I have a small block 283 that has a set of heads stamped avoy b, what hp would those head be?
the engine has roller rockers, there is a pyramid design on the back of the head, just need to know what kind of head that is.
Maybe the data on this site will help you ------ http://www.mortec.com/castnum.htm
A picture would be helpful.
The casting number is needed to ID the heads.
8347041 k8 8 gm 8
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