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Old 10-19-2019, 07:20 PM   #2
b454rat
Senior Member
 
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,099
Re: Specs on 75 454.

You might be able to tell from the casting numbers, but most of the time it will say 2 or 4 bolt. I had many a 454 out of 3/4 and 1 ton trucks, every one a 2 bolt. But they can still be built up and are still strong. Should have some good heads on it, either 049 or 781s.
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