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Tranny help in a 79 Trans Am

2K views 2 replies 2 participants last post by  FASTCHEVY 
#1 ·
Hi. I just installed a B&M shift kit in my 350 transmission. Having some shifting problems.

1. when you put the shifter into reverse it feels like it is going into gear but won't move until you feather the accelerator.
2. the tranny will not shift into 2nd gear until you hit almost 5,000 rpm's.

Some notes -- The trans operated properly until I installed the shift kit.

The trans was out of the car when I installed the shift kit. Not my first shift kit install. So I am 99.99% sure everything was done right.

I did degrease and paint the trans while it was out.

I have checked all the vacuum lines and can't find any problems. The linkage is also tight, seems to shift the trans correctly.

I had someone ask me if I filled the torque converter before re-install. Which I didn't do. I have never done that is the past and havn't had any problems. But who knows could be the my problem. My other question would be whether the vacuum modulator could be bad? maybe when I degreased the motor I messed something up?

Thanks for any help,

Scott
 
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