I have never seen a block without the BIG casting numbers near the bellhousing,but the other numbers near the altenator are often milled off when they deck the block during a rebuild,if its a factory short block it might have all zeros,or the suffix CE on it(stands for complete engine)Īs for the roller lifters,I asked all the chevy guru's I know,they all said what Tim said-pull the intake,its the only sure way to tell(I didnt because they didnt start the roller lifters till 87,I have an 86)-its like the 4 bolt mains,there are lots of things that might point to it being a 4 bolt(certain casting #,oil plugs near timing cover,etc)the only sure way is to pull the pan.ĭont be too dissapointed you got a 305 instead of a 350-another guy bought a "350" and had me install it in his truck-he thought it was awful doggy for a 350,so I looked up the engine code-turns out the impala he bought the motor out of had a swap before it hit the boneyard-it turned out to be a 267!! /forums/images/graemlins/tongue.gif /forums/images/graemlins/crazy.gif /forums/images/graemlins/screwy. Answer ID 633 Published 08:08 PM Updated 07:58 AM Attachments sbccastingblocks.pdf (13.55 KB) sbccastingheads.pdf (24. Chevy 302 'DZ' Z/28 block & NOS pistons - authentic - Jan 69 casting (Mesa) 7,500. Small Block Chevy Casting Numbers Small Block Chevy Casting Numbers Please see the attached charts to help figure out exactly what you have. 4L60E SB Chevy Bellhousing, casting number 24206952, from pickup truck (Granada Hills) 20. Chevy 283 Corvette 4 Barrel Intake Manifold Casting number 3746829 (Springwater) 75. Thats the trouble with small blocks-they all look the same-kinda like a vagina!-I had a friend that works at a boneyard ask me if I knew anyone with a 400 SBC for sale-I told him he had one lying on the ground near a 72 GMC pickup-he said "no way,thats the 307 POS out of that truck"-I told him he'd better go take a better look at the flywheel and damper!he looked and he was /forums/images/graemlins/blush.gif /forums/images/graemlins/blush.gif!.He ran that motor hard for 2 years,even after sitting on the ground all year in the rain it still survived!. Use these casting numbers to identify the exhaust manifolds you have. If you have heard that the new-style 235 gets better compression numbers with an 848 head and that’s important to you, look for those as the last three numbers of that casting number.
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