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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!psinntp!newstand.syr.edu!mothra.syr.EDU!ravalent
- From: ravalent@mothra.syr.EDU (Bob Valentine)
- Subject: Re: tranny problems
- Message-ID: <1992Dec16.162335.18284@newstand.syr.edu>
- Organization: Syracuse University, Syracuse, NY
- References: <1992Dec14.181341.14802@colorado.edu> <1992Dec14.204622.7212@mlb.semi.harris.com> <exuptr.417.0@exu.ericsson.se>
- Date: Wed, 16 Dec 92 16:23:35 EST
- Lines: 41
-
- In article <exuptr.417.0@exu.ericsson.se> exuptr@exu.ericsson.se (Patrick Taylor) writes:
- >In article <1992Dec14.204622.7212@mlb.semi.harris.com> jws@billy.mlb.semi.harris.com (James W. Swonger) writes:
- >>From: jws@billy.mlb.semi.harris.com (James W. Swonger)
- >>Subject: Re: tranny problems
- >>Date: 14 Dec 92 20:46:22 GMT
- >
- >
- >> A disconnected vacuum modulator line seems to act to make upshifts happen
- >>sooner, though that goes against logic. I know I've had lines come off and
- >>the trans would basically shift right away, so I'd be in third by 20MPH.
- >>Reconnecting it made things shift later.
- >
- >> GM TH400 automatics have used electrical kickdowns since the late '60s at
- >>least. There is no kickdown linkage, just a switch on the gas pedal.
- >
- >Is it always on the gas pedal? Is there another way to do this? I have
- >a conversion that is running a Turbo 400 and I'm pretty sure there is no
- >kickdown at all. Sometimes the vacuum will cause a down shift, but not
- >really very often
-
- Pontiacs and Buicks usualaly had the switch mounted on the
- engine, Oldsmobile and Chevy usually mounted it on the pedal.
-
- I'm using general knoweldge of 68-72 midsize GM's. On the
- conversion in my car, I modified a switch off a Pontiac motor, since
- is was fairly modifiable. One of the aftermarket companies makes a
- switch that will just plug in where the TH-350's cable was, but I
- wasn't about to cough up the $50 bucks for it.
-
- [pile-o-sigs deleted]
-
-
- --> Bob Valentine <--
- --> ravalent@mailbox.syr.edu <--
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