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Originally Posted by MetalHead175
That's not a bad idea, but I will cruise the car as much as I can. How much would I have to dish the pistons to get it into 91 octane pump gas range?
-Jason
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About 25 to 30ccs, 30 being best. Getting a 455 under 10:1 with 72-75cc heads takes a deep dish in the piston, custom Ross pistons can be made with the big dish.