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06-05-08, 01:04 PM
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Chevy 350 Compression Ratio question
I'm trying to figure-out what static CR to aim for when I replace the existing top-end on my engine. From what I've read, I should aim for a dynamic CR of max 8.2:1. This is assuming I'll be using Super Unleaded (equiv. to 93 Octane US). With my Performer RPM cam (intake timing @ 44* ABDC), that would mean a static CR of 9.1:1. However, Edelbrock's Performer RPM crate engine runs a static CR of 9.5:1 using the same cam, which would yield a dynamic CR of 8.6:1, according to this calculator:
Wallace Racing: Dynamic Compression Ratio Calculator I'm confused... can someone clarify for me? Cheers, Ian.
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2003 DAX Tojeiro De Dion     
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06-05-08, 01:13 PM
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Have a look at Llyods post below:
"Help! Heads/Manifold Coolant ports" This model may help with your question as well James
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Megasquirted 383 SBC built but yet to start. Dax De Dion chassis safelty in garage. Permission to spend money in March - rolling chassis here we come
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