Dylan, If you don't have a tach, how do you know that it is wound out at 40? Any 3 speed you get will be 1 to 1 in 3rd gear. They would run 70 all day long with 4.11 and 3.90 back in their day. It will certainly run 70 with 3.73. Is the noise getting so loud that it scares you? If so, thats the way they are. Get used to it. If the motor won,t run any faster, you have it timed too late, or you are not getting enough gas. 3.08 will cause a 235 to be a real dog at the low end.
Last edited by crenwelge; 03/26/2015 4:41 PM.
