Re: 3 Engines 155HP
Basically as I have read, prior to 72 engines were rated gross HP with no accessories, headers even a electric water pump. The way they dyno engines these days. After 72 it was still on a dyno, but with full exhaust and accessories. For example per the GM documentation on a 69 350, it is listed as 255 @ 4600 gross and 195 @ 4000 net
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Terry
1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC
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