Trans brace riveted to frame - The 1947 - Present Chevrolet & GMC Truck Message Board Network

keith golanowski · 11-01-2016, 10:56 PM

I'm changing out my 6 cyl 3 speed for 383 turbo 400 combo and I am wondering if the factory brace for the 3 speed trans has to come out and if so anybody have any ideas as to how to the remove the rivets that hold the brace to the frame

Thanks Keith
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kelsfine69 · 11-01-2016, 11:09 PM

Yup, has to come out. I cut the rivits off then drilled and punched them thru...

57larry · 11-02-2016, 08:13 PM

cut the heads off, drill them out

Gmc.guy · 11-02-2016, 09:08 PM

I take a hammer and punch and make a pilot hole with a 1/4" bit then a 7/16". The head pops right off. Then punch the rest out It only takes a few minutes a rivet and no sparks. It's clean and you can put it back in again someday.
You might have trouble with that crossmember, if I remember right here is rivets on top of the frame too?

This is a couple of shots where I took the cab mounts off a donor frame

Gmc.guy · 11-02-2016, 09:11 PM

#2

keith golanowski · 11-03-2016, 03:28 AM

Quote:

Originally Posted by Gmc.guy

#2

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11-01-2016, 10:56 PM	#1
keith golanowski Registered User Join Date: May 2012 Location: calgary ab canada Posts: 7	Trans brace riveted to frame I'm changing out my 6 cyl 3 speed for 383 turbo 400 combo and I am wondering if the factory brace for the 3 speed trans has to come out and if so anybody have any ideas as to how to the remove the rivets that hold the brace to the frame Thanks Keith Posted via Mobile Device

11-02-2016, 08:13 PM	#3
57larry Registered User Join Date: Nov 2007 Location: Indianapolis Posts: 1,161	Re: Trans brace riveted to frame cut the heads off, drill them out

11-02-2016, 09:08 PM	#4
Gmc.guy Registered User Join Date: Nov 2015 Location: Alberta Posts: 464	Re: Trans brace riveted to frame I take a hammer and punch and make a pilot hole with a 1/4" bit then a 7/16". The head pops right off. Then punch the rest out It only takes a few minutes a rivet and no sparks. It's clean and you can put it back in again someday. You might have trouble with that crossmember, if I remember right here is rivets on top of the frame too? This is a couple of shots where I took the cab mounts off a donor frame Attached Images __________________ -Cody

11-02-2016, 09:11 PM	#5
Gmc.guy Registered User Join Date: Nov 2015 Location: Alberta Posts: 464	Re: Trans brace riveted to frame #2 Attached Images __________________ -Cody

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11-01-2016, 11:09 PM	#2
kelsfine69 18 Till I Die Join Date: Mar 2005 Location: Alberta, Canada Posts: 1,522	Re: Trans brace riveted to frame Yup, has to come out. I cut the rivits off then drilled and punched them thru... __________________ 2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home...



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