TMAD4

i have an 89 gt, its the auto. It shifts just before the orange line starts. but thats not even close to where the redline is. would it run a better time if i held it in gear until the redline? whats the difference between the redline and the orange line?

1ATony

Leave it in drive and let it shift itself.If you do the 1-D-1 shuffle the over drive band will wear right out.

TMAD4

alright, and what if i just put it in first from the start and hold it there past the orange; to the redline? would that make it run quicker than letting it shift at the orange?

67mustang302

I doubt that engine makes much power past 4,500rpm, and there's probably no point in shifting it past 5k.

Tony71502

Here's a relatively stock 5.0 power curve. The torque drops off but the power is consistent. These runs go up to 5300 rpm.

luckythirteen13

no reason to rev the motor past peak power

1ATony

My thoughts too. Make a few pulls down the track and keep an eye on the tach,you'll feel where it stops pulling.