What is the highest compression you can go to on a Raptor with 95 pump gas?How about 98 pump gas?
No rush,just curious...

 

I'd say 11:1 with 98 octane.

 

Thanks.

 

id say 10-1 to 10-5-1 before det occors , my drag car has 12-5-1 and with vp 100 octane it will ping at idle. (how did i find out) sent a buddy to the gas shack to get me gas as soon as it ran for a couple of seconds i could hear it pingin, i have to use a min of 110 oct like cam 2 just my 2 cents