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  1. Desmoben1

    Here’s one for the tuners...

    My 172 engine rebuild as follows: Forged 9.5 or 8.5 - 1 pistons and rods(depending on availability) lightened flywheel, paddle clutch, ported head and inlet. ED turbo kit PMS race exhaust - no cat. ....and here is my question. I’ve bought 197 cams and a gpN 8degree advance timing tool...