What causes early lock up...
Originally Posted by 2001NBMZ28
What's the correct part throttle lock up speed supposed to be? Mine always locks about 38 MPH. I originally had 2.73's.
Originally Posted by Spellbound
of the TC after heads/cam? My Girlfriends car is locking up at 35mph 
The lockup table is just speed & TPS. You would want to
scale the lockup table by (new ratio / old ratio) if you didn't
change anything else. If you get into tuning the part throttle
shift points then the lockup also has to be slid around to make
it playnice and stay out of the way of the shifts. This gets
to be difficult. So I just got rid of 3rd gear lockup entirely and
at least got 4th the way I like.
scale the lockup table by (new ratio / old ratio) if you didn't
change anything else. If you get into tuning the part throttle
shift points then the lockup also has to be slid around to make
it playnice and stay out of the way of the shifts. This gets
to be difficult. So I just got rid of 3rd gear lockup entirely and
at least got 4th the way I like.
