Quote:
Originally Posted by Steve C.
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Lee is the one who ran the dyno sims for me. And he did need the intake closing info, and head flow etc. Funny that after multiple testing, the cam he came up with for a low CR/pump gas cam for towing is the same cam, same lobes apparently but on a much wider LSA with a little less lift. For around 8.0:1 CR, the torque was the best, vacuum was the best. Even those just simulations, there should be some value as far as comparison, especially when the simulation runs close to what real life has shown. He ran at least 15 different sims, maybe more, making adjustments in LSA, advance, difference between 1.5 and 1.65 rockers on each one. Some had a little higher peak torque/HP, but this one had about the highest torque at low rpm, and held it a little longer
Lee said his program was not necessarily 100% accurate (of course), but all the cams he has actually real life dyno tested came in close to projections, within a narrow range.
I thought the original post was specifically asking about towing, low CR and lower octane fuel. So any cam that peaked out above around 5500 rpm wasn't in consideration.