I bought my Roadrunner new after I got out of the Navy. Bone stock 383 4 speed 3.23 sure grip. It would not spin the tires on a roll. Playing with the timing didn't help. When I blew that 383 engine up while racing, I went to a 440. A 440 has been in my car ever since. It will light the tires up on a roll.


4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight