Last friday I went to the local 1/4mi track in my 86IROC , about 95mi's away, and couldn't get the trans to shift when I need it to. I shifted to third at about 5000rpm and the thing stayed in second till about 5300rpm, right at the lights. Needless to say it slowed me down. With a bad 60ft time of 2.552, wheel spin was a major problem too. I wasn't able to get the kind of burnout I wanted so it never hooked at the line. My best run was a 15.984, I know it's capable of better times, how much better, I don't know, I just know it could be better. The car is vertually stock with the exception of some free mods and has, I think, a 2.73 peg leg rear end. I was using my hoosier road race tires that I normaly auto-x with. If I can get the left rear tire to spin in the water then the right rear to spin as I power brake it, it hooks pretty good off the line, but I could not get it just right friday nite. Oh well, Just help me get it to shift when I want it to and I'll get it to hook on the line. Should I go heavier or lighter on the govener weights?

Thanks for any help anyone can give.

[This message has been edited by steve8586iroc (edited September 03, 2001).]

 

Sorry I can't help you. I gave up the 700R4 for a TH350 for drag racing. The 700R4 doesn't have a good gear ratio for the track. First gear is too loaw and the range between 1-2 is too far apart.

This might be a better question to ask the driveline forum so I'm moving it over there.