I was wondering what octane I would get away with running if I went with another set of L88 427 pistons just ones designed for the open chamber heads this time around.
Could I buy C12 and just mix it a little with 91 pump gas. If so what ratio.
These are the pistons I'm thinking of going with. Heads are 990 open.
Speed Pro TRW Chevy 427 ZL1 L88 COPO Forged Dome Coated Pistons Set 8 030" | eBay
or these if I want to run just pump gas alone
Speed Pro TRW Chevy 427 425 435 HP Forged Dome Coated Piston Set 8 11 1 1 030" | eBay