all oil passages are radiused and journals are micro-polished. the oil pan is different and uses a one piece rubber pan gasket (kind of nifty really). Does it matter what brand of tyres you put on your car? If this engine has a lot of miles, you should have it bored too. $2,247.95. How do I get my crypto currency’s to auto deposit without my input ? My first video....Two piece rear main seal replacement on my 1971 Corvette. In 2022, what will your car need to make your car go? This guide is applicable to any pre-1987 engine that has a two-piece rear main seal. Or he says if they did, it should have dried out from sitting for 2 years. Join Yahoo Answers and get 100 points today. Bore, Raised Cam, 2-Piece Rear Main Seal, Chevy, Small Block, Each Part Number: WRL-084125RC Not Yet Reviewed 86 went 1 piece rear, 87 went 1piece roller. 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. BOWTIE : 10054727 : 1986-up : 350 : 2/4 : one piece rear seal, some "Made in Canada" 10066036 : 350 : 2/4 : Target Master/Goodwrench crate motor, 2-piece rear seal, "Hecho en Mexico" 10066038 : 1994 : 350 : 4 : Goodwrench crate motor, 2-piece rear seal… 4500219. The one piece goes on over the back of the crank shaft to replace it. rear main seal. the 1 piece seal is found on 87 &up gm v8's. Will either one... For the best answers, search on this site https://shorturl.im/avWgN. 2 or 4. Engine Block, Cast Iron, 350 Mains, Billet Main Caps, 4.120 in. SB Chevy 350 Race Prep Engine Block, 1 Piece Rear Main Seal, 4 Bolt Main, Align-Honed, Bell Housing Squared, Parallel Square Decked to 9.005", Honed with Torque Plates to 4.030" Bore, Lifter Bore Honed, Cam Bearings and Freeze Plugs installed, Block Cleaned and Ready For Assembly *New GM Block* Machined For Roller Cam Starting in 1986 they changed to a one piece. The two piece you need to remove the rear main bearing cap to replace it. The fun won't last long, though, when the block cracks, leaks water, or flexes enough to pinch the main bearings or lose the head-gasket seal. 10049804 . 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. One-piece is easy to tap in carefully with the trans. I was offered a used 350. Chevy Small Block V8, 153 Tooth Count, 16.2 lbs. Some people are getting quotes of up to $2,500 dollars on some vehicles, which is way to expensive for what I … The 2 pc. 4. Keep in mind, if it isn't done right, you're building a nice boat anchor. 10051184 . dude call the vin off the engine into the dealership near you the code for the engine numbers tells you the age and the model and where they made it get a book on the car a hanes that covers 350 small block at auto zone its what 7.00 and it may save you a lot of workk the code for the makers vin is explained in the front of the Hanes and the seal question will not be a question it will show you the right kit and parts for the rebuild good luck A Nova owner. What is the alternative to spinning your wheels. This means that half of the seal is on the rear main bearing cap and the other half is on the engine. 350 engine 1 piece vs 2 piece rear main seal???? Can driving at 100 KPH  before the timing belt snapped cause any serious damage to the engine. DO TO THE IRREGULARITIES IN BLOCK AND OIL PANS THIS ADAPTER IS NOT DESIGNED TO USE THE ORIGINAL STYLE RUBBER REAR OIL PAN SEAL. Join Yahoo Answers and get 100 points today. The best thing to do is purchase a ring and bearing kit for your engine. 350 : N/A : 4 : 1 piece rear main seal. If you have the skill set and have access to the right tools, you can build a very strong small block for right around $2000. All the way up through 1985 Chevy used a two piece rear main seal design. 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. I had it installed and it fired right up and runs great. Aluminum Pontiac Super Duty version of Gen.I SBC 4.00" bore 350 mains 2-piece rear seal splayed caps GTP race block. 2008 Cadillac CTS 3.6 DI? A3 Oem Chevy 350 1 Piece Rear Main Seal Housing Chevy 14088557 14088556 10088158 12.50 View Item Details Black 7qt Drag Style Oil Pan 86-02 Chevy 305 350 Sbc 5.7 - 1 Pc Rear Main Seal 73.49 View Item Details Stage 1 Engine Rebuild Kit W Flat Top Pistons For 1967-1985 Chevrolet 350 … I have a GMC with a 350CI small block Chevy engine. How do i figure out what i have ?? Will either one work on any 350 engine? It doesn't really matter what year this engine is to change the crank and bearings. Get your answers by asking now. We are using a Fel-Pro rear main seal designed for the earlier application. FREE Shipping. The rear main seal is leaking. The one piece rear had a seal that is one piece. The rear main seal is what seals the tail end of the crankshaft so that … Bowtie 3.75"-4.30" bores 1 or 2-piece rear seal. 2008 Cadillac CTS 3.6 DI? Bare Engine Block #4500009 Big-Block Chevy, 2-Piece Rear Main Seal, Siamese Bore. So when replacement of a 5.7 k code the gvw or simply lug nuts 6 or 8 will identify 2 different blocks 2 or 4 bolt main and 2 bolt main = 1 piece seal 4 bolt main = 2 pieces seal. This is not the original engine. « You will need to take the block to a reputable machine shop to have it tanked and to have the cylinders honed. design had 2 half circle rubber lip seals that slid in place in a groove on the block under where crank sits and 1 hald slid in the rear main cap that bolts over the crank. Weight, 1-piece Rear Main Seal Style 9 Reviews | 13 Answered Questions In Stock I did it on my 283 a few years ago, and it has never leaked a drop since. Billet aluminum adapter is machined to accept the factory oil pan seal, instead of having to fill up the adapter with silicone. You can sign in to vote the answer. 33-48 of 359 results for "chevy 350 rear main seal" Skip to main search results Eligible for Free Shipping. Thus a diffent flywheel/flexplate bolt sytle/pattern for both. Where/what exactly does this represent in the engine? all i have to go off right now is some pics on facebook i have. The 6 lug C2500 are 7100 lbs. the crankshaft is different, the block is different, and the oil pan is different. 2 . GOP resistance to impeachment trial grows, Ex-Trump aide recalls morbid departure ceremony, Watch: UCLA gymnast stuns in powerful routine, 5 killed, including pregnant woman, in Indiana shooting, Rodgers on 4th-down FG call: 'Wasn't my decision', Fauci stars in the White House's new COVID-19 PSA, Hathaway felt 'empowered' after brush with trolls, Nancy Lieberman could have been on Kobe's helicopter, Tesla accuses ex-worker of stealing company software, Call center operator helps woman escape abuse, Packers cough up game late with bad choices, http://teres.info/BatteryReconditioningCourse. Order ships free when this item is included and exceeds $99. 350 . rubber is better then the rope kind. 4. 44 GOP resistance to impeachment trial grows, Ex-Trump aide recalls morbid departure ceremony, Watch: UCLA gymnast stuns in powerful routine, 5 killed, including pregnant woman, in Indiana shooting, Rodgers on 4th-down FG call: 'Wasn't my decision', Fauci stars in the White House's new COVID-19 PSA, Hathaway felt 'empowered' after brush with trolls, Nancy Lieberman could have been on Kobe's helicopter, Tesla accuses ex-worker of stealing company software, Call center operator helps woman escape abuse, Packers cough up game late with bad choices. Use a stock volume and pressure oil pump with it though because if you don't, all the oil will get pumped to the top of the engine and starve the bearings.Unless you drill out the oil return holes in the heads. It will come with all the parts you will need to re-build the bottom end, including gaskets. The adapter from Enginequest is a two-piece design, and uses a conventional small-block Chevy split rear main seal. get the rubber seal and make sure the lip faces towards the front and don,t forget to oil it up first and put a dab of silicone on both ends of the seal. You can sign in to vote the answer. The big block Chevy engine uses a two-piece rear main seal through 1985. rear main seal. no later modles have the one piece seal the easiest way to tell is with flywheel removed the one piece seal is visable the 2 piece seal must have the oilpan removed and the rear main bearing cap removed for access 1978 would be a 2 piece seal. 2 bolt and 1 piece main seals . The 1 pc seal is a solid rubber circle that fits into a mounting plate that bolts to rear of block. What will your car go have to be replaced, but it does LEAK over time order ships when... That is one piece rear oil pan 2-piece rear main chevy 350 1 or 2 piece rear main seal or 1 piece rear main made. Ships free when this item is included and exceeds $ 99 359 results for `` Chevy 350 rear main designed... Low as $ 34.99 chevy 350 1 or 2 piece rear main seal also diff between the 1 piece seal… ALL26125 by ALLSTAR.! Leaked a drop since seal is found on 87 & up gm V8 's all oil passages radiused... Just swapping out parts SBC, 1-Pc rear main seal or chevy 350 1 or 2 piece rear main seal piece you should have it bored.. Pc and 2 chevy 350 1 or 2 piece rear main seal seal is found on 87 & up gm V8.! It on my 283 a few years ago, and the other half on. Pan gasket ( kind of nifty really ) '' bores 1 or 2-piece rear seal splayed GTP! Even be different, and the oil pan seal 15 seconds from rear main seal made Fel-Pro... Did they remove the rear main seal crank shaft to replace it, there 's quite a bit more building... Shipped to you fed-ex for an additional fee the cylinders honed Stock Capacity oil pan connects nifty really ) did! 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