TH350 no upshift without lifting

diesel

Frequent Racer
Jan 4, 2010
480
0
0
Chicago, IL
Got a question. TH350 trans with shift kit. Drag only. Ratchet shifter. Kickdown cable not in use. Vaccuum modulator not in use.
This is the problem................. I leave off the line in first (everything is fine), shift into second gear (everything is fine), shift into third and the trans will not shift unless I come off the gas. Then it will go into third and I get back in it.
HELP ! ! ! What does this sound like ?
 

SSedan64

Dragway Regular
Oct 5, 2009
948
0
0
MACON, GA.
Are you using a Manual Valve Body? Just wondering how the Detent valve is positioned.

2-3 Shift Valve sticking/binding, posssibly.
 

diesel

Frequent Racer
Thread starter
Jan 4, 2010
480
0
0
Chicago, IL
SSedan64 said:
Are you using a Manual Valve Body? Just wondering how the Detent valve is positioned.

2-3 Shift Valve sticking/binding, posssibly.

Not a manual valve body / stock valve body. And the detent in just laying on the intake manifold (not functional). Its pushed all the way in - not pulled out.
 

167champ

Frequent Racer
Nov 16, 2006
504
0
0
omaha
Man I was just about to put this very same question up. I havent left it in drive, yet, but I would love to know the answer if anyone out there know please hit us up. Thank you
 

z28krazy

Amateur Racer
Apr 10, 2010
150
0
0
New Braunfels, Texas
No 2-3 shift can be caused by one or more of the following in the valve body and/or spacer plate:

1: 2-3 shift valve or 2-3 throttle valve stuck in the downshift position.
2: Leaking, damaged or incorrectly installed valve body gaskets.
3: Reverse/3rd check ball not seating, damaged or missing.

Go back and check your work boys.
 

Bar50

Pro Stocker
Jan 31, 2009
1,870
2
38
Tulsa, OK
Are you guys afraid of detent cables?

Not you LETSDRG yours doesn't need one.



What springs are in your governor?
 

LETSDRG

Weekend Racer
Apr 14, 2009
79
0
0
Grosse Ile, MI
ok, i rebuilt my trans, put a new pump in it, and cleaned the valve body to the max. i still only get third when i lift off the gas, and now reverse wont engage... i can hear the T brake solenoid engaging and the car jumps a little bit in reverse but wont move with any amount of throttle...

also no T brake in first either...

any one have an idea..

i think its about time i go with a 400 and leave this trans behind...
 

Ed Cannon

Pro Stocker
Jul 17, 2009
1,682
0
0
Johnson City Tn
My transmission guy put this in my trans when it was rebuilt and it really works great shifts hard and accurate. http://www.jegs.com/i/B-M/130/30228/10002/-1?parentProductId=748006
 

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