IQ52 said

Well your heads can use a cam as big as 278/280 and .700/.700 which I have personally run on 91 octane and 11.5:1. Can't say how long the lifters will last with those spring pressures but it will need the $800-$1000 ones.

If you want to stay around 400-440# over the nose you can run a lesser expensive lifter ($450-600) for a long time and a roller cam 250/250, .600/.600.......but your heads are better than that.

Compromise, compromise, compromise.

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