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transmission not wanting to shift

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Old Dec 26, 2005 | 01:17 PM
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From: Bedford Iowa, i didn't know spending this much money could be so fun!!
Default transmission not wanting to shift

th350 dosn't wnat to shift when changing gears, sometimes keeps going untill i let up the throttle do i need a shift kit rebuild, as i have no clue when i comes to a tranny
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Old Dec 26, 2005 | 01:31 PM
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Check to see that the vacuum modulater connection didn't come loose. If it's still on ,maybe you have a vacuum leak you can eliminate by disconnectiing all the vacuum lines you can(plug the ports you disconnect)
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Old Dec 26, 2005 | 01:47 PM
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will this affect shifting all the time or just while accelerating?
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Old Dec 26, 2005 | 02:19 PM
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All the time.When I had the th350 in,the vacuum line fell off the modulater and it would not shift out of 1st gear at all.
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Old Dec 26, 2005 | 02:25 PM
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From: eville in
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Old Dec 26, 2005 | 02:44 PM
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First you throw a rod and now tranny problems hope it's not contagious.
Sounds like a good time to pull the drive train and do some upgrades.
Good Luck

Kona
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Old Dec 26, 2005 | 02:45 PM
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From: Bedford Iowa, i didn't know spending this much money could be so fun!!
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probably needs rebitlt or a shift kit because the problem is only during heavy acceleration what do you think?
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Old Dec 26, 2005 | 02:52 PM
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Originally Posted by kona
First you throw a rod and now tranny problems hope it's not contagious.
Sounds like a good time to pull the drive train and do some upgrades.
Good Luck

Kona
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Old Dec 26, 2005 | 05:06 PM
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From: eville in
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is the kick-down cable adjusted correctly
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Old Dec 26, 2005 | 05:14 PM
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I can sympathize. Just picked up our "new" '71 today with Turbo 400 transmission. Car runs and drives fine, but when I kicked it down to accelerate onto the interstate, the egine revs like crazy, but the transmission doesn't kick into passing gear (second gear?).
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Old Dec 26, 2005 | 05:34 PM
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Might simply be the fluid level. Make sure that you check it with the engine running. Makes a big difference.
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Old Dec 26, 2005 | 07:55 PM
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May also look at the governor, even with the modulator disconnected @ ~4800-5200rpm's the trans should shift. I would look at the modulator first though. As far as the shift kit goes this will not "fix" a mechanical problem somewhere else in the trans. If the trans is not shifting at all right now, the shift kit won't help.

ltlevil
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Old Dec 26, 2005 | 10:05 PM
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proracr: The th400's do not have a mechanical TV cable. They have an electric solenoid that it activated by a switch under the gas pedal. The switches can get dirty or the solenoids can go bad to cause that problem. Look's like another electrical gremlin.
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Old Dec 26, 2005 | 10:08 PM
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Originally Posted by scotty13
proracr: The th400's do not have a mechanical TV cable. They have an electric solenoid that it activated by a switch under the gas pedal. The switches can get dirty or the solenoids can go bad to cause that problem. Look's like another electrical gremlin.
Thanks Scotty! I will check that out. A very exciting day today. We have been without a Vette for over 4 years and finally have one again!

Thanks again.
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Old Dec 26, 2005 | 10:14 PM
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From: eville in
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Originally Posted by scotty13
proracr: The th400's do not have a mechanical TV cable. They have an electric solenoid that it activated by a switch under the gas pedal. The switches can get dirty or the solenoids can go bad to cause that problem. Look's like another electrical gremlin.
top said TH350
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Old Dec 27, 2005 | 03:20 PM
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From: Bedford Iowa, i didn't know spending this much money could be so fun!!
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ok, a buddy of mine said he could hook me up with the built 700 r4 out of his s-10 anyone put one of these in, will if fit?
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Old Dec 27, 2005 | 03:23 PM
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From: eville in
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Originally Posted by 1978 mayhem
ok, a buddy of mine said he could hook me up with the built 700 r4 out of his s-10 anyone put one of these in, will if fit?
that may have the weak imputshaft
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Old Dec 27, 2005 | 03:39 PM
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http://forums.corvetteforum.com/show...995&forum_id=3
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Old Dec 27, 2005 | 08:13 PM
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From: Bedford Iowa, i didn't know spending this much money could be so fun!!
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Originally Posted by comp
that may have the weak imputshaft
his s-10 is putting down around 500hp, and i think the input shaft isn't the stock one, will i have trouble with fitting it in though on the input or output side, hopefully i won't need a new driveshaft to make it fit
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