Old bests on 4L60E in sig. Took her to Evadale today to get some runs in similar air as old runs and came up with this on the footbrake.

1.53
6.85@99.98
10.78@125.25

I think it lost some in the 60' due to the different gearing but the ATI MRT Treemaster is awesome. Hit the transbrake which goes to 5500 on this verter and pulled a 1.56 which sucks. Ill have to get some kind of rev control. All in all Im satisfied with the swap. Didnt lose too much but need work on the brake.

 

doesn't look like you gained much either? but you did lose OD?

 

Not bad. The gains are there you just have to find them. My first time out with my A3 I went 11.20's. Went home and thought about it. Took it back to the track the next weekend and ran 10.90's in the same air with 2 minor changes.

 

LOL, what were the changes?

 

Agreed that going from the OD first gear ratio killed a little but as mentioned you should be able to find some more in it.

Derek

 

Yeah if I get the Transbrake going and the suspesion lined out right. Im on some old tires too. What about stiff sidewall tires?

 

Very nice, so still 3300 raceweight? You got to 5500 on the footbrake, you must have some pretty awesome front brakes.

 

John, it says 5500 on the transbrake and yeah Im still at 3330 with me in it. Enjoyed your feature in GMHTP.

 

pm replied

 

hate to hijack but in a bolt on car that has 3.73s that rarely sees the track would you recomend a th350 swap over the 4l60e? thanx and sorry if i screw up your thread..

btw nice times

 

no - you loose overdrive and lock-up. end of story.

back on track!

 

thanx

 

Nice it looks like high 1.3's and you'd hit 10.5's. I have run the same 1/8th (99mph) so I'm hopeful to drop down from my current 10.92 once I get the ATI converter in.