Any tips for shifting by time instead of rpm?

[Rick Bailey]

Well in your case , if you have a playback you can do this,........lets say you really like for the motor to shift at 6800 rpm (as in my case) . Make a run shifting at 6800 rpm and then run the playback to see what 6800 rpm equated to in time. Mine is 2.25 if I remember correctly. (been a while since I've ran without the stop, w/stop it's 2.02)

Hope this helps.

Rick

[R&S Motorsports]

Having shifted on time for years I can tell you your car will most likley need to shift somewhere between 2.1-2.7 sec depending on rear end gear, trans ratio, hp etc. If you have a computer or a playback tach it would make much easier to pick your exact number, otherwise start on the low end and work your way up to your desired RPM. Good Luck

[alaska racer]

That's what I was looking for,a starting point.thanks for the help!

[Bill Baer]

Alaska Racer

We shift on time @1.0 sec. the stop comes on at .05 and off around 3.00 so we are in high gear when we come off the stop which seems to help consistency.

[Rick Bailey]

Bill but that is with how much motor.......I'd guess u'd need some motor to be shifting on the stop, or at least that what I've always been told. I'd like to try it but I'm only a 477 (bg blk chev)

Thanks

Rick

[Chris Williams]

Originally Posted by Bill Baer

Alaska Racer

We shift on time @1.0 sec. the stop comes on at .05 and off around 3.00 so we are in high gear when we come off the stop which seems to help consistency.

Almost exactly the same here. Except we go on the stop at .00, and off around 2.25 or so. We shift at 1.0 secs, and the RPM trace on the stop is like a laser line. When we shifted any later, it was much less smooth. FWIW, we have a 565BB at about 900hp.