Have not been around here for a while but need some input on this. I have 49 half ton with '57 car motor, dual two bbl, dual exhaust and have just changed my diff to 355 with the kit from Patricks... I feel the extra speed potential but not sure just how fast I should go w/o over revving the motor. I don't have the speedo correction gear yet but I know I'm going about 6mph faster than it reads at 50 mph.
So what do you all think my max cruising speed should be kept at or below ?
