olds 455 engine id

10-21-2006, 06:50 PM
hey, i picked up a 455 olds rocket and i'm trying to find out what year the engine is and if there is a way to tell what type of car it came from. The number on the front of the block is 396021F. Any help is appreciated..thanx

10-22-2006, 10:46 PM
I know that casting was used from '68-'72.
Its pre '72, the compression should be 8.5 to 1 also.

was used in many cars.

11-20-2006, 08:24 AM
Here's a website with some info that you would probably like http://www.442.com/oldsfaq/ofe455.htm#E455%20455CIDEngineDetail.

11-06-2007, 09:15 PM
That should be a 455. If it's indeed a 306021F block it's a 68-72 block. But you need to look carefully as most you'll find will have a smaller A next to the F, these blocks were 73-76.
If you want to be sure of the car and exact year you'll need to check the vin on the side of the block. It's located just under the #1 cylinder plug hole on base of the block (where the head meets it)

11-07-2007, 08:18 AM
kevthemechanic, this thread is over a year old... :disappoin
Please dont bring up threads older then 3 months!!

Plus, you just repeated everything I said. :screwy:

Though, thanks for the insight, but this problem is surly resolved. this is closed!

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