The turbo 400 thats behind my olds 455 isn't shifting properly. After pulling it out of the donor car last winter and putting it in my 77 firebird, I added a B&M shift kit, and a B&M console mount shifter. When I took it out to test drive it this spring, it shifts from first to second well but doesn't want to shift from second to third. I replaced the vacuum lines thinking maybe that would help it out but it still doesn't work. Any ideas, tips or suggestions? It's driving me insane that I can't drive it yet. Which might be a good thing, considering my classload this quarter....
CK5
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not really a k5 question but I need some help!
- Thread starter reaper450
- Start date
chulisohombre
1/2 ton status
check the fluid first?maybe the modulator is bad.not enuf vaccuum advance to switch gears to 3rd.or clogged valve body.with the shift kit anything is possible if something isnt done exact or off a lil bit.
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If you didn't do it when you swapped it out, a fluid and filter change, and a new modulator (because its cheap). Also if you did do a fluid and filter change, I would drive it for a while around town and keep checking the trans fluid. I have had two vehicles that took a good bit of driving to shift properly after a fluid and filter swap.
Tranny guy said it was working all the air out of the system. It was bad enough I was driving to the parts store to get more fluid and a new filter to swap it again when all of a sudden it shifted properly and never acted up again.
Also if your old tranny was bad, did you blow the lines out before you put the new trans in?
Tranny guy said it was working all the air out of the system. It was bad enough I was driving to the parts store to get more fluid and a new filter to swap it again when all of a sudden it shifted properly and never acted up again.
Also if your old tranny was bad, did you blow the lines out before you put the new trans in?
well, there wasn't a tranny in it when I got the car. I just pulled the drivetrain out of a donor car and dropped it in this one. The fluid is new, the filter isn't, it didn't look to bad so I left it. It's only been driven like two miles so maybe it does just need to work out the air, I'll try that before I dive back into the transmission. If that doesn't work a new modulator, fluid and filter will be next on the list. Along with a pan drain bolt....
