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PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > How far in the hole are stock pistons?
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Old 12-13-2025, 01:34 PM
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slowbird slowbird is offline
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Originally Posted by "QUICK-SILVER" View Post
Think you need to look at compression figured from stroke at intake valve close on these engines.

Clay
Dynamic compression I assume you're talking about?

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Old 12-13-2025, 02:08 PM
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Jay S Jay S is offline
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Dynamic compression I assume you're talking about?
Modern engines have VVT, with VVT Dynamic compression is a range for the load, RPM and what ever sensor data is used to change it. Knock sensors..ect…

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