i just had a th350 built made one pass started to slip in high gear so i thought took it back to track a week later did a burnout 6000 in high gear gear no smoke so i made a pass anyway shifted into 2nd rev limiter then it grabed and stated to pull shifted to 3rd felt like it was going in and out of gear could it possibly be the rear end i dont think so but who knows thanks guys car ran 11.06@119 first pass