Flairing at heavier throttle

[DorianL]

Hallo,

My trans is together and it happily goes through all the gears. I come from a TH350, MAN that OD is phenomenal! LOVE it!

Anyway, the trans is back together.

My list of parts are new raybestos clutches, 0.570 boost, PTS shift kit, rollerized center support, GN servo, extra wide band + 300M anchor pin, deep pan, 3-clutch fourth gear pack, and a 2200 Bowtieoverdrives HD converter.

At mild acceleration all three shifts are fairly firm.

If I give it more gas, the firmness of the shifts fade.

I guess one possibility is adding a quart of oil. I have a lokar dipstick. I indicates full... maybe try another half quart?

Another thing might be the TV cable adjustment. I am using a hughes bracket on an AFB carburetor. Perhaps use one of those TV made EZ devices?

Hmmm, that or something with the VB?

My pressures at 1000 rpm at no TV and full TV are

P - 105 - 250
R - 180 - 210
N - 105 - 245
D - 107 - 210
3 - 105 - 210
2 - 210 - 205
1 - 195 - 195

D

 

[mikestertwo]

The problem is most likely the geometry on the TV cable assy. It is very critical on how it is set up, ie. throttle angle vs. tv cable pull. Did you try adjusting the throttle cable a little tighter to see what happens?

 

[bison]

With a .570 boost you should have a lot more pressure than you have. Did you manually pull the TV to max? Is there a big pressure drop while shifting under power on the 2-3?

 

[77 cruiser]

2nd that for more press. with .57 valve. What did you do for a pump D? Did you get one from Bruce? I think it's common for his setups to run about 270.
Did you set your TV so the cable is tight @ WOT?

 

[DorianL]

Hmmm, I was reading the TV Made EZ website.

I need to replug in my pressure gauge. My guess is that I have a "long spring syndrome." I need to confirm this, but I think the TV valve behind the spring is traveling too far causing a pressure drop and flairing at all shifts.

There seems to be a sweet spot on the throttle when line pressure is probably at its highest and the shifts are firmest. Then as you get on the gas, the firmness fades.

Will check that out this weekend.

D

 

[DorianL]