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Old 04-27-2007, 01:26 PM
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Dynamic Compression Ratio??

Having searched and found the calculations for both static and dynamic compression ratio, I see how the choices I make will affect compression ratio. I still would like to know (in general terms) what is the target number for dynamic compression ratio?Based on what I've seen there is a wide range of claims being made on what static compression ratio you can run on xx octane, but the real measure is dynamic compression ratio. I've been around for a while and know in general what is too much static compression ratio, but how do I correlate static numbers to dynamic numbers?
For my application I am building a bbc for street performance use, I will run a stock TH400 with 3.73 gears in a 3600lb car.

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Old 04-27-2007, 01:46 PM
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Maybe this will help, most of these guys are members over at Chevy Talk and are pretty reliable.

DCR Combinations
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Old 04-27-2007, 02:07 PM
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When I did my research, I made notes as follows for DCR:
Street cars: 7.5 to 8.5 (under 8.25 is the best if you want to run pump gas)
Strip cars: 8.8 to 9.0 (high octane)
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Old 04-27-2007, 02:22 PM
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Thanks for the replys. I'm in the planning/purchasing stages and I want to know that once I make my head and piston choices I can live with them.
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