After looking at the 1/8 to 1/4 conversionn chart an 8.52 in the eights is pretty good. That equates to a 13.26. My 65 Coupe ran a best NA ever of a 12.82 with the TFS heads, Edel dual plane, and 750 CFM carb. Power steering, power brakes, 8.5 inch slicks. Leaving at 2500, lift on the shift, and shift at around 5400. BTW is the intake a dual or single plane? The rest of the Coupe specs are on my home page(if you are interested) too long too list. With the N2O it ran a 12.04...
Ron
www.rfedd.bigstep.com