Parts ID

Gary Lagacy · 10-28-2007, 03:38 PM

I am rebuilding a 1976???? small block 350 However I think this engine has been rebuilt before and parts were intermixed. I have the following castings #. Does anyone know the year of each componet

Block 557752-3B 350 X on side of block

Head 3A 554 GM4

Cam 401346

Crank 556607

don71 · 10-28-2007, 05:53 PM

You have a 77-80 block, head, and crankshaft probably NOT 76. I can't help with the cam number.

Check your block vin stamping. The first digit will be a 3 it indicates oldsmobile.I believe the second digit is the year. the 3rd will be a letter which is the assembly plant, the remaining numbers will be the serial number of the vehicle in which the engine came from.

http://i122.photobucket.com/albums/o...es/Head_ID.jpg

10-28-2007, 03:38 PM	#1 (permalink)
Gary Lagacy Junior Member Join Date: Oct 2007 Posts: 7	Parts ID I am rebuilding a 1976???? small block 350 However I think this engine has been rebuilt before and parts were intermixed. I have the following castings #. Does anyone know the year of each componet Block 557752-3B 350 X on side of block Head 3A 554 GM4 Cam 401346 Crank 556607

10-28-2007, 05:53 PM	#2 (permalink)
don71 feed the pig Join Date: Jun 2007 Location: Central Missouri Posts: 178	You have a 77-80 block, head, and crankshaft probably NOT 76. I can't help with the cam number. Check your block vin stamping. The first digit will be a 3 it indicates oldsmobile.I believe the second digit is the year. the 3rd will be a letter which is the assembly plant, the remaining numbers will be the serial number of the vehicle in which the engine came from. http://i122.photobucket.com/albums/o...es/Head_ID.jpg __________________ 1971 Cutlass S 455/th400 3.23 rear.

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