compression with 274cam

Thrashard340 said

Is this going to be your daily driver? If so, better just to stay with the 91. How much do you plan to spend on octane booster on a consistent basis?

Comp Cams website doesn't stipulate a minimum CR requirement for that cam, you can run 9.5 on 91 with an XE274.

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I agree with Thrashard340 build it to run on pump gas, you'll be alot better off. Use all that money you'd be throwing away on octane booster on more car parts. 91 octane is expensive enough especially here in California, let alone having to buy octane booster every time you need gas.