Quote: I found a new set of the 12.5 TRW's .030 for my new 383. coupled with Muscle Motors stage 1 iron heads, I'm right at 10.5:1. A comp xe285-hl, rpm intake 1 3/4 headers and 4.10's. Should make my duster scoot.
Just my point, a piston thats rated at 12.5-1 in actuality measures 10.5... Farmington did getting the 10.5 require cutting down the domes or is that just a result of the larger then spec combustion chambers & likely taller then spec deck height??
