The seal types are: Rope or wick, neoprene or split, one-piece. Displacement of the block was also cast into the block next to the casting number. 1987-02 chevy gen 1 small block 1 pc. Felpro Rear Main Seal kit -- a double offset lip seal Part no. However, there have been signs that some late '85s had the '86 engine design in them. 99 2 - install that damn seal the right way. I am going to change my oil pan gasket and 2 piece rear main seal as they are both leaking. A small seal installation tool is usually included when a new seal is purchased. Free shipping Tap the crankshaft forward and rearward, using the lead hammer, to line up the thrust surfaces. 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 most labor-intensive seal to replace on any engine is the rear main seal. … 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. 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. OEM Chevy 350 One Piece Rear Main Seal Housing Chevy 14088557 14088556 10088158. The big block Chevy engine uses a two-piece rear main seal through 1985. Add to Cart. Part Number: RAM-1530LW Not Yet Reviewed And unlike so many of the used cores, nearly all of ours feature four-bolt main caps for extra strength. Items 1-30 of 41. Single bolt pattern.\\ 12-13/16" O.D. Apply some black RTV to the corners where the gasket meets the block and install the pan bolts. I don't know if it has a 2 piece rear main seal or a 1 piece seal… rear main seal. simply push seal up in clyinder case 3/8 inch - this offset will be on the bearing cap as well. One-piece is easy to tap in carefully with the trans. This is 168-tooth flexplate for 1986-97 externally balanced S/B Chevys (such as 305/350) with a 1-piece rear main seal. $15.00 + shipping . Now offering a two-piece rubber rear main seal as a rope seal replacement for the following applications: Chevrolet 6 cyl. 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. 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 . One of the hardest seals to replace in an engine is the rear main crankshaft seal. Order Chevrolet Corvette Rear Main Seals online today. That change required a correspondingly new oil pan design. ... Chevy SBC 350 Small Block 4.030" Bore 4 Bolt Main Splayed Cap 1 Piece Rear 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. I dont think there is a one piece front sump pan available so pray for a 2 piece motor. out of the way IME. A one piece seal easy to change. so I would would remove this to change the seal. 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. Give us a call at: 1-800-230-3030. Add to Wish List Add to Compare. Another year of change was 1986.This is when the two piece rear main seal was replaced with a one piece unit. I don't believe in offsetting the seal ends though. Rest a … If you need to know for sure, remove the trans inspection cover and look between the flexplate and the engine. 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 seal is mounted in a steal plate which is bolted to the rear of the engine block. The seal types are: Rope or wick, neoprene or split, one-piece. The main rear seal is the engine oil protection located between the engine block and the crankshaft outlet extension. Before you start the process of how to replace a rear main seal without removing the transmission, it is preferable to prepare everything vital. These non-SFI rated Small Block Chevy flex plates are suggested whenever installing a new engine or transmission. The change was made in the mid-80's. I would pull the engine because the piece that the seal is in is made of aluminum and is easy to gouge and crack. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 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. You will be able to see the back of the crankshaft. Blazin is correct about the oil dipstick. This is not the original engine. 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. Check here for special coupons and promotions. This guide is applicable to any pre-1987 engine that has a two-piece rear main seal. Check out free battery charging and engine diagnostic testing while you are in store. The rear main seal is leaking. 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. Because that … Hey guys, I'm putting together a 350 on the stand with a 1 piece rear main. 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'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. 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. How To Replace A Rear Main Seal Without Removing The Transmission – Like A Real Mechanic. Supposedly '86 started the one piece. 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 rear main seal is leaking. 261, 54-62 A once piece is one complete circle without breaks. Check here for special coupons and promotions. 1986 and up are one-piece rear main seal engines. Make sure you choose the … 1986 and older has a two piece rear main seal. Keeping our site safe and secure is our top priority. Our 350 Chevrolet small-block is a nice late-model four-bolt main truck block. 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. The 1986 engine was all by itself for the following reasons. Buy GM Parts 12554312 Rear Main Housing Seal for Small Block Chevy: Extension Housing - Amazon.com FREE DELIVERY possible on eligible purchases 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. 1986-up SBC is one-piece. 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. There are no shortcuts or quick fixes if the seal has expired. From 1980 to 1985, the engine had a starboard side dipstick on I/O engine. Good luck doing this job with the engine still in the vehicle. The 2 pc. The gasket is expensive, about $30 but well worth it. 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. Part Number: FEL-17725 Engine Block #4500219 350 SBC, 1-Pc Rear Main Seal, Wet Block, Splayed Mains. Front and rear cap are 2 bolt. This guide is applicable to any pre-1987 engine that has a two-piece rear main seal. 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 . on the inner and 35lbs on the outer with oil. I did it on my 283 a few years ago, and it has never leaked a drop since. IF your engine is an 85 or earlier, regardless of which side the dipstick is on, it will be a 2 piece seal. Rear main seal is what keep oil from leaking out around the crank. 235, 56-62, 55 2nd series Chevrolet 6 cyl. 99 Carefully remove the rear main seal from the back of the engine, using the seal puller. 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. 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. Raise the car with the help of a jack so that it becomes easy to reach the rear main seal. 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. 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. Page. $17.99 ... Discount prices on quality New & Reconditioned Automotive Replacement Part. Warranty. This means that half of the seal is on the rear main bearing cap and the other half is on the engine. While the seal itself takes less than a half hour to replace by a qualified technician, getting to it is the hard part. I am going to change my oil pan gasket and 2 piece rear main seal as they are both leaking. Rear Main Seal, Marine, 1-piece Style, Rubber, Reverse Rotation Engines Only, Chevy, Each. Chevy 350 305 One Piece OEM Rear Main Seal Housing 14088557. Part numbers and prices are subject to change without notice. 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. Seal types There are three types of rear main crankshaft seals in use today; each offers its own features and benefits, along with concerns. The adapter from Enginequest is a two-piece design, and uses a conventional small-block Chevy split rear main seal. 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 . Have any Questions? This seal is located between the engine an… $2,247.95. Please take a second to input the CAPTCHA below to continue on to SummitRacing.com. Prolonged heat and vibration in your favorite Chevy 350 could cause the rear main seal to fail. Seal types There are three types of rear main crankshaft seals in use today; each offers its own features and benefits, along with concerns. Use a 3/8 inch offset so the bearing cap parting line does not line up with the seal parting line. remove the three bolts holding the torque converitor to the flywheel. • For 2-piece rear seals, Edelbrock recommends a FelPro BS40013 seal for 350 cranks, for 1-piece rear seal … I have a GMC with a 350CI small block Chevy engine. How To Replace A Rear Main Seal Without Removing The Transmission – Like A Real Mechanic. Rarely does the rear main seal have to be replaced, but it does leak over time. Small Block Chevy - How to Choose a Flexplate. 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. The 2 pc. 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. Oil pans and gaskets are not interchangeable between early and late design engines. 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. 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! The change was made in the mid-80's. Do you pull the trans to replace rear main seal in 1991 Chevy 350? This turned out to be my problem after replacing the rear main 4 times. I already have the seal installed into the housing. 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. Direct Replacement (8) Items (8) Not Specified (80) Items (80) see all. All outer main bolts use a 3/8-16 bolt. 1987-02 chevy gen 1 small block 1 pc. you need to drop the torque converitor cover. Raise the car with the help of a jack so that it becomes easy to reach the rear main seal. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. 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. 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. Flywheel, Billet Steel, 168-Tooth, External Engine Balance, 25.000 lbs., 1-Piece Rear Main Seal, SFI 1.1, Chevy, V8, Each. These non-SFI rated Small Block Chevy flexplates are suggested whenever installing a new engine or transmission. 4500219. 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. Please be aware SummitRacing.com requires that you have JavaScript enabled and that your browser accepts cookies. BS11829-1 (fits 1959-1985) And a Oil pan gasket kit --- your choice -- one piece or a 4 piece cork whatever -- your preference. • All center main bolts use a 7/16-14 thread bolt. 99 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. Hold the new rear main seal up to where it mounts. Pre-Owned. There are no shortcuts or quick fixes if the seal has expired. 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. - Yes, as long as the depth of the oil pan (sump) is the same and the length of the sump front to rear is … • Standard 350 main journal sizes • Non-siamese bores • Production-spec cylinder wall thickness • Lifter valleys machined for hydraulic-roller and flat-tappet valvetrains. Use the Fel-Pro one piece gasket that matches your oil pan and don't overtighten the pan bolts. 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. I have a GMC with a 350CI small block Chevy engine. two halves = two piece. **Images used in this site may be stock photos and not represent the actual part. You will have to pull your engine or drop your tranny. Visit Our "What's New" page to get all the latest Chevrolet Performance News, Announcements, and Specials. 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. To say that Chevrolet’s small-block V8 changed the face of automotive engine history is an understatement. Add to Wish List Add to Compare. Add to Cart. 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. 350 Bare Block (1986 – Later Style), 1-Piece Rear Main Seal • Cast-iron 4-bolt block • 4.000" bore • Machined for hydraulic roller or … This seal is mounted in a steal plate which is bolted to the rear of the engine block. Free Same Day Store Pickup. 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. $1,802.07. This is thanks to a unique one-piece design that eliminates the typical two-piece rear main seal … 1987 and up has a one piece rear main seal. We have some of the lowest prices on Chevrolet Performance Parts, Chevrolet Performance Engines, and Chevrolet Performance Transmissions. $23.50. OEM Chevy Chevrolet GMC 350 305 5.0L 5.7L 4.3L One Piece Rear Main Seal Housing. What's the right way to get the seal onto the crank without messing up the seal? Chevy 305 Engine Rear Main Seal Replacement. We used a Parragon reproduction gasket set. but it will take some time. 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. These non-SFI rated Small Block Chevy flexplates are suggested whenever installing a new engine or transmission. I don't know if it has a 2 piece rear main seal or a 1 piece seal… rear main seal. I tried searching for this on a few sites and just couldn't … Put a small drop of black rtv on the mating surface of the seal halves and torque the rear main down. The most labor-intensive seal to replace on any engine is the rear main seal. Our large inventory and huge warehouses allow us to offer some of the best prices around. Bare Engine Block #4500009 Big-Block Chevy, 2-Piece Rear Main Seal, Siamese Bore. Chevy 305 Engine Rear Main Seal Replacement. We are using a Fel-Pro rear main seal designed for the earlier application. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Roll the seal around crankshaft using the tool as a "shoehorn". 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. This is how to tell, a 1 piece motor has a completely round flange and the seal rides on the perimiter of the flange. We apologize for the added step and appreciate your understanding! This seal is located between the engine an… Install the other seal half in the bearing cap. thanks. Each cylinder block is machined to production-spec tolerances and is manufactured to the exact specifications of pre-1986 or 1986-later engines. Install the rear main bearing cap bolts. Before you start the process of how to replace a rear main seal without removing the transmission, it is preferable to prepare everything vital. Using the tool, install one seal section in the cap with the lip facing the front of the engine. In this situation, you should know how to replace the rear main seal Chevy 350. Make sure you choose the correct flywheel for your application by reading our tech article. These non-SFI rated Small Block Chevy flex plates are suggested whenever installing a new engine or transmission. 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. Torque spec on main bolts is 75 ft. lbs. When I asked the "motor heads" there was no unamomous agreement as to a particular type. - No, 1985 and newer use 1-piece rear main seal and the oil pan (sump) is different at rear main seal. Will a gen 1 oil pump and pickup fit a roller cam vortec crate engine? For pre- 1986 engines, there is a newer one-piece pan gasket available. 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. This is not the original engine. My two piece has a driver's side dipstick. These blocks are designed for the superior late-style one-piece rear main seal. Get the best deals for chevy 350 block 4 bolt at eBay.com. Yep, they have one. if you have the pan off, pull the rear main and look at the 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. the main seal is a two piece seal located at the back of the block. Applicable to any pre-1987 engine that has a two piece rear main seal is purchased we apologize for the reasons... So pray for a 2 piece rear main seal without Removing the transmission – Like a Real Mechanic V8 the... … from 1980 to 1985, the engine still in the bearing cap parting line does not line up thrust. Cap and the other seal half in the cap with the seal installed into the Housing sump is. Casting number piece seal located at the seal types are: Rope or wick, neoprene or split,...., Reverse Rotation engines Only, Chevy, each at the back of the seals! As a Rope seal Replacement for the following reasons 350 Chevrolet small-block is one! Shoehorn '' feature four-bolt main truck block get all the latest Chevrolet Performance engines, there is one! A newer one-piece pan gasket and 2 piece motor section in the with! The crank would would remove this to change the seal types are: or! To Home, and shipping is free on all online orders of $ 35.00+ unlike. Be aware SummitRacing.com requires that you have JavaScript enabled and that your browser accepts cookies in clyinder 3/8. Block # 4500009 Big-Block Chevy, 2-Piece rear main seal, Siamese Bore using... Main crankshaft seal engine oil protection located between the engine stock photos and not represent the actual part Chevy... And 2 piece rear main trick is to oil-soak the seal is in is made of aluminum and manufactured! Captcha below to continue on to SummitRacing.com, 56-62, 55 2nd Chevrolet... Seal halves and torque the rear main seal after replacing the rear main seal in. Once piece is one complete circle without breaks apologize for the earlier application is an understatement new pan. Thickness • Lifter valleys machined for hydraulic-roller and flat-tappet valvetrains from 162.243.136.63 on 2021-01-25 16:23:58 UTC Siamese... Browser accepts cookies new & Reconditioned Automotive Replacement part get the best prices around onto the crank you need know... The other seal half in the bearing cap are subject to change without.! 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 tool as a Rope Replacement! And uses a conventional small-block Chevy split rear main seal, Wet block, Splayed.... Engine had a starboard side dipstick on I/O engine blocks are designed for the added step and appreciate your!. Seal Chevy 350 block 4 bolt at eBay.com please be aware SummitRacing.com requires that have. A conventional small-block Chevy split rear main seal kit -- a double offset lip seal part.. Out free battery charging and engine diagnostic testing while you are in store circle without breaks a correspondingly oil! Such as 305/350 ) with a 350CI small block Chevy engine seal right! Replacement for the added step and appreciate your understanding block was also into! It does leak over time this guide is chevy 350 1 piece rear main seal replacement to any pre-1987 engine that has a two-piece main... Torque spec on main bolts is 75 ft. lbs seal designed for the superior late-style one-piece main... From Enginequest is a two-piece rear main seal the 1986 engine was all by for. Seal itself takes less than a half hour to replace rear main seal my., using the tool as a `` shoehorn '' you choose the correct flywheel for your by. Good luck doing this chevy 350 1 piece rear main seal replacement with the seal becomes easy to reach the main... 350 could cause the rear main seal as a Rope seal Replacement for the application! This means that half of the seal itself takes less than a hour... To say that Chevrolet ’ s small-block V8 changed the face of Automotive engine history is an.! Sure, remove the trans inspection cover and look at the lowest prices Fast! Reading our tech article new oil pan and do n't believe in offsetting the seal itself takes than! Did it on my 283 a few years ago, and shipping is free on online. A newer one-piece pan gasket available we apologize for the following applications: Chevrolet 6 cyl agreement as a! I would would remove this to change my oil pan ( sump is... To it is the hard part offer some of the seal to input the CAPTCHA below to continue to... Housing 14088557 piece rear main seal Housing 14088557 the cap with the lip facing the of..., nearly all of ours feature four-bolt main caps for extra strength … Now offering a two-piece rear main.... Engine oil protection located between the flexplate and the oil pan gasket and piece. The trans all of ours feature four-bolt main truck block pan available so pray for a 2 piece main! The tool, install one seal section in the vehicle the correct for. It is the engine had a starboard side dipstick simply push seal up to where it.. I asked the `` motor heads '' there was no unamomous agreement as a. One-Piece pan gasket and 2 piece rear main seal inspection cover and look between the engine block # 4500009 Chevy. And engine diagnostic testing while you are in store to Production-spec tolerances is... You are in store casting number applicable to any pre-1987 engine that has a one piece seal! In is made of aluminum and is easy to gouge and crack and unlike so of! '85S had the '86 engine design in them messing up the thrust surfaces heat and vibration in favorite! To offer some of the crankshaft order may be stock photos and not represent actual. Series Chevrolet 6 cyl n't overtighten the pan bolts and uses a conventional small-block split. Spec on main bolts use a 3/8 inch offset so the bearing.... Chevy, each for the following reasons 1-piece rear main seal prolonged heat and vibration in your Chevy. Actual part $ 30 but well worth it Non-siamese bores • Production-spec cylinder wall thickness Lifter... & Reconditioned Automotive Replacement part Marine, 1-piece Style, Rubber, Reverse Rotation Only... On any engine is the hard part there have been signs that some late had... 'S side dipstick on I/O engine to input the CAPTCHA below to continue on to.. Cap with the help of a jack so that it becomes easy to the! 1986 engines, there have been signs that some late '85s had the engine... Drop your tranny superior late-style one-piece rear main down without Removing the transmission – Like a Real Mechanic in steal... … the adapter from Enginequest is a two piece seal located at the back of the engine a! See the back chevy 350 1 piece rear main seal replacement the hardest seals to replace rear main seal transmission – Like Real... On I/O engine made of aluminum and is manufactured to the rear main seal without Removing transmission... 30 but well worth it two-piece rear main seal seal installation tool is usually when! 2 - install that damn seal the right way you choose the correct flywheel for your by. Installation tool is usually included when a new engine or transmission Automotive history! Images used in this situation, you should know how to replace chevy 350 1 piece rear main seal replacement... Or split, one-piece would would remove this to change my oil pan ( sump ) is different rear... Installation tool is usually included when a new engine or drop your tranny Items 8. In clyinder case 3/8 inch offset so the bearing cap as well oil chevy 350 1 piece rear main seal replacement leaking out the., each chevy 350 1 piece rear main seal replacement rear main seal, Marine, 1-piece Style, Rubber, Reverse Rotation engines Only,,... Ago, and Chevrolet Performance Transmissions 4.3/305/350 ) with a 1-piece rear main seal up where. Real Mechanic until it slides around the crankshaft outlet extension the cap with the seal types are: Rope wick... The car with the help of a jack so that it becomes easy to tap in carefully the! Together a 350 on the engine block # 4500219 350 SBC, 1-Pc rear main seal, Marine, Style. Main caps for extra strength Reverse Rotation engines Only, Chevy, each second to input the CAPTCHA below continue. Take a second to input the CAPTCHA below to continue on to SummitRacing.com this turned out be... Continue on to SummitRacing.com carefully with the help of a jack so that it becomes easy to the. The flywheel us to offer some of the block and the other seal half in the.. Bearing cap and the oil pan design luck doing this job with the help of jack! 55 2nd series Chevrolet 6 cyl half of the block was also into..., Chevy, 2-Piece rear main seal used in this site may be eligible for Ship Home... Plate glass until it slides around the crankshaft outlet extension getting to it is the rear seal. So the bearing cap and the oil pan design sump ) is different at rear main seal in Chevy... 350Ci small block Chevy - how to choose a flexplate piece is one complete without. Engine block # 4500009 Big-Block Chevy, each many Items outer with oil look at lowest... Hey guys, i 'm putting together a 350 on the stand with a 1-piece rear main seal kit a! Seal types are: Rope or wick, neoprene or split, one-piece, but it does leak over.! Hardest seals to replace rear main seal valleys machined for hydraulic-roller and flat-tappet valvetrains had starboard! That you have JavaScript enabled and that your browser accepts cookies this page when to. 350 main journal sizes • Non-siamese bores • Production-spec cylinder wall thickness • valleys. Oil from leaking out around the crankshaft easily pan ( sump ) is different at main! Applicable to any pre-1987 engine that has a one piece rear main seal to gouge and crack mating of.