th350 shifts weird

ChevyTruckGuy78

Twins done Now for trans
Feb 7, 2010
694
0
0
Ct.
ok i got a th350 thats hangin up on shiftin gotta give it more fuel to to get it to shift but it downshifts fine i went through the trans a few months ago replaceing the clutches truck is a mid 80s blazer with the trans out of a 81 k5 blazer 350ci
 

JMDuramaxLB7

YOU SAID MEMBER!!!
Jun 3, 2007
744
0
0
Missouri
Do you have a kickdown cable on it, sometimes they are picky without one. If it is not setup as a manual valvebody it needs a kickdown cable. If it has a an adjustable modulator you can adjust it to change the shift points.
 

ChevyTruckGuy78

Twins done Now for trans
Feb 7, 2010
694
0
0
Ct.
i will check those things in the morning left the truck at my buddys house i dont have any more driveway room here
 

ChevyTruckGuy78

Twins done Now for trans
Feb 7, 2010
694
0
0
Ct.
no leaks in the vacuum lines and detent cable seems to opperate normally dosent appear to be stuck in half posistion

:confused:
 

ChevyTruckGuy78

Twins done Now for trans
Feb 7, 2010
694
0
0
Ct.
i replaced the clutches in this trans cuz the idiot whohelped me install it in my truck forgot to tighten up a clamp and blew out a trans cooler line and smoked the clutches. so i replaced all teh clutches and changed what ever seals and orings that were in the kit the only thing i didnt do is take the pump apart. and the way the trans went is i was driving up the street maybee 1/4 mile and id started slipping so i quickly turned around and coasted it home and repaired the line refilled it and drove it fine till it started slipping again a few months later so i gutted the truck and rebuilt the trans.

the trans seems to be gettin worse its really hangin in gear now. when i drove it the mile to my house lastnight it hung up bad but it still shifted and felt like a normal shift
 

ChevyTruckGuy78

Twins done Now for trans
Feb 7, 2010
694
0
0
Ct.
i didnt get to pull the govenor though too damnnnnnn coldddd out at the moment i have to move trucks around so i can get to the heater
 

ChevyTruckGuy78

Twins done Now for trans
Feb 7, 2010
694
0
0
Ct.
stupid question what can happen to it if i dont remove it asap its in a plow truck i need to use is it just not gonna shift or os it gonna go boom
 

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
15,681
232
63
Fullerton CA
stupid question what can happen to it if i dont remove it asap its in a plow truck i need to use is it just not gonna shift or os it gonna go boom

The case can be bored and a bushing installed. The next thing that will happen is the gov will cock in the bore and take out the plastic gear on the end.
 

ChevyTruckGuy78

Twins done Now for trans
Feb 7, 2010
694
0
0
Ct.
i replaced the govvoner and also found a rip in the modulator hose and repaired it and so far so good i had a good govoner laying around so lets see how long this turd lasts