 |
Mike:
The turbo 350 street/strip TCI transmission I purchased new will not
go in high gear at wide open throttle, manual shifting. I have tried
replacing the governor out of stock 350 at TCI request. No help. Even
auto shifting it will not go into high gear without letting off gas.
The transmission is in a stock '78 El Camino with a 305 engine.
Any advice would be a great help.
Thanks,
McConnell 549
McConnell,
Very interesting problem! A few things you need to check:
- The
first thing that comes to mind is low governor pressure. Check governor
bore in case for excessive wear.
- Detent
cable adjustment. First try unhooking the detent cable. If this cures
the problem you will need to adjust the detent cable to barely get
full pull at wide open throttle.
- Next,
check mainline pressure. Put pressure gauge on mainline pressure tap
and do a line pressure test on the transmission. Pressure should be
only slightly higher than manufacturer's manual states. Your problem
sounds like possibly some type of internal leak.
- Also,
check the vacuum system. Make sure you have manifold vacuum at modulator
and modulator valve is free in the case.
Mike Stewart is owner of Mike’s Transmission
in Lancaster, California. He will answer your questions about automatic
or powerglide transmissions.
Email: Mike@racingnetsource.com |
Mike Stewart
|
