Ive got a 505” pump gas motor with solid flat tappet cam at 10.4 comp. at 3900 lbs, it runs 10.75 @ 127mph. Edelbrock rpm just cleaned up a bit with a victor intake and 1050. 4speed stickshift with 4.30 rear. Alot of fun and i do drive it all the time. Driven 200+ miles each way to Carlisle for show.