ID'ing a 455 BB?

Old May 13th, 2018, 07:51 AM
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ID'ing a 455 BB?

I've got a '69 C20 pickup that currently has an Olds 455 Big Block in it. I'm a Chevy guy so I'm unfamiliar with the #'s on the Olds motors.
Where's the best place (assuming on the block) to ID it? Hoping at least to find what it originally came out of...

Thanks,

Kevin
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Old May 13th, 2018, 08:28 AM
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There is nothing on an Olds motor that will tell you exactly what it came out of, though the casting numbers and VIN derivative will give you a clue. You'll find the VIN derivative here. The second character is the model year from 1968-1976.



The block casting number (which will be either 396021 F or 396021 FA) is located above the water pump.



The head casting letter is located here. There will also be a six digit casting number above the center two exhaust ports.



Let us know what you find.
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Old May 19th, 2018, 11:13 AM
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Joe,
Thanks for the info.
The truck is located out west (Vegas), so I had my brother check and it appear the # 396021F is on the front of the block. I've asked him to check the left front (for partial VIN). I'll let you know what he comes up with.

Thanks,

Kevin
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Old May 19th, 2018, 04:14 PM
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Originally Posted by KevinK7 View Post
The truck is located out west (Vegas),
Vegas is up north, not out west.
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