Vibrations after tranny swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68c10guy · 06-28-2009, 09:51 AM

yesterday i swapped a brand new rebuilt th350 into my truck. it is a midly built tranny and it has a 2200 boss hog torque converter. Here is my problem, there is a vibration. at any speed it kind of pulses. it does this in park when i rev the engine too. any ideas?

68fixeruper · 06-28-2009, 10:18 AM

torque convertor is what id check first make sure bolts are good if everything is ok with the bolts you still could have a bad torque convertor

Longhorn Man · 06-28-2009, 11:43 AM

I would unbolt the converter, and rotate it to the next hole, then bolt bolt it back up.

JCA1972 · 06-28-2009, 03:05 PM

Quote:

Originally Posted by Longhorn Man

I would unbolt the converter, and rotate it to the next hole, then bolt bolt it back up.

I had the same problem when I swapped my manual to an auto. This is what I did to fix it.
I removed the dust cover and loosened the converter bolts, and then I slowly re tighten them by tightening one a little bit then the other, kind of like when you tighten a wheel.
Thats all and the vibration stopped. Its worth a try.

68c10guy · 06-28-2009, 10:57 PM

i tried loosening then retightining. i will try the hole idea thoug. Anyone have any mor input? Thanks for everything!

**GruntMoanCough** · 06-28-2009, 11:18 PM

Did you happen to change your flex plate as well?

68c10guy · 06-29-2009, 11:22 AM

No flexplate was same as last transmission, and i had no vibration with that one.

**GruntMoanCough** · 06-29-2009, 12:11 PM

Quote:

Originally Posted by 68c10guy

No flexplate was same as last transmission, and i had no vibration with that one.

..........just a thought.

Could it possibly be internal? I don't know how, maybe talk to your tranny guy.

06-28-2009, 09:51 AM	#1
68c10guy Registered User Join Date: Mar 2008 Location: Derby, KS Posts: 165	Vibrations after tranny swap yesterday i swapped a brand new rebuilt th350 into my truck. it is a midly built tranny and it has a 2200 boss hog torque converter. Here is my problem, there is a vibration. at any speed it kind of pulses. it does this in park when i rev the engine too. any ideas?

06-28-2009, 10:18 AM	#2
68fixeruper Registered User Join Date: Apr 2006 Location: Amarillo, Tx Posts: 267	Re: Vibrations after tranny swap torque convertor is what id check first make sure bolts are good if everything is ok with the bolts you still could have a bad torque convertor Last edited by 68fixeruper; 06-28-2009 at 10:19 AM.

06-28-2009, 11:43 AM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Vibrations after tranny swap I would unbolt the converter, and rotate it to the next hole, then bolt bolt it back up.

06-28-2009, 10:57 PM	#5
68c10guy Registered User Join Date: Mar 2008 Location: Derby, KS Posts: 165	Re: Vibrations after tranny swap i tried loosening then retightining. i will try the hole idea thoug. Anyone have any mor input? Thanks for everything!

06-28-2009, 11:18 PM	#6
GruntMoanCough Registered User Join Date: May 2009 Location: Pemberton, BC Posts: 1,075	Re: Vibrations after tranny swap Did you happen to change your flex plate as well? __________________ My goal in life is to be as good a person as my dog already thinks I am - Unknown

06-29-2009, 11:22 AM	#7
68c10guy Registered User Join Date: Mar 2008 Location: Derby, KS Posts: 165	Re: Vibrations after tranny swap No flexplate was same as last transmission, and i had no vibration with that one.



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