Tranny troubles... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ABX131 · 08-10-2012, 11:24 AM

I just put in a th350 in my 63' 4x4 and took her around the block when I was done. It went well until I put it in reverse. You can hear it click in and it wants to go but it wont. Had to put it in neutral and roll it back. Tried it in all gears of the transfer case and same result. Even tried rolling backward and dropping it into reverse and it stops. Anyone have any ideas?

ABX131 · 08-12-2012, 03:17 AM

No one has any input on this???

ABX131 · 08-12-2012, 03:19 AM

I know nothing on trannys..is it possible to external adjustments or is everything internal...

gimmy 64 · 08-12-2012, 07:24 PM

had the same thing happen to me. everything was great went to back in garage and nothing. talked to a transmission guy and said it was the shifter fork inside broke? i just put in another trans and didn't try to fix it

clinebarger · 08-12-2012, 07:51 PM

Find a safe, low traffic hill, Stop you truck about halfway up the hill, Put your truck in reverse.......

Does it stay there?

Kill the engine while still in reverse....

Does it roll back now?

If the truck rolls with engine off in reverse But locks-up with the engine running....The forward clutch is staying applied while in reverse, In layman's terms....In reverse & 3rd at the same time. This is a internal issue that normally requires a rebuild.

ABX131 · 08-12-2012, 08:21 PM

Thank you for your input....looks like the tranny is coming back out. I was hoping that was not going to be the case but oh well!

ABX131 · 10-13-2012, 10:33 AM

Finally had to have a real tranny guy deal with it and now I am back on the road. Took the first drive yesterday and what a feeling! I toyed with selling her but now I am amped to keep working on her...My son sold his car and is now driving the 63' to school.

j.kirn · 10-13-2012, 12:28 PM

so what was the problem?

ABX131 · 10-13-2012, 12:39 PM

Got burned on a CL replacement tranny, had the shop look at the two I brought in and had the best one repaired...turned out my original was a lock up torque converter with a shift kit so we went with that one as a starting point..the kick down cable seized and the band fried causing it to skip from 3rd to 1st...also changed the valve body..

08-10-2012, 11:24 AM	#1
ABX131 Registered User Join Date: Mar 2012 Location: Seattle,WA Posts: 317	Tranny troubles... I just put in a th350 in my 63' 4x4 and took her around the block when I was done. It went well until I put it in reverse. You can hear it click in and it wants to go but it wont. Had to put it in neutral and roll it back. Tried it in all gears of the transfer case and same result. Even tried rolling backward and dropping it into reverse and it stops. Anyone have any ideas?

08-12-2012, 03:17 AM	#2
ABX131 Registered User Join Date: Mar 2012 Location: Seattle,WA Posts: 317	Re: Tranny troubles... No one has any input on this???

08-12-2012, 03:19 AM	#3
ABX131 Registered User Join Date: Mar 2012 Location: Seattle,WA Posts: 317	Re: Tranny troubles... I know nothing on trannys..is it possible to external adjustments or is everything internal...

08-12-2012, 07:24 PM	#4
gimmy 64 Registered User Join Date: Sep 2009 Location: menifee california Posts: 788	Re: Tranny troubles... had the same thing happen to me. everything was great went to back in garage and nothing. talked to a transmission guy and said it was the shifter fork inside broke? i just put in another trans and didn't try to fix it

08-12-2012, 07:51 PM	#5
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Tranny troubles... Find a safe, low traffic hill, Stop you truck about halfway up the hill, Put your truck in reverse....... Does it stay there? Kill the engine while still in reverse.... Does it roll back now? If the truck rolls with engine off in reverse But locks-up with the engine running....The forward clutch is staying applied while in reverse, In layman's terms....In reverse & 3rd at the same time. This is a internal issue that normally requires a rebuild.

08-12-2012, 08:21 PM	#6
ABX131 Registered User Join Date: Mar 2012 Location: Seattle,WA Posts: 317	Re: Tranny troubles... Thank you for your input....looks like the tranny is coming back out. I was hoping that was not going to be the case but oh well!

10-13-2012, 10:33 AM	#7
ABX131 Registered User Join Date: Mar 2012 Location: Seattle,WA Posts: 317	Re: Tranny troubles... Finally had to have a real tranny guy deal with it and now I am back on the road. Took the first drive yesterday and what a feeling! I toyed with selling her but now I am amped to keep working on her...My son sold his car and is now driving the 63' to school.

10-13-2012, 12:28 PM	#8
j.kirn Registered User Join Date: Jun 2006 Location: MO. Posts: 970	Re: Tranny troubles... so what was the problem?

10-13-2012, 12:39 PM	#9
ABX131 Registered User Join Date: Mar 2012 Location: Seattle,WA Posts: 317	Re: Tranny troubles... Got burned on a CL replacement tranny, had the shop look at the two I brought in and had the best one repaired...turned out my original was a lock up torque converter with a shift kit so we went with that one as a starting point..the kick down cable seized and the band fried causing it to skip from 3rd to 1st...also changed the valve body..



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.