Use the Fel-Pro one piece gasket that matches your oil pan and don't overtighten the pan bolts. 350 Bare Block (1986 – Later Style), 1-Piece Rear Main Seal • Cast-iron 4-bolt block • 4.000" bore • Machined for hydraulic roller or … Part Number: FEL-17725 rear main seal. Small Block Chevy - How to Choose a Flexplate. From 1980 to 1985, the engine had a starboard side dipstick on I/O engine. What's the right way to get the seal onto the crank without messing up the seal? Warranty. Items 1-30 of 41. $17.99 ... Discount prices on quality New & Reconditioned Automotive Replacement Part. The one thing that throws a big, fat monkey wrench into the works is a design change to the rear main oil seal that Chevrolet's engineers made in '86 model year engines. The change was made in the mid-80's. • Standard 350 main journal sizes • Non-siamese bores • Production-spec cylinder wall thickness • Lifter valleys machined for hydraulic-roller and flat-tappet valvetrains. It was possible to replace a 2-piece rear main seal by removing the oil pan while the engine is still in the vehicle, but not with a one-piece rear main seal. This is thanks to a unique one-piece design that eliminates the typical two-piece rear main seal … It was possible to replace a 2-piece rear main seal by removing the oil pan while the engine is still in the vehicle, but not with a one-piece rear main seal. The rear main seal is leaking. This 153-tooth flexplate fits 1986-97 externally balanced S/B Chevys (such as 4.3/305/350) with a 1-piece rear main seal. Good luck doing this job with the engine still in the vehicle. BS11829-1 (fits 1959-1985) And a Oil pan gasket kit --- your choice -- one piece or a 4 piece cork whatever -- your preference. Put a small drop of black rtv on the mating surface of the seal halves and torque the rear main down. Rear main seal is what keep oil from leaking out around the crank. 3 - a little gasket sealant on the rearmain caps works wonders 4 - get the felpro one piece oil pan gasket Get the felpro seal and oil pan gasket, dont try and cheap out you will just replace the damn thing again. OEM Chevy Chevrolet GMC 350 305 5.0L 5.7L 4.3L One Piece Rear Main Seal Housing. but it will take some time. Our large inventory and huge warehouses allow us to offer some of the best prices around. Pierce the end of the seal about 1/4" from the end with an ice pick, and thread a piece of solid copper wire about 1/16" in diameter and about 18" long through the hole. Raise the car with the help of a jack so that it becomes easy to reach the rear main seal. ***, © 2021 Web Design and Ecommerce Solutions by IPSSolutions.com, LLC, Free Shipping for Engines & Transmissions*, 350 Bare Block (1986 Later Style), 1-Piece Rear main Seal. Our 350 Chevrolet small-block is a nice late-model four-bolt main truck block. Yes you can replace a 2 piece rear main seal on a SBC without pulling the crank, by just removing the pan and the rear cap. Pre-Owned. - No, 1985 and newer use 1-piece rear main seal and the oil pan (sump) is different at rear main seal. Find CHEVROLET 5.7L/350 Chevy small block Gen I Rear Main Seals 1-piece Rear Main Seal Style and get Free Shipping on Orders Over $99 at Summit Racing! As the crankshaft turns this seal rides against the seal hub which is designed to be smooth as too not damage the seal lip which is made of rubber. Hold the new rear main seal up to where it mounts. I tried searching for this on a few sites and just couldn't … Each cylinder block is machined to production-spec tolerances and is manufactured to the exact specifications of pre-1986 or 1986-later engines. I have a GMC with a 350CI small block Chevy engine. on the inner and 35lbs on the outer with oil. I already have the seal installed into the housing. The most labor-intensive seal to replace on any engine is the rear main seal. The 2 pc. This is 168-tooth flexplate for 1986-97 externally balanced S/B Chevys (such as 305/350) with a 1-piece rear main seal. Apply RTV silicone to the cap's mating surfaces, then install the lower rear man bearing half to the engine, ensuring that the RTV doesn't get onto the seal's mating line. These non-SFI rated Small Block Chevy flex plates are suggested whenever installing a new engine or transmission. Buy GM Parts 12554312 Rear Main Housing Seal for Small Block Chevy: Extension Housing - Amazon.com FREE DELIVERY possible on eligible purchases We are using a Fel-Pro rear main seal designed for the earlier application. Make sure you choose the correct flywheel for your application by reading our tech article. If you didn't recieve one, they can also be purchased separately at most auto parts stores or you can make one from an old feeler gauge or a piece of brass shim stock. Offering as much as 50-percent reduced friction as compared to other rear main seals, GTS’s TFE Lined Seals (PLS) have been proven effective and reliable time and again in both racing and street applications. - Yes, as long as the depth of the oil pan (sump) is the same and the length of the sump front to rear is … Flywheel, Billet Steel, 168-Tooth, External Engine Balance, 25.000 lbs., 1-Piece Rear Main Seal, SFI 1.1, Chevy, V8, Each. Good luck doing this job with the engine still in the vehicle. Crankshaft Front Seal Installer 303-1259 and Rear Main Seal Installer Tool 303-770 Fit for Ford 4.5L, 6.0L & 6.4L Powerstroke F-250/350/450/550 4.3 out of 5 stars 3 $258.99 $ 258 . Single bolt pattern.\\ 12-13/16" O.D. Chevy 305 Engine Rear Main Seal Replacement. 1987 and up has a one piece rear main seal. A once piece is one complete circle without breaks. When I asked the "motor heads" there was no unamomous agreement as to a particular type. Tap the crankshaft forward and rearward, using the lead hammer, to line up the thrust surfaces. You will be able to see the back of the crankshaft. This 153-tooth flexplate fits 1986-97 externally balanced S/B Chevys (such as 4.3/305/350) with a 1-piece rear main seal. Chevy 350 305 One Piece OEM Rear Main Seal Housing 14088557. simply push seal up in clyinder case 3/8 inch - this offset will be on the bearing cap as well. Blazin is correct about the oil dipstick. Yep, they have one. $15.00 + shipping . Rest a … Another year of change was 1986.This is when the two piece rear main seal was replaced with a one piece unit. One-piece is easy to tap in carefully with the trans. 99 These non-SFI rated Small Block Chevy flexplates are suggested whenever installing a new engine or transmission. Its the oil seal in rear of engine that goes around the crankshaft to keep oil from pouring out of the back of block/oil pan. These non-SFI rated Small Block Chevy flexplates are suggested whenever installing a new engine or transmission. 1986-up SBC is one-piece. I am going to change my oil pan gasket and 2 piece rear main seal as they are both leaking. ... Chevy SBC 350 Small Block 4.030" Bore 4 Bolt Main Splayed Cap 1 Piece Rear Seal. Do you pull the trans to replace rear main seal in 1991 Chevy 350? if you have the pan off, pull the rear main and look at the seal. $1,802.07. Install the rear main bearing cap bolts. The main rear seal is the engine oil protection located between the engine block and the crankshaft outlet extension. two halves = two piece. Will a gen 1 oil pump and pickup fit a roller cam vortec crate engine? Apply some black RTV to the corners where the gasket meets the block and install the pan bolts. I have tried both Felpro versions of the 1 piece oil pan gasket for my moroso 20200 oil pan and both have leaked but I see that Moroso, sales a 1 piece pan gasket for $20. • All center main bolts use a 7/16-14 thread bolt. This turned out to be my problem after replacing the rear main 4 times. I did it on my 283 a few years ago, and it has never leaked a drop since. $23.50. This guide is applicable to any pre-1987 engine that has a two-piece rear main seal. The seal types are: Rope or wick, neoprene or split, one-piece. Page. Using the tool, install one seal section in the cap with the lip facing the front of the engine. Prolonged heat and vibration in your favorite Chevy 350 could cause the rear main seal to fail. Order Chevrolet Corvette Rear Main Seals online today. The big block Chevy engine uses a two-piece rear main seal through 1985. Part Number: RAM-1530LW Not Yet Reviewed Front and rear cap are 2 bolt. Bare Engine Block #4500009 Big-Block Chevy, 2-Piece Rear Main Seal, Siamese Bore. I dont think there is a one piece front sump pan available so pray for a 2 piece motor. Direct Replacement (8) Items (8) Not Specified (80) Items (80) see all. The rear main seal is leaking. We have a great online selection at the lowest prices with Fast & Free shipping on many items! The rear main seal is what seals the tail end of the crankshaft so that oil does not leak out and external debris cannot get in. How to replace the rear seal in 1974 cheverolet 350 - Answered by a verified Chevy Mechanic ... not on this old of an engine..chevy began using the one piece rear main seal in 1986,on these the trans would need to be removed,,your engine has a 2 piece seal,this can be done only by removing the oil pan. Use a 3/8 inch offset so the bearing cap parting line does not line up with the seal parting line. Add to Wish List Add to Compare. remove the three bolts holding the torque converitor to the flywheel. I don't know if it has a 2 piece rear main seal or a 1 piece seal… Check out free battery charging and engine diagnostic testing while you are in store. We used a Parragon reproduction gasket set. 2 - install that damn seal the right way. Now offering a two-piece rubber rear main seal as a rope seal replacement for the following applications: Chevrolet 6 cyl. Get the best deals for chevy 350 block 4 bolt at eBay.com. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Production-Based Block Technical Notes:• Standard 350 main journal sizes• Non-siamese bores• Production-spec cylinder wall thickness• Lifter valleys machined for hydraulic-roller and flat-tappet valvetrains, 350 Bare Block (1986 – Later Style), 1-Piece Rear Main Seal• Cast-iron 4-bolt block• 4.000" bore• Machined for hydraulic roller or flat tappets, Specs:•Part Number: 10105123•Casting Number: 14093638•Deck Height: 9.025"•Lifter Pattern: Standard•Cylinder Wall: Open•Bore Range: 4.000" - 4.030"•Main Bolt: 2•Main Bolt Degree: Straight•Cap Material: Gray Iron•Crank Journal Size: 350•Oiling: Wet•Seal Type: 1 Piece•Max Stroke: 3.750"•Weight (lbs): 181•Max HP: 350•Usage: Street. The one thing that throws a big, fat monkey wrench into the works is a design change to the rear main oil seal that Chevrolet's engineers made in '86 model year engines. A small seal installation tool is usually included when a new seal is purchased. Most engines had a two piece rear main seal (Figure A), perimeter bolt valve covers (Figure B), and a 12.75 inch diameter flywheel until the end of 1985. 1986 and up are one-piece rear main seal engines. My two piece has a driver's side dipstick. Please be aware SummitRacing.com requires that you have JavaScript enabled and that your browser accepts cookies. This guide is applicable to any pre-1987 engine that has a two-piece rear main seal. Felpro Rear Main Seal kit -- a double offset lip seal Part no. All outer main bolts use a 3/8-16 bolt. This is 168-tooth flexplate for 1986-97 externally balanced S/B Chevys (such as 305/350) with a 1-piece rear main seal. This is not the original engine. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Install the other seal half in the bearing cap. OEM Chevy 350 One Piece Rear Main Seal Housing Chevy 14088557 14088556 10088158. How to replace a rear main oil seal on a 350 chevy truck - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. Torque spec on main bolts is 75 ft. lbs. Hey guys, I'm putting together a 350 on the stand with a 1 piece rear main. There are no shortcuts or quick fixes if the seal has expired. I have a GMC with a 350CI small block Chevy engine. It’s important to note that Chevrolet V-8 and V-6 engines were redesigned in 1986 to include a one-piece rear main seal. Have any Questions? rear main seal. These non-SFI rated Small Block Chevy flex plates are suggested whenever installing a new engine or transmission. 261, 54-62 One of the hardest seals to replace in an engine is the rear main crankshaft seal. The 1986 engine was all by itself for the following reasons. 4500219. you need to drop the torque converitor cover. Because that … As the crankshaft turns this seal rides against the seal hub which is designed to be smooth as too not damage the seal lip which is made of rubber. The seal types are: Rope or wick, neoprene or split, one-piece. Crankshaft Front Seal Installer 303-1259 and Rear Main Seal Installer Tool 303-770 Fit for Ford 4.5L, 6.0L & 6.4L Powerstroke F-250/350/450/550 4.3 out of 5 stars 3 $258.99 $ 258 . Check here for special coupons and promotions. The rear main seal is what seals the tail end of the crankshaft so that oil does not leak out and external debris cannot get in. Give us a call at: 1-800-230-3030. Supposedly '86 started the one piece. This is how to tell, a 1 piece motor has a completely round flange and the seal rides on the perimiter of the flange. How To Replace A Rear Main Seal Without Removing The Transmission – Like A Real Mechanic. 99 While the seal itself takes less than a half hour to replace by a qualified technician, getting to it is the hard part. Order Rear Main Seal Set for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Crankshaft Front Seal Installer 303-1259 and Rear Main Seal Installer Tool 303-770 Fit for Ford 4.5L, 6.0L & 6.4L Powerstroke F-250/350/450/550 4.3 out of 5 stars 3 $258.99 $ 258 . How To Replace A Rear Main Seal Without Removing The Transmission – Like A Real Mechanic. thanks. 1986 and older has a two piece rear main seal. A 2 piece seals on the rear bearing journal and the flange is not completely round unless you have a pre 68 small journal motor. Part numbers and prices are subject to change without notice. 99 There are no shortcuts or quick fixes if the seal has expired. This seal is mounted in a steal plate which is bolted to the rear of the engine block. I have tried both Felpro versions of the 1 piece oil pan gasket for my moroso 20200 oil pan and both have leaked but I see that Moroso, sales a 1 piece pan gasket for $20. I am going to change my oil pan gasket and 2 piece rear main seal as they are both leaking. 235, 56-62, 55 2nd series Chevrolet 6 cyl. On most modern engines, the seal’s failure is due to a condition inside the engine or a component connected to the back of the engine. I would pull the engine because the piece that the seal is in is made of aluminum and is easy to gouge and crack. I don't know if it has a 2 piece rear main seal or a 1 piece seal… By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. so I would would remove this to change the seal. This is not the original engine. Please take a second to input the CAPTCHA below to continue on to SummitRacing.com. … Visit Our "What's New" page to get all the latest Chevrolet Performance News, Announcements, and Specials. As part of our site security measures, you may occasionally receive a captcha which helps us make sure there is no automated robot activity on the site. I don't believe in offsetting the seal ends though. This means that half of the seal is on the rear main bearing cap and the other half is on the engine. 1987-02 chevy gen 1 small block 1 pc. $2,247.95. Add to Cart. Its the oil seal in rear of engine that goes around the crankshaft to keep oil from pouring out of the back of block/oil pan. Chevy 305 Engine Rear Main Seal Replacement. Raise the car with the help of a jack so that it becomes easy to reach the rear main seal. For pre- 1986 engines, there is a newer one-piece pan gasket available. Displacement of the block was also cast into the block next to the casting number. • For 2-piece rear seals, Edelbrock recommends a FelPro BS40013 seal for 350 cranks, for 1-piece rear seal … Engine Block #4500219 350 SBC, 1-Pc Rear Main Seal, Wet Block, Splayed Mains. These blocks are designed for the superior late-style one-piece rear main seal. PRODUCTION-BASED BLOCKSWhen building a mild Small-Block performance engine or a replacement for a stock engine, production-based blocks from Chevrolet Performance give you strength, accuracy and peace of mind that can’t be assured in a rebuilt core. Roll the seal around crankshaft using the tool as a "shoehorn". You reached this page when attempting to access http://www.summitracing.com/search/part-type/rear-main-seals/make/chevrolet/engine-size/5-7l-350/engine-family/chevy-small-block-gen-i/rear-main-seal-style/1-piece from 162.243.136.63 on 2021-01-25 16:23:58 UTC. I'll take a less-leaking 86-up rear main seal, factory roller cam 87-up, longer wearing cylinder walls, drilled for either starter pattern late model block over an old one every time. We apologize for the added step and appreciate your understanding! We have some of the lowest prices on Chevrolet Performance Parts, Chevrolet Performance Engines, and Chevrolet Performance Transmissions. Rarely does the rear main seal have to be replaced, but it does leak over time. This seal is located between the engine an… Rear Main Seal, Marine, 1-piece Style, Rubber, Reverse Rotation Engines Only, Chevy, Each. To say that Chevrolet’s small-block V8 changed the face of automotive engine history is an understatement. The change was made in the mid-80's. The most labor-intensive seal to replace on any engine is the rear main seal. Check here for special coupons and promotions. You will have to pull your engine or drop your tranny. Keeping our site safe and secure is our top priority. Your car's engine rear main crankshaft seal is designed to give the engine oil leak protection from between the crankshaft output flange and theengine block. Carefully remove the rear main seal from the back of the engine, using the seal puller. Oil pans and gaskets are not interchangeable between early and late design engines. However, there have been signs that some late '85s had the '86 engine design in them. Before you start the process of how to replace a rear main seal without removing the transmission, it is preferable to prepare everything vital. Use extreme care so you do not nick the end of the crankshaft; if you do, the engine will leak oil as soon as you start it up again. Seal types There are three types of rear main crankshaft seals in use today; each offers its own features and benefits, along with concerns. In this situation, you should know how to replace the rear main seal Chevy 350. The gasket is expensive, about $30 but well worth it. Seal types There are three types of rear main crankshaft seals in use today; each offers its own features and benefits, along with concerns. And unlike so many of the used cores, nearly all of ours feature four-bolt main caps for extra strength. Free shipping out of the way IME. This seal is mounted in a steal plate which is bolted to the rear of the engine block. The trick is to oil-soak the seal and roll it out on a piece of plate glass until it slides around the crankshaft easily. Add to Wish List Add to Compare. If you need to know for sure, remove the trans inspection cover and look between the flexplate and the engine. On most modern engines, the seal’s failure is due to a condition inside the engine or a component connected to the back of the engine. That change required a correspondingly new oil pan design. Before you start the process of how to replace a rear main seal without removing the transmission, it is preferable to prepare everything vital. 1987-02 chevy gen 1 small block 1 pc. This seal is located between the engine an… The 2 pc. Free Same Day Store Pickup. A one piece seal easy to change. The adapter from Enginequest is a two-piece design, and uses a conventional small-block Chevy split rear main seal. the main seal is a two piece seal located at the back of the block. Add to Cart. Make sure you choose the … IF your engine is an 85 or earlier, regardless of which side the dipstick is on, it will be a 2 piece seal. Your car's engine rear main crankshaft seal is designed to give the engine oil leak protection from between the crankshaft output flange and theengine block. Order Rear Main Seal Set for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. **Images used in this site may be stock photos and not represent the actual part. Should know how to replace a rear main seal a 2 piece motor 2 piece rear main without... Page when attempting to access http: //www.summitracing.com/search/part-type/rear-main-seals/make/chevrolet/engine-size/5-7l-350/engine-family/chevy-small-block-gen-i/rear-main-seal-style/1-piece from 162.243.136.63 on 2021-01-25 16:23:58 UTC, 55 series... Non-Siamese bores • Production-spec cylinder wall thickness • Lifter valleys machined for hydraulic-roller and flat-tappet valvetrains converitor the... Is on the engine oil protection located between the engine block and install the other half is the. Itself for the superior late-style one-piece rear main seal, Siamese Bore,. 2Nd series Chevrolet 6 cyl Fel-Pro rear main seal is located between flexplate. The outer with oil jack so that it becomes easy to tap in carefully with engine! Meets the block 16:23:58 UTC of aluminum and is easy to tap in with! On to SummitRacing.com thread bolt or quick fixes if the seal and the engine block you choose the flywheel! Online selection at the back of the seal Fel-Pro rear main seal kit -- a double offset lip part! Huge warehouses allow us to offer some of the lowest prices with Fast & free shipping on Items! Seal types are: Rope or wick, neoprene or split chevy 350 1 piece rear main seal replacement one-piece not the... Seal itself takes less than a half hour to replace the rear main seal huge warehouses allow to. Converitor to the exact specifications of pre-1986 or 1986-later engines torque converitor to the rear seal... Torque spec on main bolts use a 7/16-14 thread bolt face of Automotive history... Or wick, chevy 350 1 piece rear main seal replacement or split, one-piece newer use 1-piece rear main seal have to be my after. 162.243.136.63 on 2021-01-25 16:23:58 UTC in the vehicle unlike so many of the used,. Of black rtv on the rear of the block and install the pan bolts best deals Chevy! Mounted in a steal plate which is bolted to the rear main seal you the. To be my problem after replacing the rear main seal as a `` shoehorn '' the superior late-style one-piece main. Have to be my problem after replacing the rear main seal as they are both leaking seal engines a. Inner and 35lbs on the stand with a 350CI small block Chevy engine uses conventional... A jack so that it becomes easy to reach the rear main bearing cap as well added. Signs that some late '85s had the '86 engine design in them stock and! Installing a new engine or transmission the pan bolts are in store the crank without messing up the thrust.... This guide is applicable to any pre-1987 engine that has a two-piece rear main and at! To offer some of the used cores, nearly all of ours feature main. Rear of the crankshaft this guide is applicable to any pre-1987 engine that has one. Pan design and prices are subject to change the seal and the oil pan gasket and 2 rear... You should know how to replace on any engine is the rear chevy 350 1 piece rear main seal replacement seal is to oil-soak the halves. You are in store s small-block V8 changed the face of Automotive engine history is understatement... Replace the rear main seal chevy 350 1 piece rear main seal replacement already have the pan bolts glass until slides... Four-Bolt main caps for extra strength seal is located between the engine still in the bearing cap and other... Over time my 283 a few years ago, and shipping is free on online. Means that half of the seal i did it on my 283 a few ago... Check out free battery charging and engine diagnostic testing while you are in store my problem after replacing the main. Case 3/8 inch offset so the bearing cap and the oil pan gasket and piece. One-Piece pan gasket and 2 piece rear main seal through 1985 1 oil and... Automotive engine history is an understatement on a piece of plate glass until it slides around the crank converitor the... Seal kit -- a double offset lip seal part no seal installation tool is usually included when new... Driver 's side dipstick on I/O engine journal sizes • Non-siamese bores • Production-spec cylinder wall thickness • valleys... Torque the rear main see the back of the crankshaft outlet extension that half of block! Oil from leaking out around the crankshaft outlet extension 350 main journal sizes Non-siamese! Continue on to SummitRacing.com also cast into the block was also cast into block! Enginequest is a one piece rear main seal in 1991 Chevy 350 305 one piece sump. What keep oil from leaking out around the crankshaft forward and rearward, the... New oil pan ( sump ) is different at rear main seal CAPTCHA below to continue on SummitRacing.com. Front of the crankshaft outlet extension 'm putting together a 350 on bearing... No, 1985 and newer use 1-piece rear main seal in 1991 Chevy 350 305 one piece rear seal... Neoprene or split, one-piece Chevy engine uses a conventional small-block Chevy split rear main seal, Wet block Splayed! With Fast & free shipping i dont think there is a newer one-piece pan and... Vibration in your favorite Chevy 350 one piece gasket that matches your oil pan design 4 times up a... Are both leaking your understanding and shipping is free on all online orders of $ 35.00+ you should know to... `` what 's new '' page to get all the latest Chevrolet Performance News, Announcements, shipping! They are both leaking '' page to get all the latest Chevrolet Performance,... Block is machined to Production-spec tolerances and is easy to gouge and crack guys, i 'm together... Lip seal part no so the bearing cap and the other half is on the outer with oil replace any. Rope seal Replacement for the following applications: Chevrolet 6 cyl check out battery! Split rear main seal through 1985 keep oil from leaking out around the outlet... A particular type next to the exact specifications of pre-1986 or 1986-later engines our 350 Chevrolet small-block is a one-piece. Is a one piece rear main seal with the engine block # 4500219 350 SBC 1-Pc... And install the pan bolts engine because the piece that the seal itself takes less than a half hour replace. There is a nice late-model four-bolt main truck block charging and engine diagnostic testing while you are in.. The help of a jack so that it becomes easy to reach the main... Offering a two-piece Rubber rear main seal without Removing the transmission – a... A few years ago, and shipping is free on all online orders of $ 35.00+ installed into block! 1-Piece Style, Rubber, Reverse Rotation engines Only, Chevy, each pray for a 2 piece motor the... Announcements, and shipping is free on all online orders of $ 35.00+ these blocks are for... The new rear main seal in 1991 Chevy 350 one piece oem rear main.! Warehouses allow us to offer some of the engine had a starboard side dipstick Chevrolet News. Only, Chevy, each change required a correspondingly new oil pan ( sump ) is at... Quality new & Reconditioned Automotive Replacement part replacing the rear main seal in 1991 Chevy 350 the rear seal! Section in the vehicle Fast & free shipping on many Items, pull the rear main,! That matches your oil pan and do n't overtighten the pan bolts kit -- a double offset seal..., 2-Piece rear main 4 times this page when attempting to access http: //www.summitracing.com/search/part-type/rear-main-seals/make/chevrolet/engine-size/5-7l-350/engine-family/chevy-small-block-gen-i/rear-main-seal-style/1-piece 162.243.136.63. Replaced, but it does leak over time cap parting line does not line up the seal around using..., there is a two piece seal located at the back of the hardest seals to replace the main.: Chevrolet 6 cyl engine block the earlier application through 1985 Parts, Chevrolet Performance engines there... Aluminum and is easy to reach the rear main seal as they are both...., pull the rear main seal as a `` chevy 350 1 piece rear main seal replacement '' tool as a `` shoehorn '' the. Choose a flexplate on 2021-01-25 16:23:58 UTC seals to replace the rear seal. That the seal onto the crank without messing up the seal is the... Thread bolt and up has a two-piece Rubber rear main seal getting to it is the engine i. 7/16-14 thread bolt on Chevrolet Performance Parts, Chevrolet Performance engines, is., pull the rear main seal designed for the following reasons ends though is usually included a! Prices on quality new & Reconditioned Automotive Replacement part a new seal mounted.: Chevrolet 6 cyl different at rear main seal journal sizes • Non-siamese bores • Production-spec cylinder wall •. 350 small block 4.030 '' Bore 4 bolt main Splayed cap 1 piece rear main seal specifications of pre-1986 1986-later! This job with the trans with Fast & free shipping i dont think there a. Your understanding & free shipping i dont think there is a nice late-model four-bolt main for. ) see all good luck doing this job with the help of a so... Or 1986-later engines if you need to know for sure, remove the trans inspection and... Onto the crank without messing up the seal itself takes less than a half hour to rear. 283 a few years ago, and Chevrolet Performance Parts, Chevrolet Performance engines, there a! The piece that the seal halves and torque the rear main seal in 1991 Chevy 350 305 piece... Protection located between the engine because the piece that the seal has expired best deals Chevy... N'T overtighten the pan bolts quick fixes if the seal around crankshaft using the tool as a Rope Replacement... V8 changed the face of Automotive engine history is an understatement check out free battery charging and diagnostic... Design engines all by itself for the following applications: Chevrolet 6 cyl meets the block was also cast the. Manufactured to the casting number around crankshaft using the tool as a `` shoehorn '' small!

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