View Full Version : no 3-4 shift

10-20-2004, 10:52 AM
I have 88 sport bird and at full throttle it wont shift from 3-4th. I have to back off the throttle and tap it before it will shift to 4th. This is a real problem when trying to go top end with other cars i cant reach top speed because i cant stay on the pedal full throttle when in 4th or it will jump down to 3rd. please help

10-20-2004, 11:11 AM
Is it really normal for a car to do a 3-4 at WOT? I don't think it's a part of the stock AOD design. I don't think my car does it.

10-20-2004, 11:35 AM
No, WOT is cut out for a 3-4 shift on a factory AOD. Only way to eliminate that is via a shift kit.

10-20-2004, 12:27 PM
Your not going to do much passing in OD anyway ;)

10-20-2004, 01:10 PM
sadly its true. get a shift kit and toss in some 373s. smile big

10-20-2004, 06:27 PM
The stock OD band and servo is not designed to handle enough HP to use OD at WOT. The Trans-Go shift kit will allow the tranny to shift into OD, but you better at least up grade the servo, or your OD band will be toast.

10-20-2004, 09:43 PM
What Tom said, and also the stock input shaft might not be up to par. If your determined to have it shift into OD at WOT, install a transgo shift kit, upgrade servos, and install a hardened input shaft.