I have an 01 fbody (cam/exhaust... etc) with a vigilante 3200 stall converter. Car shifts with no issues when driving normal... but now it won’t shift from 2-3 at WOT, if I let off the throttle (still open about 75%) for a second or 2 it’ll shift and hold with no issues.

The trans was serviced about 2000 miles ago... did oem solenoids harness etc.... deep pan and cooler. Checked the fluid, full and still looks new.

Never had any issues till about 100 miles ago.

Tried changing shift speed/rpm and it did nothing.

Thanks in advance.

 

In your performance shift tables,

Set your max speed to 248 and your min to 247.

Set your WOT shift rpm to 6000 (or whatever rpm you like).

See if it shifts then.

This will command the shift at rpm vs speed & rpm.

 

Lower shift speed by 5mph in the wot sections of the table, raise the difference between commanded 2>3 rpm and your rev limiter rpm. There needs to be a minimum of 4-500 rpm gap.

 

Post your tune file.

 

Stop, its supposed to be a guessing game!!!

 

here is the tune

 

it does appear that way doesnt it... you have a good looking car!

 

6300 commanded shift what is ACTUAL mph at that rpm in 2nd, cause you've got it at 79. I'd also add some pressure overall and reduce shift times. I can send you a tune to look over if you want.....With mine, I commanded 6500 with a 7200 cutoff, so my window was slightly larger then yours with your 6800 cutoff. 2>3 can be very lazy. Id reduce to a 6100 commanded, drop 79 mph down to low 70s, and add some base shift pressure, you should be good.

 

That’d be great if you could send me your tune (to compare), i really appreciate your help! Thank you

 

Pm me your email and address and I will send it

 

The line pressure worked! Made a couple passes last!

Thanks again

 

Did adding shift pressure fixed it...?

 

Yes it did, shifts every time!!