[Pete Munroe]

All,

Purchased a 3550 TKO (2600708) back in 99'.

All the mods seem to be only for the TKO 500/600's. Are there ways to significantly improve the early TKO?

Guess the entire point in the 500/600 redesign was to correct inherent problems with the early TKO.

My current shifter is a very simple ball/socket. No adjustable stops, etc.
It was installed to be able get the shifter handle a few inches forward of the stock position.

Is there is a "parts package" to improve the general shifting in the early trans? The fluid is the correct # GM synchromesh.

Do not need more torque capacity, but general smoother shifting would be great. Fast shifting 2nd to 3rd is a 50/50 proposition. Although that seems to be a common thread on all of the TKOs'.

This one is so notchy that in traffic it is hard to get it into first with going back/forth to another gear. Yes, the clutch is disengaging.

The ONLY thing I like about the trans is the 5th gear overdrive...first is way too low for me at 3:27...especially with a 3:54 rear gear.

Due to $$$$ a reworked 600 is not in the cards.

Thanks, Pete