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Re: Decoding stamped number on my 454
I think the C means its out of a car. I had a that had some weird looking manifolds, thought it was from a car. Checked the numbers up front, started with a T, means a truck.
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2000 GMC CCSB 454/4L80 6” lift SAS
1999 Chevy CCSB 454/NV4500 4” SAS
1999 GMC Yukon 350/4L60 6" SAS
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