Little Torqueflight 2 to 3 shift?

[Tom Goldman]

Art, the 2nd gear servo should be blocked .
The 2nd gear servo accumulator which is the small one between the two servos should be blocked between the case and the piston to its top most position.
Also make sure the 2nd servo top cover fits the pushrod closely . ...If its worn ,fluid loss will cause a slow 3rd shift, as 3rd clutch apply pressure also helps release the 2nd band ....A stiffer spring in the top of the 2nd servo might help ,but it sounds like you might have a fluid loss problem. ..
Direct clutch clearance should not be more than .060"
The 2nd band adjustment can have a slight effect in the 3rd shift timing.
I'd set the band @ 1 3/4 to 2 turns backed off from 72 lb.in.

[Paul Precht]

Lighter springs or less springs in the front clutch can help.

[George Mirza]

This is a common problem in the 904's when using the stock spring in the high gear clutch pack. I'm not sure if the transmission your speaking of uses this type of spring. It looks like a giant valve spring. JPT makes a multi spring pack that replaces it and takes care of the 2-3 shift flare. I've been told that a big coil spring like that wants to grow at high rpm and can be difficult to compress.
George