The pistons appear to be .005 below the deck. They also have valve reliefs but i cannot be too sure how many cc's they are. I have no idea what the CC is on "J" heads vs my stock magnums anyway. My magnum heads already have the "R/T" springs and titanium retainers.

Anyway, I think the XE262 is too mild for this application. I'm running rather short tires of less than 26" with the 3.23 ring. I currently have a hotter cam (summit k6901) in my very low compression 360 and that has good enough street manners.

I'm thinking the XE268 would be as low as I would go. I might stick with the purpleshaft even. Its not really a daily driver car anyway.