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Did a comparison last night between the 267 and the 283 w/ 601 305 heads, using the same camshaft and equal Dynamic Compression. The 267 best the 283 by 1/2 mpg but the 283 had 60 more HP at 5500. 😕 The 283 had a lot less horsepower loss than the 267 did.
Where can I find formulas for calculating (approximating) torque at a given rpm using average chamber pressure ???
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