i can tell you what i got out of my 340 with 11:4 compression mahle pistons and a smallish cam 390hp 425 tq a very mild build , nothing radical , easy going street car , I USED AN AVENGER 670 ,was enough for the car ran well ran a best of 13.1 with me , a tortoise . with a good racer and tires probably get in the 12's
GOOD LUCK
