The camshaft is a comp 6329 solid 252@.050 about .580 lift with a 1.6 rocker.

What is the down side to locking out the distributor?
My distributor adds 24* of mechancial advance, so the motor likes at least 20 degrees at idle so that was pushing me over 40, so we made the decision to just lock it out.

So the plug heat range seems ok to everyone and i just need to come down on the timing?

'75 Plymouth Duster
Phase I 451 906/590/2-660 10.75/126
Phase II 451 Stage VI/590/1050 9.82/135
Phase III 383 906/Victor-Pump gas 11.30/119

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