth Quantity: 65-tooth Rear Main Seal Style: 1986 and Later 1-piece Flywheel Material: Steel Weight: 4. A rear main seal leak can cause some big problems in your vehicle. com FREE DELIVERY possible on eligible purchases. 2 Remove the rear crankshaft seal (1) from the crank‑ shaft. That also depends on how the old one was glued in, some just won't come out in one piece, others that were poorly done, come out fairly easy. The engine does not include intake, flywheel, or water pump. The two piece main seal engines (85 and older) have a different flywheel bolt pattern than the one piece main seal engines (86 and newer). *Cough* Me back in the day*cough*. The crank style: One or two piece rear main seal. looks to be a one piece job. 2 Piece rear main seal. 4 Undo the screws (1) which hold the main bearing caps. If you have a 1 piece rear main seal (found on most new 351 motors) you will have to remove the transmission to replace the rear main seal. Due to revisions in the crankshaft design, a SP350/357 engine must have a counterweighted flywheel (or flexplate) for proper balance. I'd say a drop or two every time you shut her down is pretty normal. The old rear main seal I have learnt a couple of things over the years loctite between sleeve and crank. 7 to a newer 1 piece. If the flexplate bolts on, it is correct one balance wise. Oil leakage is prevented by a close fit between the crankshaft and the main bearing cap and a matching piece butting against it, this will be called the crescent, held to the block with three 1/4 inch cap screws. Just wondering how hard it is t do. FordPartsGiant. 0L marine engine (MerCruiser, OMC, etc) made from 1990-97, (commonly called a one-piece rear main seal or full seal), then this 12¾" flywheel is required. Internal Engine Parts. Have ordered all the seals/gaskets/and rear main seal. It's a dual mass for a 1 piece rear main seal. I've tried the Fel Pro rubber seal, a Ford rubber seal, and the Fel Pro teflon seal. FordPartsGiant. I bought a take out from a 1999 camaro and used just about everything from the flywheel back, but I already had a one piece rear main seal block. Later 283's,307-350 are all external balance if ya think about it. com offers the lowest price and fast delivery for genuine 1984 Ford Escort 4 Cyl 1. 600 cfm carb. 1 Quantity: Sold Individually WARNING: Cancer and Reproductive Harm- www. 7 260 HP 350 small block. Forward ring gear for bottom mount starter. If this is done the dampener and flexplate/flywheel then used are the more common nuetral balanced parts. motor is out and it is a one piece rear main. 7 pickup truck and I wanna know if my truck is a one piece or a two piece shaft or gasket or whichever it's called, because I'm doing the rear main seal on it. This alone classifies them as externally balanced according to the GMPP catalog. fits all one-piece rear main seal sbc engines that are external balanced, using a 153 tooth flywheel. 79111 Steel Flywheel (one piece crank shaft seal) - 4. I have to say that I didn't think to ask him to replace it but he is not your average Indy either. HQ Automotive Service & Parts. Pit Stop USAoffers J. Offset seal slightly above block base, other half slightly below opposite side. Most of the flywheel options are heavy at 30 lbs & all over $400. I took out the new rear main seal and removed all the flash from the edges. You CANNOT use a sneaky pete on a one piece seal. Most engines had a two piece rear main seal (Figure A), perimeter bolt valve covers (Figure B), and a 12. 5L 4cyl jeep. 1" rod journals. 1986 (commonly referred to as a two-piece rear main seal or split seal) and are replacing it with a. On the earlier engines, the flywheel may be listed for a 400 engine. These engines are externally balanced at the flywheel. (1 piece rear main seal) Click on image to see more detailed pictures. I am not sure what year nor what make or model it came out of, but I think the guy said the engine was made in 1978. Unfortunately, they're a one piece seal only accessed by the removal of the transmission. 0L marine engine (MerCruiser, OMC, etc) made from 1990-97, (commonly called a one-piece rear main seal or full seal), then this 12¾" flywheel is required. Team Camaro Tech > First Generation Camaro Info and Tech - 1967- 1969 "Where it all started" > Transmission & Driveline > M20 4 speed with one piece rear main seal. cranks for one-piece rear main seal engines. Grand National Driveline Bolts Flywheel Pro Series - V6/V8 w/1-piece rear main seal 7/16”-20 thread, 1. The late-style, one-piece rear-main-seal motor requires a different flywheel than earlier blocks that use two-piece rear main seals, both because of the late unit's reduced flywheel-to-crank. A3 B4 A4 G60/VR6 CLUTCH UPGRADE KIT $375 SHIPPED. Let us know what you think! Please use our Contact Us page for issues that require a more immediate response. Re: 1 piece or two piece rear sbc seal 05-01-05 01:57 PM - Post# 685462 In response to Stymie engine blocks have been redesigned to reduce oil leakage after 40 years. Later 283's,307-350 are all external balance if ya think about it. once youre there, pop it out, put the new on in it (OIL/GREASE THE LIP FIRST!), and put the trans back in. I have heard that you have to replace the flywheel when you switch the engine from a 2 piece to a 1 piece rear main seal. *Cough* Me back in the day*cough*. It goes around the crank with no breaks and you simply MUST have the flywheel off in order to remove it. Go to checkout ›› » Login » Register. existing 14" flywheel made before 1991 (commonly referred to as a two-piece rear main seal or split seal) and are replacing it with a 1990 and LATER 7. 0L Vortec 2001 C/K Truck, G-Van, Med Duty, C3500HD. yield strength to withstand thousands of cycles. Put a small drop of black rtv on the mating surface of the seal halves and torque the rear main down. How do u install the one piece rear seal in a 1987 chevy 350 small block, does the seal slide over the main to the - Answered by a verified Chevy Mechanic. SCIENCE FRICTION Billet Steel 168t Flywheel, 1-piece main seal zz454/zz502, 11" clutch, Mechanical Linkage. Changing your rear main isn't hard, just time consuming. On the British A Series engines, and some others, there is no positive crankshaft seal on the rear main bearing. Power Take Off for the 1987 and newer Small Block Chevy with the (one piece rear main seal) with a "Flex Plate" flywheel. I've tried the Fel Pro rubber seal, a Ford rubber seal, and the Fel Pro teflon seal. It can be removed or installed without removing the oil pan or the crankshaft. In the Suburu, you almost have to remove the engine. FordPartsGiant. We have had success with them in the past. Offset seal slightly above block base, other half slightly below opposite side. You CANNOT use a flywheel on a crank for a 2-piece rear seal and vice versa. Toll Free: 1. Superplates are manufactured from a material with a 90,000 lb. Small block V-8 Chevy engines, whether a two piece rear main seal or a one piece, begin leaking oil within minutes of being driven off the factory assembly line. Below is the BMW replacement seal after installation. Removed pistons, flywheel and timing gear 1 Unscrew the inner timing gear plate (1). Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. actual appearance may vary. Some 1982 1. The Rear Main Seal Replacement Thread to end all Others! In fact, I'd say about 50% actually leaked worse when I replaced it. Why couldn't this be drilled by a machine shop to work with my 2 piece seal crank? It's neutral balanced. Most of the flywheel options are heavy at 30 lbs & all over $400. Symptoms of failure are usually a wet area on the rear of the oil pan, an. Power Take Off for the 1987 and newer Small Block Chevy with the (one piece rear main seal) with a "Flex Plate" flywheel. 1 Quantity:. As simple as this is, it does a beautiful job and gets it done right the first time. VP use a one piece ring type seal and either the trans or the engine has to come out. The Ford Ranger 4-Cylinder Lima Motors Rear main seal changed from a two piece to a one piece design in 1986. They were produced until 1975. MoparPartsGiant. *Cough* Me back in the day*cough*. Remove the rear main seal from the engine block around the crankshaft. GM engineers redesigned the crankshafts used in production small-block V8 and V6/90-degree engines in 1986 to use a leak-resistant one-piece rear seal. Jeep Wrangler YJ 4L Rear Main Oil Seal: http:. 50 Years of Service in Crankshaft repair. Item Details Excellent shape! Freshwater Used part This is also part of the rear engine mount. 5" Clutch Flywheel, 1-piece main seal, 1986-up Vortec, ZZ3, ZZ4, ZZ383, Mechanical Linkage. FordPartsGiant. i now have a 350 1. Need a rear main seal in my 1984 F-150 302 automatic 2wheel drive. Introduction When the time came for me to replace the leaky rear main seal on my TJ, I searched online for a decent write up. Maybe it distorts a miniscule amount on later blocks with the one piece seal, doubtful it does on those with the larger crank flange. They were produced until 1975. Make sure you choose the correct flywheel for your application by reading our tech article. One Piece Rear Main Oil Seal 1940-1948 - 11/03/15 04:25 AM I will be posting a number of pictures of how I installed a One Piece modern oil seal in a 1940 Chevrolet 216 engine. A rear main seal leak can cause some big problems in your vehicle. Unique OEM flywheels are available via exclusive distributor agreements, such as in the Toyota Supra MKIV package (through Titan Motorsports) and the Lamborghini Gallardo flywheel available through Underground Racing. – Moab Mar 5 at 21:55. 00" bolt circle. 75 inch diameter flywheel until the end of 1985. 25" Clutch Unit. com offers the lowest price and fast delivery for genuine 1989 Ford Thunderbird 6 Cyl 3. 3/305/350) with a 1-piece rear main seal. I have never had a problem, others have said that if you set it too deep you will cover the oil. High temperature resistant material; Direct replacement one-piece crankshaft rear main seal for 351W from 7/11/83 - 1997; Use on Ford Performance 351W blocks manufactured after 6/1/93. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. My two piece has a driver's side dipstick. I am looking two buy a complete 350 gasket kit, and my question is this: Is there a difference between a 1 piece and 2 piece rear main seal? Will either. I have a 1 piece rear main seal in mine. One piece fits into a grove in the block and the second fits into the rear main bearing cap. ; Brand New Lightweight Ram 1986 & Up Small Block Chevy Stock-Type Clutch Flywheel (Part #RAM 1512-10). There are some threads about DIY clutch (or transmission, or rear seal replacement) jobs on this forum, try searching. In some cases, the seal may just pull out with a pair of needle-nosed pliers or tap out using a flat head screwdriver and hammer. With One Piece Rear Main Seal and. This change from a two-piece to a one-piece seal required a change in the bolt pattern on the crankshaft flywheel flange. Any vehicle with a rear main seal leaking, you must remove the transmission if the seal is one piece, goes in from the back. However we need the year, model and serial number. 1: The rear main seal should be installed using J-34924, or an equivalent installation tool-2. Bush, you may have the same exact problem. Thanks everyone for your help with this. actual appearance may vary. Both SFI rated for the track and non-rated for street applications. Its always been my understanding that only really old holden v8's used the neoprene type rear main seals, and every other later type uses a 2 piece rope rear main seal. I am in no way blaming Auto-Rx for this leak as I have heard 2 piece rear main seals are finicky. 14081761 has been released for service. As Race88 said you can go to any parts store and get a FLEXPLATE (a flywheel is what you bolt a clutch and pressure plate to) for a 350 1-piece rear main seal engine. Most rear main seal leaks are caused by a combination of normal wear in the crankshaft and seal and the drying, hardening and shrinking of the main seal. SCIENCE FRICTION Billet Steel 168t Flywheel, 1-piece main seal zz454/zz502, 11" clutch, Mechanical Linkage. You searched for all products. My GN is dry as a popcorn fart underneath. With 1" Inspection Bung to meet 2011 IMCA Rules. Pontiac ONE-PIECE Steel Reinforced Rubber Oil Pan Gasket / 1959-81 Pontiac Engines(including 301) Not recommended for use on Aftermarket (IAII) Blocks. A precision machined two-piece aluminum seal spacer that installs into the rear main bearing cap and into the block. 750 Safety Rating: SFI 29. 2) Remove rear main bearing cap and turn crank­ shaft so that a dowel hole can be. 3s with a one piece rear main. 8 engine install in 1992 1. I am on deployment in A-stan right now and am just trying to figure out if i have a 1 piece rear main seal or 2 piece. I just put a 2-piece lip seal in a 302 the other day. J-42849 Crankshaft Rear Main Seal Installer Alt ST-207 R This tool is not aluminum. I took out the new rear main seal and removed all the flash from the edges. Most ask if the serrations will shred their new TIP rear main seal and if the crankshaft needs polished. Take a picture of the crank flange looking at it from the rear of the engine. You may be talking about the rear main seal carrier, it's all one piece that has to be replaced by removing the transmission. Is it time to replace the pressure plate & clutch disc in your high-mileage vehicle? For about the same cost of resurfacing, get a JEGS Flywheel for Chevy, Ford, Chrysler, Jeep, and AMC applications. These engines are externally balanced at the flywheel. Only down side to using the 1 piece is it has to be done with the crankshaft out. This is technically the 2nd gen FC and earlier part, but they work fine for 3rd gen FDs (13B-REW) as well. 6L 5MT Crankshaft & Flywheel. A once piece is one complete circle without breaks. Remove the shifter boot, unbolt the stick from the. 00" bolt circle. Another solution is to use a non-weighted flywheel for a 550 with a separate bolt on weight. 8L Super 5MT Crankshaft & Flywheel. fits all one-piece rear main seal sbc engines that are external balanced, using a 153 tooth flywheel. Note: To do this maintenance on a 6. 4L (454 ci) engine (commonly called a one-piece rear main seal or full seal), then this 7. The one piece seal kit contains an installation tool, rear main seal, and an instruction sheet. Why couldn't this be drilled by a machine shop to work with my 2 piece seal crank? It's neutral balanced. It would depend on how bad it is leaking, how long I was expecting the engine to last, what else might need fixing, and how much of a headache I was expecting it to be. Rislone Rear Main Seal Concentrate is specificially designed to seal rear main seal leaks, but it also works better than a conventional stop leak on all other leaks, including timing cover seals, cam seals, rear main seal, o-rings and other. The 86 had a smaller diameter flywheel that wouldn't work with an 11 inch clutch. 750 stroke, 1 piece rear main seal *1986-1999* Eagle 4340 steel H-Beam rods with 7/16" ARP 8740 rod bolts, 6. Installing Speedi-Sleeve and Rear Main Seal on 1st Gen 6BT remove the flexplate (or flywheel): not ethat it does NOT come with a replacement for the piece of. It takes a special tool to install the seal, after you get the flywheel/flex plate removed AND the transmission out of the way (N. 558" main and 2. Flywheel to Crankshaft Bolts: 56 - 64 ft-lbs. A rear main seal leak can cause major issues to a vehicle and its transmission. The lower part of the seal may be replaced in the conventional manner when the bearing cap is removed. From 1980 to 1985, the engine had a starboard side dipstick on I/O engine. Part # BPP871006 Description BluePrint SFI Flexplates Features and Benefits: Ring Gear Tooth Quantity: 168 Rear Main Seal Style: SBC 1-piece Engine Balance: SBC External OEM 1-Piece Flexplate Material: Steel Safety Rating: SFI 29. This 14" Flywheel fits 4. Jefferson, WI 53549 920-674-6058. This led me to belive I installed it wrong. 0L engine, which is a better sealing system than the two-piece. If you are using studs, or ARP bolts, be sure to use their torque ratings. The old rear main seal I have learnt a couple of things over the years loctite between sleeve and crank. The porkchop shape on the rear of the crank is a balance weight. The new design seal is a reverse style as opposed to what has been used in the past. Chevrolet 305-350 One Piece Rear Main Internal Balance 153 Tooth. Coat the seal with a little oil and then slip the seal over the crank. These non-SFI rated Small Block Chevy flex plates are suggested whenever installing a new engine or transmission. by Michael Dickens The New Venture Gear 3500, a medium duty five-speed overdrive manual transmission manufactured by New Venture Gear, was used in General Motors and Dodge compact and full-size light trucks. Fixing the leaking seal entails dropping the exhaust, oil pan, main bearing support bar, and rear main bearing, and then replacing the two-piece seal. if you buy a new longblock, everything should bolt right up. you'll need remove the flywheel/flex-plate to change the seal. 3L V6 chevy engine with one piece rear oil seal, most V8 parts fit as the 4. I have a 383 stroker. They were produced until 1975. 0L LX Model (1 Piece Rear Seal)(1990 and up) Hydraulic Lifter, Gear Drive, LH Rotation valves oil pumps lifters camshafts gaskets bearings pistons rings. NOTE! Tape the crankshaft gear teeth to protect the bearing when the. Using the tool, install one seal section in the cap with the lip facing the front of the engine. harmonic balancer. Rear Main Seal 07-24-2019, 09:40 PM Once you have the flywheel off, pull the back plate and oil pan and remove the seal housing. ) If I'm not mistaken, isn’t the LT1 a standard 350 with a one-piece rear seal. The late-style, one-piece rear-main-seal motor requires a different flywheel than earlier blocks that use two-piece rear main seals, both because of the late unit's reduced flywheel-to-crank. Blazin is correct about the oil dipstick. Got away from that mess like 20 years ago. As for chevy flywheels on sbc and bbc. com FREE DELIVERY possible on eligible purchases. One piece seal, don't have to drop the crank. Hey all, Recently I did some extensive engine work to my 2006 Ram 3500 with the 5. Specifications: 1 Piece Rear Main Seal. I have never had a problem, others have said that if you set it too deep you will cover the oil. Replaces Mercruiser: 230-811562. 1 22G2237B: Gasket, flywheel housing to block 1 2 Transfer Gears: See "Transfer Gears" for details 3 13H2934: Oil Seal, Rear main 1 4 18G8086: Locktab set, flywheel housing, complete 1 5 HDWB2725: Bolt housing to block, long 3 6 HDWB2726: Bolt housing to block, short 3 7 22A0598: Back plate, standard 1. Externally balanced flywheel for GM 602, 603, and 604 crate engines only. How involved is it to replace the seal? I imagine I'll need to pull the transmission and flywheel to get to it. This engine has a two piece seal, and can't be changed without removing the oil pan. May not be legal in some racing series. Not easy but doable. Small block V-8 engines produced from 1958 through 1985 had a 3. This Base Engine Package includes: new engine block, heads and all internal components. How anyone can get a flywheel off (in one piece, at least) without separating the engine from the transmission borders on science fiction. There are special oil additives on the market that are designed to swell the rubber of the rear seal and cause it to expand, thus sealing off the leak. Any vehicle with a rear main seal leaking, you must remove the transmission if the seal is one piece, goes in from the back. Rislone Rear Main Seal Concentrate, distributed by Smits Group, is the solution you were looking for. Introduction When the time came for me to replace the leaky rear main seal on my TJ, I searched online for a decent write up. 000˝ Thread Size 7/16-20 Wrenching 5/8˝ JavaScript seems to be disabled in your browser. Only down side to using the 1 piece is it has to be done with the crankshaft out. 0L XJ Sport. Most engines had a two piece rear main seal (Figure A), perimeter bolt valve covers (Figure B), and a 12. Some gasket maker on outside of the oil seal(not a lot) Make sure it goes in square with the right tool! Half moon seal on the sump sometimes leaks and it looks like the rear main. 431") and the housing (2. FordPartsGiant. Our 351w 408ci Stroker Performance Short Block is designed for the customer looking for up to 800hp (main girdle and 4340 crank upgrades required; with cast crank and no girdle the max is 600hp). valve cover. Flywheel to Crankshaft Bolts: 56 - 64 ft-lbs. Rear Main Seal for all RX-7s. Hey all, Recently I did some extensive engine work to my 2006 Ram 3500 with the 5. Some of us with two piece rear main seal, went this route and never looked back. Thanks everyone for your help with this. The LS family of engines saw another change in design. 5" Clutch 7. 50 Years of Service in Crankshaft repair. In 1986, Chevy engines went from a two piece rear main seal to a one piece rear main seal. The new engine has a 1 piece rear main seal. LT1 T56 with muncie clutch bell housing and adapter to connect to trans. That would make everything from the flywheel back the same as an OEM 'Vette, and so it should be nice and quiet. I have read other posts about a small check ball back there? I am not familiar with that, and don't know if I have one to deal with or not. I have a 1991 Chev 1500 350 v8 w/Auto 4x4. These non-SFI rated Small Block Chevy flex plates are suggested whenever installing a new engine or transmission. You'll want an engine that has the same one piece or two piece rear main seal that your car has otherwise you've got to buy a new flywheel that will match up to the engine your getting (there not too expensive though at least for an automatic that is). Just wondering how hard it is t do. However, a one-piece rear main seal rear flange does not allow for the offset weight. Be sure to check out all of our products from Moroso Performance Products including Moroso Performance. The rear main oil seal in a 2. com offers the lowest price and fast delivery for genuine 1983 Ford Escort 4 Cyl 1. 1" rod journals. What would you do to improve our website? We're always looking for ways to improve JEGS. Includes: 200-2807 Flywheel Bolt Kit 130-2201 Pressure Plate Bolt Kit Fits 1987-Up Gen I Small Block Chevy Engines w/ 1 Piece Rear Main Seal Flywheel and flexplate bolts play an important role in the performance and safety of race and street cars. 7L Flywheel. Yes, because the 2 piece seal has to be installed with the rear main cap. 58" while the 1 piece is 3. Installing the flywheel, pilot bushing, clutch, and pressure plate on a 350 chevy small block for a 1966 Impala. What is the best way/method of chaning the rear main seal? (Oil leak between engine and tranny at bell housing) Anyone have a good link to a page that describes the process???. by Michael Dickens The New Venture Gear 3500, a medium duty five-speed overdrive manual transmission manufactured by New Venture Gear, was used in General Motors and Dodge compact and full-size light trucks. 7 260 HP 350 small block. Has anyone used a one piece rear crankshaft in a early block? Does the block or crank determine the seal? What will I have to use to run a 1 piece rear crank in a 2 piece block? I am needing a crank for a 70 302 and have a late model already available. Take a picture of the crank flange looking at it from the rear of the engine. One piece rear main seals/pan gaskets,centerbolt rocker covers with silicone gaskets are all improvements. Not for Top Mounted Starter. For this product we package flywheel part #460260 with McLeod's counterweight kit part #560222 to create an externally balanced flywheel for GM applications. You CANNOT use a sneaky pete on a one piece seal. 803611755 T-Piece, Rear Brake Fluid Distributor 111105245 Oil Seal, Flywheel; AL82N75 Alternator (14V/75 Amps) Transmission Main Shaft (22x40x1316) 113311113A. Crankshaft ID. 58" while the 1 piece is 3. Rated 330 hp. its a nuisance but not that big of a deal. I am looking two buy a complete 350 gasket kit, and my question is this: Is there a difference between a 1 piece and 2 piece rear main seal? Will either. 3-1 compression cylinder head, 1. The 86 and up one piece rear main seal SBC has a small weight on the flexplate or flywheel,but a round crankshaft end. be sure you need a 153 tooth flywheel for use on 1pc rear main seal (with weight) 31 lbs. v1 GM 181 - 1 Piece Rear Main Seal w/ Front Sump Oil Pan v2 GM 181 - 1 Piece Rear Main Seal w/ Rear Sump Oil Pan v3 GM 181 - 2 Piece Rear Main Seal. 3L V6 chevy engine with one piece rear oil seal, most V8 parts fit as the 4. This alone classifies them as externally balanced according to the GMPP catalog. This 153-tooth flexplate fits 1986-97 externally balanced S/B Chevys (such as 4. Shop Caterpillar 3406E Rear Structure Gasket Sets at Highway and Heavy (1) Crankshaft Seal Group (1) Flywheel Housing Gasket Caterpillar 3406B/E/C15 One Piece. Remove sed nut/bolt. I have used permatex ultra gray on corners of rear main cap seal area. Followed all the advice: removed pin in the cap from old rope seal and plugged it, put seal in properly offset ( so I thought), filed block to take edge off, sealant in all the correct places, a dab of sealant on the seal edges, torqued all bolts to specs. If you replace the one piece seal be sure to review the steps in the manual. In addition to that, your automobile technician will certainly likewise recommend you the most effective oil based upon the automobile and also the problems you drive in. Part # BPP300116 Description BluePrint Flywheels Features and Benefits: Ring Gear Tooth Quantity: 168 Rear Main Seal Style: 1-piece Engine Balance: External OEM 1-Piece Flexplate Material: Steel Safety Rating: None Quantity: Sold Individually Notes: Designed for use w/ 11in. How do i figure out what i have ?? i belive i have a late (1985+) block but am not sure. However, there have been signs that some late '85s had the '86 engine design in them. ) If I'm not mistaken, isn’t the LT1 a standard 350 with a one-piece rear seal. \ 12-13/16" O. What is the easiest most cost effective way to mount my T56 to my LS1 Preferably I would like to keep mechanical clutch. Ring Gear Tooth Quantity: 65-tooth Rear Main Seal Style: 1986 and Later 1-piece Flywheel Material: Steel Weight: 4. It requires a new crankshaft, harmonic balancer, and/or flywheel or flexplate. Brinn 73056 Transmission Small Block Chevy Steel Drive Flange, 1 Piece Brinn, Steel, 1-piece Rear Main Seal Style. I am wondering if after the rinse phase is over this leak will stop. Ford Racing Crate Engine, 5. 5 TNT and MX Can. I used the hydraulic clutch setup with a custom set of pedals. Does anyone know if the E3 crankshaft rear flange is compatible with the 1969 flywheel?. actual appearance may vary. 7L marine engine with an existing 12¾" flywheel made before1986 and LATER 5. summit chevy/ford flywheel bolts & lock washer set part sum-910207. The link for the flywheel makes no mention of balanced or non-balanced shaft. Once it starts to leak, it should be changed as soon as. Small block V-8 Chevy engines, whether a two piece rear main seal or a one piece, begin leaking oil within minutes of being driven off the factory assembly line. I've purchased a 1-piece rubber oil pan gasket and will install that tomorrow and return the RMS on Monday. If it as a rear main bearing seal leak, it would be dripping out the gravel guard under the flywheel. 5 lb, Steel, Tilton 5. This can result in oil seepage which may be misdiagnosed as coming from the oil pan or rear main bear-ing seal. If after all of that, if it is indeed the rear main seal I'd pull the engine. With an innovative open cover design that delivers maximum durability and the industry’s lowest moment of interia for a metallic clutch, the Optimum-V should be your only choice when you want peace of mind that you are racing with the latest in clutch. This 14" Flywheel fits 4. The rear main seal is behind the flywheel / Flexplate. to replace with an older late 70's chevy 350 small block which has been converted to marine. In the second half of the 1980’s – officially in 1986, Chevy converted small-blocks to a one-piece rear main seal which makes identifying these engines really easy. A small seal installation tool is usually included when a new seal is purchased.