What is the sound of one piston slapping?
What is the sound of one piston slapping?

So as mentioned my engine is going to need bored out, and new pistons to go with it. I have it narrowed down to ordering some nice higher compression pistons to rectify one of the Olds’ biggest problem of a 7.9:1 CR. Might as well since I am spending the money. The question is that only one part number is listed, but two compression ratios. How do I determine what I am actually getting as well as what to order?

https://www.uempistons.com/index.php?main_page=product_piston_info&cPath=3_4_23&products_id=2875&zenid=f8345ff3befce673401df184b2b7df65

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Of specific mention: listed is both 83CC as well as 96CC, with matching expected CR. I would love to go to 9.5:1 but have no idea how to achieve that. I would like to order these so I can get the ball rolling.

Illustration for article titled Engine Oppos: need clarification
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Trans am convertible for your time.

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