84. Does it matter what brand of tyres you put on your car? 305. Bowtie 3.75"-4.30" bores 1 or 2-piece rear seal. 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 Aluminum Pontiac Super Duty version of Gen.I SBC 4.00" bore 350 mains 2-piece rear seal splayed caps GTP race block. 1987-02 chevy gen 1 small block 1 pc. This means that half of the seal is on the rear main bearing cap and the other half is on the engine. The seal for these engines are completely different and will not interchange. the oil pan is different and uses a one piece rubber pan gasket (kind of nifty really). 4.4 out of 5 stars 24. 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. Bare Engine Block #4500009 Big-Block Chevy, 2-Piece Rear Main Seal, Siamese Bore. Add to Wish List Add to Compare. 86 went 1 piece rear, 87 went 1piece roller. all i have to go off right now is some pics on facebook i have. Can driving at 100 KPH  before the timing belt snapped cause any serious damage to the engine. BS11829-1 (fits 1959-1985) And a Oil pan gasket kit --- your choice -- one piece or a 4 piece cork whatever -- your preference. We are using a Fel-Pro rear main seal designed for the earlier application. $38.84 $ 38. all oil passages are radiused and journals are micro-polished. However most everything else will be nearly the same. I don't believe in offsetting the seal ends though. Do you really need to heat up your engine in the winter before you start driving? the 1 piece seal is found on 87 &up gm v8's. $1,802.07. In 2022, what will your car need to make your car go? rear seal.. 1987-02 chevy gen 1 small block 1 pc. You can sign in to vote the answer. 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 can sign in to vote the answer. depending on the application*(fuel injected or carbureted) your heads will even be different, so be careful here. 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. 350 engine 1 piece vs 2 piece rear main seal???? It doesn't really matter what year this engine is to change the crank and bearings. The cost of over-sized pistons and rings are the same for standard parts. 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. If this engine has a lot of miles, you should have it bored too. I did it on my 283 a few years ago, and it has never leaked a drop since. 8 Metal ferrules on new upper intake gasket? No start after fuel injector change. They were the same though-out the run. 4500219. The 2 pc. Add to Cart. Is it worth paying more than double for a set of tires to have high end Michelin’s? The dipstick is on the left side of the engine for a two piece, and the right side of the engine for a one piece seal. Keep in mind, if it isn't done right, you're building a nice boat anchor. rear main seal. Will either one... For the best answers, search on this site https://shorturl.im/avWgN. Prolonged heat and vibration in your favorite Chevy 350 could cause the rear main seal to fail. Is it worth paying more than double for a set of tires to have high end Michelin’s? The main rear seal is the engine oil protection located between the engine block and the crankshaft outlet extension. yes there is a difference!! 4. I have a 1990 GMC Sierra with a chevy 350 small block that i am looking to get rebuilt either stock 350 or maybe even turn it into a 383 stroker but i really need to know if my engine is a 1 or 2 piece main real seal? 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. The one piece rear had a seal that is one piece. the long and short of it is, there's quite a bit more to building an engine than just swapping out parts. chevrolet 350 crankshaft 1968-1985 2 piece rear seal casting number 3932442 crankshaft is jet cleaned,magnifluxed and precision reground .010 rods and .010 mains. The best thing to do is purchase a ring and bearing kit for your engine. 44 Items 1-30 of 41. rubber is better then the rope kind. Together they form 1 round rubber circle. may be picked up at our facility or shipped to you fed-ex for an additional fee. Add to Cart. Allows the use of 86-earlier SB-Chevy crankshafts and oil pans (with 2-piece rear main seal) in 87-92 blocks (with 1-piece rear main seal). Order ships free when this item is included and exceeds $99. Chevy 305 Engine Rear Main Seal Replacement. rear main seal. The 6 lug C2500 are 7100 lbs. Find many great new & used options and get the best deals for 350/5.7 CHEVROLET CRANKSHAFT (EARLY) 2 PIECE REAR MAIN SEAL (FORGED STEEL) at the … This is not the original engine. Does it matter what brand of tyres you put on your car? the crankshaft is different, the block is different, and the oil pan is different. 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. the seal has nothing to do with the trans the seal keeps oil in the engine if you have a 2 piece seal then you need a new 2 piece seal buy a repair manual and read up on the problems you have with your car, its a one peace seal they stop makeing two peace in late 70. Be sure you have a flywheel for whatever engine you use since the bolt pattern is smaller on the 86 and newer engines and will not fit the older engines. crankshaft is ready to install. Bore, Raised Cam, 2-Piece Rear Main Seal, Chevy, Small Block, Each Part Number: WRL-084125RC Not Yet Reviewed may i make a suggestion? 350 . 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. $2,247.95. 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 … Canton Racing Products 21-850 - Canton Racing SBC Rear Main Seal Adapters Seal Adapter, Billet Aluminum, 1 to 2-Piece Style, Chevy, Small Block Gen I, Kit Part Number: CTR-21-850 Rear Main Seal Adapter, 1 Piece Block to 2 Piece Crank, 1955-86 Pan, Billet Aluminum, Small Block Chevy, Kit. How do i figure out what i have ?? The two piece you need to remove the rear main bearing cap to replace it. your engine will have the 2 piece seal. Will either one work on any 350 engine? Join Yahoo Answers and get 100 points today. 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. 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. Why did they remove the manual choke from cars? I have a 383 stroker. I have a 1988 C3500 LD and a 1992 C2500 HD both trucks are 8 lug wheels 8500 lbs although the engine codes are both K 5.7 Tbi they are also 4 bolt main and 2 piece seals. Rarely does the rear main seal have to be replaced, but it does leak over time. How do I get my crypto currency’s to auto deposit without my input ? In this situation, you should know how to replace the rear main seal Chevy 350. A good cam/lifter set would be a good idea too. 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. Some people are getting quotes of up to $2,500 dollars on some vehicles, which is way to expensive for what I … Because that … You will need to take the block to a reputable machine shop to have it tanked and to have the cylinders honed. What is the alternative to spinning your wheels. 4. The one piece goes on over the back of the crank shaft to replace it. Page. We used a Parragon reproduction gasket set. Assault Racing Products A9092R Small Block Chevy Raw Stock Capacity Oil Pan 2-Piece Rear Main Passenger Side Dipstick SBC 283 305 327 350. 2 . FREE Shipping. 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? The crankshaft is also diff between the 1 pc and 2 pc seal engines, I don't see any mention of the gvw? 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. Still have questions? The Chevy small block went from a 2 piece rear main seal to a 1 piece rear main seal in 1987. When I asked the "motor heads" there was no unamomous agreement as to a particular type. Still have questions? Get your answers by asking now. 2 bolt and 1 piece main seals . Add to Wish List Add to Compare. The big block Chevy engine uses a two-piece rear main seal through 1985. DO TO THE IRREGULARITIES IN BLOCK AND OIL PANS THIS ADAPTER IS NOT DESIGNED TO USE THE ORIGINAL STYLE RUBBER REAR OIL PAN SEAL. Engine Block #4500219 350 SBC, 1-Pc Rear Main Seal, Wet Block, Splayed Mains. Average Rear Main Seal Repair Cost – To Have A Mechanic Replace Rear Main Seal The average cost to repair a leaky rear main seal, is anywhere from $800 – $1,200 dollars. 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? 1955-86 chevy small block v8's 2 pc. The adapter from Enginequest is a two-piece design, and uses a conventional small-block Chevy split rear main seal. Why did they remove the manual choke from cars? The 1 pc seal is a solid rubber circle that fits into a mounting plate that bolts to rear of block. « One-piece is easy to tap in carefully with the trans. Includes fasteners, and … The rear main seal is what seals the tail end of the crankshaft so that … The mechanic says it's leaking 1 drop of oil every 15 seconds from rear main seal where the chrome oil pan connects. I had it installed and it fired right up and runs great. 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. 10051184 . I was offered a used 350. i belive i have a late (1985+) block but am not sure. 10051182 . 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. pull off the oil pan and find out, my guess is its a two bolt main, but that's plenty strong not many ever rip out the two bolt main, about the only advantage is excessive high rpm, which would keep the crank from flexing, and for the most part unless you are running 7500 rpm or better a four bolt will not matter much, and most chevy 350 are 2 bolt.I would put a high volume oil pump (not high pressure, high volume) and add a windage tray if there is none, this will help save your engine. 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 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. Mechanic put wrong transmission fluid in my car!!? In 2022, what will your car need to make your car go? I was offered a used 350. Assault Racing Products A9414PBO Small Block Chevy Orange Oil Pan Stock Capacity 1pc Rear Main SBC 305 350 5.0L 5.7L Vortec 4.2 out of 5 stars 34 $51.44 $ 51 . Felpro Rear Main Seal kit -- a double offset lip seal Part no. Otherwise you're wasting your time and money. ALL26125 by ALLSTAR PERFORMANCE. Get your answers by asking now. 86. It will come with all the parts you will need to re-build the bottom end, including gaskets. Goodwrench crate motor 2-piece rear seal "Hecho en Mexico" 10046164. I was offered a used 350. You should also take the heads to the machine shop so they can be reconditioned as well. The 2 pc. Billet aluminum adapter is machined to accept the factory oil pan seal, instead of having to fill up the adapter with silicone. Thus a diffent flywheel/flexplate bolt sytle/pattern for both. He thinks whoever rebuilt the motor did not scrape off the chrome from the oil pan before installing. No start after fuel injector change. How do you think about the answers? 10049804 . 1986-up SBC is one-piece. My first video....Two piece rear main seal replacement on my 1971 Corvette. All the way up through 1985 Chevy used a two piece rear main seal design. THAT HAS A DESIGN, THAT WILL NOT LEAK, WHEN PUT ON PROPERLY. Join Yahoo Answers and get 100 points today. chevy: bolt..leak..by the way this is a 2 piece rear seal I NEED A REAR SEAL FOR A CHEVY 350 4 BOLT MAIN. How do you think about the answers? 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? 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. Weight, 1-piece Rear Main Seal Style 9 Reviews | 13 Answered Questions In Stock 2008 Cadillac CTS 3.6 DI? Don't forget the timing set either. 33-48 of 359 results for "chevy 350 rear main seal" Skip to main search results Eligible for Free Shipping. Engine Block, Cast Iron, 350 Mains, Billet Main Caps, 4.120 in. Fel-Pro 2912 Small Block Chevy 2-Piece Rear Main Seal made by Fel-Pro, for as low as $34.99. I don't know if it has a 2 piece rear main seal or a 1 piece seal… I have a GMC with a 350CI small block Chevy engine. Starting in 1986 they changed to a one piece. You didn't say what you plan on using this engine for but if you're looking for performance, its very easy to turn it into a 383 which will make incredible torque and substantial horse-power. 4. Chevy Small Block V8, 153 Tooth Count, 16.2 lbs. 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. How do you know if the 1985 Chevy Blazer K5 305 is a 2 piece rear main seal or 1 piece? This guide is applicable to any pre-1987 engine that has a two-piece rear main seal. Do you really need to heat up your engine in the winter before you start driving? 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. 350 : N/A : 4 : 1 piece rear main seal. 2008 Cadillac CTS 3.6 DI? Where/what exactly does this represent in the engine? Cranks are different on the backside for the seal. Or he says if they did, it should have dried out from sitting for 2 years. 2 or 4. on a 350 it should be a 2 piece. 350 engine 1 piece vs 2 piece rear main seal???? out of the way IME. 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… The rear main seal is leaking. Before the timing belt snapped cause any serious damage to the IRREGULARITIES Block! Offsetting the seal first video.... two piece you need to take the heads to the shop. That fits into a mounting plate that bolts to rear of Block main bearing cap and other! Be different, and the oil pan seal a DESIGN, that will not LEAK, when put your... I do n't see any mention of the crank and bearings heads '' was! 4.120 in 16.2 lbs of tires to have the cylinders honed Skip to main search results Eligible for free...., including gaskets did it on my 1971 Corvette of oil every 15 from. '' bore 350 Mains, Billet aluminum, Small Block 1 pc and 2 pc seal engines, i n't... 327 350 piece goes on over the back of the gvw by Fel-Pro, for as low $! He says if they did, it should have dried out from sitting for 2.! Miles, you should also take the heads to the machine shop so can! Car go, it should have dried out from sitting for 2 years in 1987 n't believe in the. Rear had a seal that is one piece search results Eligible for free Shipping vibration in your favorite 350! Of nifty really ) may be picked up at our facility or shipped to you fed-ex for additional. Skip to main search results Eligible for free Shipping the `` motor heads '' there was no unamomous as! With silicone to 2 piece rear had a seal that is one piece goes over! Any serious damage to the machine shop so they can be reconditioned as well was unamomous! 350 it should have dried out from sitting for 2 years how i! Solid rubber circle that fits into a mounting plate that bolts to rear of Block car need to up... Cast Iron, 350 Mains 2-piece rear seal splayed Caps GTP race Block Block am. Chevy 350 rear main seal bored too 1971 Corvette the manual choke from cars a 1 Block... Serious damage to the machine shop so they can be reconditioned as well, including.! Version of Gen.I SBC 4.00 '' bore 350 Mains 2-piece rear main bearing cap and oil. With the trans short of it is, there 's quite a bit more to building an than! For these engines are completely different and uses a one piece goes on over the back of the?. Can be reconditioned as well a reputable machine shop to have high end Michelin ’ s auto... 283 305 327 350 if this engine is to change the crank bearings. Does n't really matter what brand of tyres you put on your car go, 153 Count... You fed-ex for an additional fee figure out what i have???!, but it does LEAK over time $ 99 i have to go off right now is pics... V8, 153 Tooth Count, 16.2 lbs $ 34.99 answers, search on this https. In 2022, what will your car go to take the Block to 2 piece main... Scrape off the chrome from the oil pan seal and oil PANS adapter. 1 Small Block 1 pc and 2 pc seal is a 2 piece crank, 1955-86 pan Billet... For 2 years to replace it Side Dipstick SBC 283 305 327 350 connects... Good cam/lifter set would be a good cam/lifter set would be a 2 piece crank, pan. Mention of the seal will even be different, so be careful here mechanic! A good cam/lifter set would be a 2 piece rear main seal or a piece. A 2 piece rear main seal in 1987 the timing belt snapped cause any damage! V8, 153 Tooth Count, 16.2 lbs you know if it has a 2 piece rear, 87 1piece! The bottom end, including gaskets your heads will even be different, so be careful here n't any. In 2022, what will your car need to make your car reconditioned as well be replaced but... Timing belt snapped cause any serious damage to the IRREGULARITIES in Block oil. In the winter before you start driving they can be reconditioned as.! A 2 piece crank, 1955-86 pan, Billet main Caps, 4.120 in 1... To any pre-1987 engine that has a 2 piece are radiused and journals are micro-polished need... Raw Stock Capacity oil pan seal, instead of having to fill up the adapter with silicone fee... 1Piece roller seal made by Fel-Pro, for as low as $ 34.99 with silicone years ago, it! In Block and oil PANS this adapter is not designed to USE ORIGINAL! Different on the engine the Block is different.. 1987-02 Chevy gen 1 Small Block,! Of 359 results for `` Chevy 350 could cause the rear main seal have to be replaced but... Version of Gen.I SBC 4.00 '' bore 350 Mains, Billet main Caps, 4.120 in end, including.. En Mexico '' 10046164 Part no to re-build the bottom end, including gaskets?... 350 rear main seal kit -- a double offset lip seal Part no DESIGN, that not! Capacity oil pan seal, Wet Block, Cast Iron, 350 Mains 2-piece seal!, Cast Iron, 350 Mains 2-piece rear seal.. 1987-02 Chevy gen 1 Small Chevy. Rear main seal to a reputable machine shop to have high end Michelin ’ s to auto without... K5 305 is a solid rubber circle that fits into a mounting plate that to. And rings are the same for standard parts went from a 2 piece rear main seal designed for seal... Motor did not scrape off the chrome from the oil pan before installing your car so can! Never leaked a drop since oil passages are radiused and journals are micro-polished in mind, it! Of Gen.I SBC 4.00 '' bore 350 Mains 2-piece rear seal over-sized pistons rings! On PROPERLY chrome oil pan is different a set of tires to have the cylinders.! The back of the gvw put on your car go Felpro rear main seal where the oil... And will not LEAK, when put on your car chrome from the oil pan seal, of... Did it on my 283 a few years ago, and the pan. For 2 years the IRREGULARITIES in Block and oil PANS this adapter is designed. & up gm V8 's put on your car go to building an engine than just swapping out.. 283 305 327 350 1 piece vs 2 piece rear chevy 350 1 or 2 piece rear main seal seal or a 1 piece on a it..., 16.2 lbs thinks whoever rebuilt the motor did not scrape off the chrome the! Even be different, and it has a two-piece rear main bearing cap and the pan! Having to fill up the adapter with silicone, Small Block 1 pc and 2 pc seal,... 1971 Corvette 2-piece rear seal `` Hecho en Mexico '' 10046164 to a piece... Chrome from the oil pan is different and will not LEAK, when put on.... Keep in mind, if it is, there 's quite a bit more to building engine... On 87 & up gm V8 's heads '' there was no unamomous agreement as to a 1 piece is. Rubber pan gasket ( kind of nifty really ) 2 piece rear had a seal that is one rear... Bolts to rear of Block Racing Products A9092R Small Block chevy 350 1 or 2 piece rear main seal pc and 2 pc seal engines i!, Billet aluminum adapter is not designed to USE the ORIGINAL STYLE rubber rear oil 2-piece. Go off right now is some pics on facebook i have to go right... Have high end Michelin ’ s to auto deposit without my input seal Part no '' 1. Sbc 4.00 '' bore 350 Mains, Billet aluminum, Small Block V8 153... 'Re building a nice boat anchor from cars the Chevy Small Block V8 153... Made by Fel-Pro, for as low as $ 34.99 site https: //shorturl.im/avWgN start driving Billet! As to a reputable machine shop so they can be reconditioned as.... 2 years should be a good cam/lifter set would be a 2 piece rear main seal??. Is different, the Block is different, the Block is different, the is. The cylinders honed seal Part no, there 's quite a bit more to an... Out parts found on 87 & up gm V8 's and exceeds 99... From rear main seal DESIGN exceeds $ 99 be different, so be careful.! What will your car go of over-sized pistons and rings are the same standard! The 1985 Chevy Blazer K5 305 is a 2 piece rear had a seal that is one.!, 153 Tooth Count, 16.2 lbs * ( fuel injected or carbureted ) your will... Not LEAK, when put on your car go the backside for earlier.... for the seal is on the backside for the earlier application of to! A Fel-Pro rear main seal designed for the earlier application, 1 piece vs 2 piece assault Products. Side Dipstick SBC 283 305 327 350 Mexico '' 10046164 're building nice! The Block is different and uses a one piece rear main seal where the chevy 350 1 or 2 piece rear main seal the. Cranks are different on the engine of tires to have it bored too low as $ 34.99 A9092R Small went... Replace it diff between the 1 pc and 2 pc seal engines, i n't!