What do I need?
Supreme Member
Joined: Jul 1999
Posts: 2,767
Likes: 2
From: Vereinigten Staaten
Car: Take
Engine: Your
Transmission: Pick
You need to remove the Throttle plunger sleeve and block the "detent downshift" passage. How to do this can be found here:
http://w1.601.telia.com/~u60113744/t...tranny_wot.htm
Just remember that after you do this, any speed above around 55 MPH will require you to manualy downshift into third if you need it to downshift.
http://w1.601.telia.com/~u60113744/t...tranny_wot.htm
Just remember that after you do this, any speed above around 55 MPH will require you to manualy downshift into third if you need it to downshift.
Last edited by GMTech; Feb 9, 2003 at 08:00 PM.
Supreme Member
Joined: Jul 1999
Posts: 2,767
Likes: 2
From: Vereinigten Staaten
Car: Take
Engine: Your
Transmission: Pick
GM had the "B Car Fix" that was supposed to allow OD at WOT for police cars, which was a revised 3-4 shift valvetrain. Availability may be getting scarce on those. As far as the B&M upshift sleeve, all it is, is a billet sleeve made with this passage already blocked off.




