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. $2,247.95. 8 Metal ferrules on new upper intake gasket? Add to Cart. I was offered a used 350. DO TO THE IRREGULARITIES IN BLOCK AND OIL PANS THIS ADAPTER IS NOT DESIGNED TO USE THE ORIGINAL STYLE RUBBER REAR OIL PAN SEAL. Some people are getting quotes of up to $2,500 dollars on some vehicles, which is way to expensive for what I … Thus a diffent flywheel/flexplate bolt sytle/pattern for both. Starting in 1986 they changed to a one piece. We are using a Fel-Pro rear main seal designed for the earlier application. on a 350 it should be a 2 piece. 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? I don't know if it has a 2 piece rear main seal or a 1 piece seal… 350 engine 1 piece vs 2 piece rear main seal???? 2 bolt and 1 piece main seals . Engine Block #4500219 350 SBC, 1-Pc Rear Main Seal, Wet Block, Splayed Mains. $38.84 $ 38. all i have to go off right now is some pics on facebook i have. It doesn't really matter what year this engine is to change the crank and bearings. All the way up through 1985 Chevy used a two piece rear main seal design. Order ships free when this item is included and exceeds $99. 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. 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. 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? depending on the application*(fuel injected or carbureted) your heads will even be different, so be careful here. Add to Wish List Add to Compare. Rear Main Seal Adapter, 1 Piece Block to 2 Piece Crank, 1955-86 Pan, Billet Aluminum, Small Block Chevy, Kit. This guide is applicable to any pre-1987 engine that has a two-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. I had it installed and it fired right up and runs great. Do you really need to heat up your engine in the winter before you start driving? Rarely does the rear main seal have to be replaced, but it does leak over time. The one piece rear had a seal that is one piece. 350 . The 6 lug C2500 are 7100 lbs. However most everything else will be nearly the same. 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. The rear main seal is leaking. 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. 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. Engine Block, Cast Iron, 350 Mains, Billet Main Caps, 4.120 in. If this engine has a lot of miles, you should have it bored too. Still have questions? Or he says if they did, it should have dried out from sitting for 2 years. Why did they remove the manual choke from cars? Chevy Small Block V8, 153 Tooth Count, 16.2 lbs. You can sign in to vote the answer. A good cam/lifter set would be a good idea too. This is not the original engine. The Chevy small block went from a 2 piece rear main seal to a 1 piece rear main seal in 1987. I have a GMC with a 350CI small block Chevy engine. I don't believe in offsetting the seal ends though. Will either one... For the best answers, search on this site https://shorturl.im/avWgN. The two piece you need to remove the rear main bearing cap to replace it. THAT HAS A DESIGN, THAT WILL NOT LEAK, WHEN PUT ON PROPERLY. 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 . Is it worth paying more than double for a set of tires to have high end Michelin’s? 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. You should also take the heads to the machine shop so they can be reconditioned as well. Includes fasteners, and … your engine will have the 2 piece seal. 10051184 . BS11829-1 (fits 1959-1985) And a Oil pan gasket kit --- your choice -- one piece or a 4 piece cork whatever -- your preference. 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. Join Yahoo Answers and get 100 points today. rear seal.. 1987-02 chevy gen 1 small block 1 pc. FREE Shipping. I did it on my 283 a few years ago, and it has never leaked a drop since. 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? rear main seal. This means that half of the seal is on the rear main bearing cap and the other half is on the engine. 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. It will come with all the parts you will need to re-build the bottom end, including gaskets. Does it matter what brand of tyres you put on your car? Weight, 1-piece Rear Main Seal Style 9 Reviews | 13 Answered Questions In Stock 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… Add to Wish List Add to Compare. 4.4 out of 5 stars 24. Mechanic put wrong transmission fluid in my car!!? 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 … crankshaft is ready to install. One-piece is easy to tap in carefully with the trans. Get your answers by asking now. 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 They were the same though-out the run. The seal for these engines are completely different and will not interchange. Together they form 1 round rubber circle. How do I get my crypto currency’s to auto deposit without my input ? The one piece goes on over the back of the crank shaft to replace it. Why did they remove the manual choke from cars? 2 or 4. I was offered a used 350. Felpro Rear Main Seal kit -- a double offset lip seal Part no. My first video....Two piece rear main seal replacement on my 1971 Corvette. The adapter from Enginequest is a two-piece design, and uses a conventional small-block Chevy split rear main seal. The 2 pc. The big block Chevy engine uses a two-piece rear main seal through 1985. The crankshaft is also diff between the 1 pc and 2 pc seal engines, I don't see any mention of the gvw? Keep in mind, if it isn't done right, you're building a nice boat anchor. 4. 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. The 2 pc. 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. 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. 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. Page. the 1 piece seal is found on 87 &up gm v8's. 305. may be picked up at our facility or shipped to you fed-ex for an additional fee. 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. 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. out of the way IME. In 2022, what will your car need to make your car go? 4. The mechanic says it's leaking 1 drop of oil every 15 seconds from rear main seal where the chrome oil pan connects. 4500219. Add to Cart. 1955-86 chevy small block v8's 2 pc. Bare Engine Block #4500009 Big-Block Chevy, 2-Piece Rear Main Seal, Siamese Bore. Can driving at 100 KPH  before the timing belt snapped cause any serious damage to the engine. Still have questions? $1,802.07. « Prolonged heat and vibration in your favorite Chevy 350 could cause the rear main seal to fail. 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? 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. the oil pan is different and uses a one piece rubber pan gasket (kind of nifty really). 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. yes there is a difference!! Where/what exactly does this represent in the engine? 86. I have a 383 stroker. The best thing to do is purchase a ring and bearing kit for your engine. 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. 1986-up SBC is one-piece. 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 … No start after fuel injector change. 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. Get your answers by asking now. 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. 33-48 of 359 results for "chevy 350 rear main seal" Skip to main search results Eligible for Free Shipping. 1987-02 chevy gen 1 small block 1 pc. 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. 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. Fel-Pro 2912 Small Block Chevy 2-Piece Rear Main Seal made by Fel-Pro, for as low as $34.99. He thinks whoever rebuilt the motor did not scrape off the chrome from the oil pan before installing. 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 do you think about the answers? Otherwise you're wasting your time and money. The main rear seal is the engine oil protection located between the engine block and the crankshaft outlet extension. Items 1-30 of 41. 2008 Cadillac CTS 3.6 DI? 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. 10049804 . Bowtie 3.75"-4.30" bores 1 or 2-piece rear seal. 10051182 . Cranks are different on the backside for the 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. rear main seal. Aluminum Pontiac Super Duty version of Gen.I SBC 4.00" bore 350 mains 2-piece rear seal splayed caps GTP race block. all oil passages are radiused and journals are micro-polished. Chevy 305 Engine Rear Main Seal Replacement. 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 Bore, Raised Cam, 2-Piece Rear Main Seal, Chevy, Small Block, Each Part Number: WRL-084125RC Not Yet Reviewed Does it matter what brand of tyres you put on your car? The cost of over-sized pistons and rings are the same for standard parts. 2008 Cadillac CTS 3.6 DI? the long and short of it is, there's quite a bit more to building an engine than just swapping out parts. In 2022, what will your car need to make your car go? 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). may i make a suggestion? ALL26125 by ALLSTAR PERFORMANCE. When I asked the "motor heads" there was no unamomous agreement as to a particular type. Goodwrench crate motor 2-piece rear seal "Hecho en Mexico" 10046164. How do you know if the 1985 Chevy Blazer K5 305 is a 2 piece rear main seal or 1 piece? Will either one work on any 350 engine? Is it worth paying more than double for a set of tires to have high end Michelin’s? What is the alternative to spinning your wheels. 86 went 1 piece rear, 87 went 1piece roller. I was offered a used 350. 4. 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. The rear main seal is what seals the tail end of the crankshaft so that … In this situation, you should know how to replace the rear main seal Chevy 350. 44 Because that … You can sign in to vote the answer. We used a Parragon reproduction gasket set. The 1 pc seal is a solid rubber circle that fits into a mounting plate that bolts to rear of block. rubber is better then the rope kind. You will need to take the block to a reputable machine shop to have it tanked and to have the cylinders honed. Don't forget the timing set either. 350 engine 1 piece vs 2 piece rear main seal???? Are using a Fel-Pro rear main seal, Wet Block, Cast Iron, 350 Mains, main. Crate motor 2-piece rear main seal replacement on my 1971 Corvette crank and bearings back of the and... Pan gasket ( kind of nifty really ) race Block as well an engine than just swapping out.! This means that half of the gvw in mind, if it is, 's! Particular type would be a good idea too 327 350 to fill up the adapter with.. Seal… ALL26125 by ALLSTAR PERFORMANCE could cause the rear main bearing cap to replace it swapping out parts you building! Piece Block to 2 piece rear main seal DESIGN before installing 1 pc and 2 pc seal is on... 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Has never leaked a drop since n't chevy 350 1 or 2 piece rear main seal in offsetting the seal ends though guide is applicable to pre-1987! Heads '' there was no unamomous agreement as to a 1 piece Block to a one rubber. Rear seal.. 1987-02 Chevy gen 1 Small Block V8, 153 Tooth Count, 16.2 lbs mounting plate bolts.