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Old 04-22-2012, 04:01 PM
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compression ratios

can anyone tell me If I would notice any difference / what hp gains I can expect to see stepping up the compression ratio on my mild 350 chevy from 8.8.1 to 9.6.1CR ?

cheers

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Old 04-22-2012, 05:56 PM
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Quote:
Originally Posted by swompz
can anyone tell me If I would notice any difference / what hp gains I can expect to see stepping up the compression ratio on my mild 350 chevy from 8.8.1 to 9.6.1CR ?

cheers
If this is to be run on pump fuel you would be wise to compute the dynamic compression ratio using the new CR to be sure the octane requirements aren't excessive.
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Old 04-22-2012, 06:01 PM
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I was going to use rhs pro torker 67cc heads 12402,s so stock/ mild performance which would give me the 9.6.1 , but ive been offered a set of stock 76cc heads for. Third of the money, so weighing up best bang per buck option, still trying to keep in 300hp zone on. 350+40 bore with performer manifold & cam/ headers etc.
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Old 04-23-2012, 01:28 AM
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It's a case of whats available to me hear in UK at sensible money, Which is slim pickings compared to you guys.
Mostly it's stock later model heads or a thin selection of performance heads
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