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karlbenz

08-29-2014 05:54 PM

trans?

what would these trucks have in them for auto transmissions? Thanks

1989 Gmc sierra 3500 dually 454 big block
1988 Chevrolet Dually with a 5.7

54 jimmy

08-29-2014 09:38 PM

Re: trans?

700r4 or possible t400

b454rat

08-30-2014 07:47 AM

Re: trans?

Th400

karlbenz

08-30-2014 07:48 PM

Re: trans?

Thanks, When did they start using the 4l80e?

ChevyTech

08-30-2014 08:44 PM

Re: trans?

Quote:

Originally Posted by karlbenz (Post 6823630)

thanks, when did they start using the 4l80e?

1991

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