904 Steel Planetary Upgrade

[Lefty71]

I have also found that if you run a 5.0 lever in a 727 with a stock type VB you can experience 2-3 shift overlap so for that reason I use a 3.8 or 4.2 lever,

From what I've been reading, this is exactly correct. The 5.0 lever can make the 2-3 overlap a pronounced issue. If you look at the big names well built and competition 727 builds, they are all 4.2 levers included, no 5.0's.

 

[Duane]

I just drilled a hole in the lower vb casting direct clutch feed channel 5/8" back from the front and 7/16" from the closest screw. I used an 1/8" from the channel side so the bit was centered in the channel, then followed it up with a 3/16". I'll go buy a tap and find the right allen head screw and length to where I can use a lock nut under it. Then I'll need a large hollow drain plug to weld in the pan over it so all you have to do is remove the drain plug, loosen the lock nut, adjust the volume by turning the screw, tighten the lock nut, replace plug and refill.

Could you post pics of this or make a sketch and post it so I better understand what you did here.

 

[Duane]

From what I've been reading, this is exactly correct. The 5.0 lever can make the 2-3 overlap a pronounced issue. If you look at the big names well built and competition 727 builds, they are all 4.2 levers included, no 5.0's.

I have also read and been told that the number of return springs in the high gear clutch affects the speed of apply and gives more time for the band to release.
Trans go has also told me that the dual sealing ring servos common on the aftermarket also slow the release of the band aggravating band overlap.