Chevelle Tech - View Single Post - Help identifying these pistons if possible
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post #12 of (permalink) Old Jul 19th, 19, 7:23 PM
sleeper
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Join Date: Aug 2005
Location: KY
Posts: 918
Re: Help identifying these pistons if possible

Quote:
Originally Posted by Mike View Post
Looks like a 71 w/Sp. H/Per. (454) standard bore
Is there any code on the front stamp pad?
That is what the pistons are. GM rated the 71 LS6 at 425 hp with the 074 heads. They had app. 118 cc. and the compression ratio was 9 to 1. The 188 will have a couple more cc. I would think your compression will be in the 8.6 -8.8 range.
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