Help! torque converter - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jackie Mac · 09-03-2011, 02:10 AM

I have read and studied everything in this forum and elsewhere on how to properly install a torque converter. I just had my TH350-c (Lockup) trans rebuilt. I ordered a new conv. and went to install the trans. and there is no gap between the Flex plate and the conv. I literally spent 30 minutes taking the converter on and off, spinning it back and forth and every thing else and I am as positive as I can be that the Conv. is seated properly. I replaced the rear engine seal while I had the trans dropped and the flex plate is on correctly. I even put the old torque converter back on to check the gap and it also has no gap. I understand that there is supposed to be 1/16 to 1/8 gap and the converter should turn freely. The man that rebuilt my trans. is supposed to be very experienced but I am wondering If the correct pump was used in the rebuild? Any suggestions or ideas? Does the lock up trans also have to have the same 1/16 to 1/8 gap? Thanks much for any help

**old Rusty C10** · 09-03-2011, 09:14 AM

anytime ive done a trans replacement theres been a gap..

rwhit57 · 09-03-2011, 05:31 PM

Sometimes it's tough to get the converter to seat right. That's sure what it sounds like.

JuicyJ · 09-03-2011, 08:08 PM

This article is pretty good at explaining how to install a torque converter.

http://http://www.technovelocity.com...converter.html

VWNate1 · 03-30-2012, 09:58 AM

That's a bad link....

I'm not sure hot
w to explain fitting a Torque Converter , I was taught in the dealer , to invert the tranny and place it in place then rapidly rotate it forwards & back , as the slines line it , it'll drop a bit with a " clunk " .

There are three steps of splines but careful attention to where you place it to begin with , reduces this to two .

If no gap , DO NOT button it up ! .

We used an old 35 gallon grease drm , it fits the bell housing *perfectly* .

.

raceman6135 · 03-31-2012, 02:25 PM

I think this is the link Juicy was posting:

http://www.technovelocity.com/chevyh...converter.html

Jackie, sorry to tell you this, but you don't have the convertor properly seated. When a straight edge is placed across the transmission's bellhousing mounting face, the torque convertor mounting lugs (the 3 pads that mate to the flexplate) will be approximately 1" toward the rear of the vehicle.

Non-GM transmission in this illustration:

INSIDIOUS '86 · 03-31-2012, 04:45 PM

The two teeth on the converter engage the pump in the trans. The new converter and pump are not worn on those lugs and are prob keeping themselfs from seating all the way. Turn the th converter real fast like your palm driving while pushing just a bit.
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09-03-2011, 02:10 AM	#1
Jackie Mac Registered User Join Date: May 2011 Location: Lebanon Tn Posts: 39	Help! torque converter I have read and studied everything in this forum and elsewhere on how to properly install a torque converter. I just had my TH350-c (Lockup) trans rebuilt. I ordered a new conv. and went to install the trans. and there is no gap between the Flex plate and the conv. I literally spent 30 minutes taking the converter on and off, spinning it back and forth and every thing else and I am as positive as I can be that the Conv. is seated properly. I replaced the rear engine seal while I had the trans dropped and the flex plate is on correctly. I even put the old torque converter back on to check the gap and it also has no gap. I understand that there is supposed to be 1/16 to 1/8 gap and the converter should turn freely. The man that rebuilt my trans. is supposed to be very experienced but I am wondering If the correct pump was used in the rebuild? Any suggestions or ideas? Does the lock up trans also have to have the same 1/16 to 1/8 gap? Thanks much for any help

09-03-2011, 09:14 AM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	Re: Help! torque converter anytime ive done a trans replacement theres been a gap.. __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

09-03-2011, 05:31 PM	#3
rwhit57 Registered User Join Date: Jan 2011 Location: Tulsa,Okla Posts: 590	Re: Help! torque converter Sometimes it's tough to get the converter to seat right. That's sure what it sounds like.

09-03-2011, 08:08 PM	#4
JuicyJ Registered User Join Date: Jun 2010 Location: San Antonio, Texas Posts: 123	Re: Help! torque converter This article is pretty good at explaining how to install a torque converter. http://http://www.technovelocity.com...converter.html __________________ America is all about speed, hot nasty bad ass speed

03-30-2012, 09:58 AM	#5
VWNate1 Registered User Join Date: Feb 2012 Location: So. Cali. Posts: 2,664	Re : Torque Converter Artilce That's a bad link.... I'm not sure hot w to explain fitting a Torque Converter , I was taught in the dealer , to invert the tranny and place it in place then rapidly rotate it forwards & back , as the slines line it , it'll drop a bit with a " clunk " . There are three steps of splines but careful attention to where you place it to begin with , reduces this to two . If no gap , *DO NOT* button it up ! . We used an old 35 gallon grease drm , it fits the bell housing perfectly . . __________________ -Nate Geezer '49 3100 235 W/ Muncie SM420 SOLD '69 C/10 shortbed sidemount survivor 250 L6 W/ 350TH

03-31-2012, 02:25 PM	#6
raceman6135 Dino burner Join Date: Nov 2002 Location: Calgary, Alberta, Canada Posts: 602	Re: Help! torque converter I think this is the link Juicy was posting: http://www.technovelocity.com/chevyh...converter.html Jackie, sorry to tell you this, but you don't have the convertor properly seated. When a straight edge is placed across the transmission's bellhousing mounting face, the torque convertor mounting lugs (the 3 pads that mate to the flexplate) will be approximately 1" toward the rear of the vehicle. Non-GM transmission in this illustration: Last edited by raceman6135; 03-31-2012 at 02:32 PM.

03-31-2012, 04:45 PM	#7
INSIDIOUS '86 Registered User Join Date: Jul 2009 Location: washington Posts: 4,178	Re: Help! torque converter The two teeth on the converter engage the pump in the trans. The new converter and pump are not worn on those lugs and are prob keeping themselfs from seating all the way. Turn the th converter real fast like your palm driving while pushing just a bit. Posted via Mobile Device __________________ 377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511

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