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I’ve been trying to gather as much info about this 455 engine I picked up the other day. From what I’ve gathered so far the casting number on the block is 396021F and it has no vin derivative stamp. It also has Ga heads. So with the info I’ve found so far I figured the block and heads were from 1972 and it was either used as a warranty engine or maybe motor home or marine use. The only thing I haven’t been able to identify at all is the intake. It’s a 4bbl intake with no EGR. There’s a big T on the #2 intake runner next to the firing order stamp. The casting number is 410350 with big Y on top and “D 1 F” below. Are there any other spots I should be looking for ID codes or numbers on the intake? Any info would be appreciated.
Not sure if this is the date code but there is a plate with 113 stamped next to the “clock” in the photo.
Anyways; I need to figure out what type of exhaust manifolds I got so I can decide whether or not I can reuse them when I do the engine swap into the caddy. I remember reading that apparently you can’t use toronado manifolds in RWD cars. But correct me if I’m wrong.
so far the numbers I got on the exhaust manifolds are as follows:
RH manifold: G (located at the #8 exhaust port) GM 395752 RH D1
LH manifold: 1 (located at #1 exhaust port) GM Y 380001 LH D6
There is a small plate on both manifolds. LH plate reads 42 but I can’t seem to read the plate on the RH manifold.
November 5th, 2023, 03:59 PM
