00Vette

iTrader: (4)

Every once in a while 1st will pop out into neutral. While at a light or stop sign, I'll be waiting in first to go and then the light turns green. So I let off the clutch and pop out comes first into neutral. When It does that I have to put it in and out of first till it goes forward. I have been just putting it in second so I don't hold up traffic. I have never heard of that happening and have no idea what would cause it. It only happens to first gear and only some times, but now I freak out every time I'm at a stop and in first waiting to go................The car drives great other wise.

That's exactly what happened right before I broke my rear end at Bremerton a while back. I was in first and staged, when the lights came down I let off the clutch and first poped out into neutral. My oponent was already 1/4 the way down the track as I crammed it into first and let off the clutch for a second time..........And POP the rear end broke.

Has anyone ever heard of this happening?????

Crisisman

iTrader: (1)

This has happened to me on 3 occasions. Each time it felt like I had just not quite put it all the way into gear, so the system just kicked it clear. I just put it back in, making sure it goes completely and have no further issue. This hasn't happened at the track, but I'm usually **** about making sure it's fully engaged when I'm getting ready to launch.

00Vette

iTrader: (4)

Yeah.........That's kinda what it feels like to me as well. But it has happened about 15 times in 2 days of driving. I have been driving my car alot cause I'm trying to break in my rear end. Did your car make a pop sound as it spit out of first?

And do you think that a bent shift fork would only affect first gear?

Crisisman

iTrader: (1)

The sound it makes I would describe as a "click" more than a "pop". As for your second question, I haven't a clue, no tranny experience here. Perhaps Ellis can pipe in on that one.

Racehead

Well if you didn't have it all the way in = no problem. If you DID have it all the way in = problem. They shouldn't pop into neutral under any circumstance if they were fully engaged to begin with.

00Vette

iTrader: (4)

If it was fully engaged and poped out but only some times what would you say could/would cause that?

It feels (sometimes) like it don't smoothly want to go into first, other times it does and still pops out.

Racehead

I'm going to have to refer you to Ellis. I work on Allison's, Spicers, Rockwells, Meritor autoshifts etc. on Semi's, not T56's. If I were to guess then I'd say you have some sort of shift rail/fork problem. I'm sure Ellis will chime in at some point.

WAHUSKER

iTrader: (4)

I had an old Borg Warner T10 that did this & it was poorly adjusted shift linkage. (I ended up grenading the tranny) Not to say it isn't a bent shift fork inside, which would yield the same result. Time to let Ellis have a look at it.....