72 GMC rear bumper brackets mount at an angle?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevydog66 · 05-15-2005, 10:52 PM

Do the rear bumper brackets mount at an angle or just lay flat in the frame rail? I have the chrome sport bumper. It's not a step bumper.

72MARIO · 05-15-2005, 11:07 PM

Angle.

front of the bracket up.

69 Short Fleet · 05-15-2005, 11:10 PM

The 4 sport bumper brackets (2, inner) go straight out in-line with the frame rails and then bend 90 deg. and rest flat parellel to the bumper. The outer brackets (2) bolt flat against the inner brackets and then bend outward at a 45 deg. angle and go toward the outer bumper bolt holes they then bend once more to rest flat against the bumper. I found that they are not an exact fit so you may have to "tweek them a bit" (the out brackets). One thing I've found is be VERY careful tightening the bumper bolts as you can wind up bending the bumper bolt hole locations (on the bumper itself, front one also) as the metal on the bumpers is a LOT softer than I first anticipated. Hope this helps, Doug

chevydog66 · 05-16-2005, 10:56 PM

I looked at a Chevy rear bumper bracket with the same bumper as mine and the inner (longer) bumper brackets were mounted at an angle.

69 Short Fleet · 05-17-2005, 04:24 AM

Hmmm, I've never seen that before (for a sport bumper). Do you have a LMC truck parts catalog? It shows it quite clearly, I don't have a pic from it but maybe someone will post one. Doug

05-15-2005, 10:52 PM	#1
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	72 GMC rear bumper brackets mount at an angle?? Do the rear bumper brackets mount at an angle or just lay flat in the frame rail? I have the chrome sport bumper. It's not a step bumper. __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up

05-15-2005, 11:07 PM	#2
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	Angle. front of the bracket up. __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

05-16-2005, 10:56 PM	#4
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	I looked at a Chevy rear bumper bracket with the same bumper as mine and the inner (longer) bumper brackets were mounted at an angle. __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up

05-15-2005, 11:10 PM	#3
69 Short Fleet Registered User Join Date: Nov 2002 Location: Kelowna B.C. Canada Posts: 1,086	The 4 sport bumper brackets (2, inner) go straight out in-line with the frame rails and then bend 90 deg. and rest flat parellel to the bumper. The outer brackets (2) bolt flat against the inner brackets and then bend outward at a 45 deg. angle and go toward the outer bumper bolt holes they then bend once more to rest flat against the bumper. I found that they are not an exact fit so you may have to "tweek them a bit" (the out brackets). One thing I've found is be VERY careful tightening the bumper bolts as you can wind up bending the bumper bolt hole locations (on the bumper itself, front one also) as the metal on the bumpers is a LOT softer than I first anticipated. Hope this helps, Doug

05-17-2005, 04:24 AM	#5
69 Short Fleet Registered User Join Date: Nov 2002 Location: Kelowna B.C. Canada Posts: 1,086	Hmmm, I've never seen that before (for a sport bumper). Do you have a LMC truck parts catalog? It shows it quite clearly, I don't have a pic from it but maybe someone will post one. Doug



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