Bumper ideas - The 1947 - Present Chevrolet & GMC Truck Message Board Network

TNBogger · 02-04-2005, 05:13 PM

I have a 79 GMC that the rear bumper is a little rough on, oh ok a lot rough on. I want to build my own bumper, but I don't know exactly what I want it to look like. If any of you have ever built one I would love to see pics. I am going to be doing some 4-wheeling so I need a bumper that will hold up. Not a show bumper just one to serve its purpose. Or if any of you have any aftermarket bumpers or ones you have made that you would like to sell I would love to hear from you. Thanks
Matthew

1972 · 02-04-2005, 05:20 PM

Here is mine, nothing more than a big ugly piece of pipe. The ends are angled in some and it has a tab on it for a clevis. I can get better pics of it if you want. Strong, easy, and cheap.

Devil'S Ride · 02-05-2005, 01:14 AM

DANG! that is some serious chasis flex dude! nice pic tho.....looks like a bumper that would work well...

uncle_handsome · 02-11-2005, 01:06 AM

I've seen a lot of old 4x4's (80's and earlier) with chassis flex like in the above picture. Is that kind of flex bad for the truck? Can it hurt the body and/or chassis or are these trucks meant to flex under load like the big-rigs? (18 wheelers)

Devil'S Ride · 02-11-2005, 01:48 AM

Mine flexes pritty good as far as chasis twist an such, mebbe its just the angle of that pic.....but it looked pritty wild to me.

My body lines tweak a lil, an mebbe they would twist a lil more if I took the sway bar off....but his just seems a little more radical than mine....

4x4Poet · 02-11-2005, 02:51 AM

Yeah, GM made the 73-8? frames a little too weak. Hence the steering box frame weld-in supports that have been available to stop the box from cracking the frame or even ripping off under stress with fairly large tires (33"-up). The frame should flex some, of course, as all ladder frames do.

I'd like to see some pics of 4x4-worthy rear bumpers, too please.

uncle_handsome · 02-11-2005, 11:56 AM

I hear big-rigs have open-C frames (instead of boxed) so they can flex and not crack under load. Has anyone "boxed" a pickups frame before? Can it cause the frame to crack?

uncle_handsome · 02-11-2005, 12:16 PM

1972, How did you mount that rear bumper? I think it looks sweet!

uncle_handsome · 02-11-2005, 12:18 PM

What's the outside dia. of that pipe?

'71c204x4454 · 02-11-2005, 02:52 PM

Here is a company that makes bumpers and also a kit so you can weld your own up. http://www.4x4iron.com/

Joey-D · 02-11-2005, 08:13 PM

mine is made out of some junior c-channel, I think. It was the front bumper that came on my truck that I changed to the rear when I made a new front. It is like a junior c-hannel with a few more inched of plate on the bottom. 3/8 thick and tree, building, car, ect ect proof. The front bumper is definitaly 10 junior channel

4x4Poet · 02-12-2005, 01:23 AM

Nice link, '71c204x4454. Thanks.

4x4Poet · 02-13-2005, 04:59 AM

ttt

454_72_4X4 · 02-13-2005, 03:41 PM

Here's a pic of the step part if mine. The outsides are 3/16 wall 4x6 tubing and the center is 1/2in plate.
It still needs a bunch of grinding and smoothing and paint and...

!

02-04-2005, 05:13 PM	#1
TNBogger Registered User Join Date: Feb 2005 Location: Lebanon TN Posts: 14	Bumper ideas I have a 79 GMC that the rear bumper is a little rough on, oh ok a lot rough on. I want to build my own bumper, but I don't know exactly what I want it to look like. If any of you have ever built one I would love to see pics. I am going to be doing some 4-wheeling so I need a bumper that will hold up. Not a show bumper just one to serve its purpose. Or if any of you have any aftermarket bumpers or ones you have made that you would like to sell I would love to hear from you. Thanks Matthew

02-05-2005, 01:14 AM	#3
Devil'S Ride Registered User Join Date: Nov 2003 Location: Grants PassOregon Posts: 335	DANG! that is some serious chasis flex dude! nice pic tho.....looks like a bumper that would work well... __________________ The Devil 1983 ONE TON 454/400/208 11" of lift on 44's

02-11-2005, 01:48 AM	#5
Devil'S Ride Registered User Join Date: Nov 2003 Location: Grants PassOregon Posts: 335	Mine flexes pritty good as far as chasis twist an such, mebbe its just the angle of that pic.....but it looked pritty wild to me. My body lines tweak a lil, an mebbe they would twist a lil more if I took the sway bar off....but his just seems a little more radical than mine.... __________________ The Devil 1983 ONE TON 454/400/208 11" of lift on 44's

02-11-2005, 02:51 AM	#6
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Yeah, GM made the 73-8? frames a little too weak. Hence the steering box frame weld-in supports that have been available to stop the box from cracking the frame or even ripping off under stress with fairly large tires (33"-up). The frame should flex some, of course, as all ladder frames do. I'd like to see some pics of 4x4-worthy rear bumpers, too please. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.

02-11-2005, 02:52 PM	#10
'71c204x4454 '71k204x4454 Join Date: Jan 2004 Location: Hood River Or. Posts: 137	Here is a company that makes bumpers and also a kit so you can weld your own up. http://www.4x4iron.com/ __________________ 1971 K20 4x4 1964 buick skylark convertible

02-04-2005, 05:20 PM	#2
1972 Majician Join Date: Nov 2004 Location: In the Middle Posts: 329	Here is mine, nothing more than a big ugly piece of pipe. The ends are angled in some and it has a tab on it for a clevis. I can get better pics of it if you want. Strong, easy, and cheap.

02-11-2005, 01:06 AM	#4
uncle_handsome Uncle H. is this cartoon Join Date: Nov 2004 Location: Mississauga, SC (I wish! lol!) Ontario Posts: 797	I've seen a lot of old 4x4's (80's and earlier) with chassis flex like in the above picture. Is that kind of flex bad for the truck? Can it hurt the body and/or chassis or are these trucks meant to flex under load like the big-rigs? (18 wheelers)

02-11-2005, 11:56 AM	#7
uncle_handsome Uncle H. is this cartoon Join Date: Nov 2004 Location: Mississauga, SC (I wish! lol!) Ontario Posts: 797	I hear big-rigs have open-C frames (instead of boxed) so they can flex and not crack under load. Has anyone "boxed" a pickups frame before? Can it cause the frame to crack?

02-11-2005, 12:16 PM	#8
uncle_handsome Uncle H. is this cartoon Join Date: Nov 2004 Location: Mississauga, SC (I wish! lol!) Ontario Posts: 797	1972, How did you mount that rear bumper? I think it looks sweet!

02-11-2005, 12:18 PM	#9
uncle_handsome Uncle H. is this cartoon Join Date: Nov 2004 Location: Mississauga, SC (I wish! lol!) Ontario Posts: 797	What's the outside dia. of that pipe?

02-11-2005, 08:13 PM	#11
Joey-D City's Articulation Ramp Join Date: Jan 2004 Location: St. Louis Missouri Posts: 452	mine is made out of some junior c-channel, I think. It was the front bumper that came on my truck that I changed to the rear when I made a new front. It is like a junior c-hannel with a few more inched of plate on the bottom. 3/8 thick and tree, building, car, ect ect proof. The front bumper is definitaly 10 junior channel Attached Images __________________ 85 K90 SWB Rockwells 46x19.5 on double beadlocks 20" lift 305/sm465/NP208 Toy 00 Silverado 2wd SWB 4.8 auto 3/4 drop slamair bags esclade rims Daily Driver 06 Harley Sporster 883 low 19?? Zamboni, Really I own a Zamboni! "If your gonna be stupid, then you better be tough."

02-12-2005, 01:23 AM	#12
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Nice link, '71c204x4454. Thanks. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.

02-13-2005, 04:59 AM	#13
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	ttt __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.

02-13-2005, 03:41 PM	#14
454_72_4X4 Registered User Join Date: Apr 2004 Location: N.E. MO Posts: 1,749	Here's a pic of the step part if mine. The outsides are 3/16 wall 4x6 tubing and the center is 1/2in plate. It still needs a bunch of grinding and smoothing and paint and... ! __________________ 72 C20 4X4 454 4 speed 89 Trans Am (was) 305 TPI 700r4 93 C1500 2wd Extended cab 350 700r4 98 Sonoma (TPI outa the Trans Am) 03 Yamaha 660 Raptor 03/04 660 Raptor 07 700 Raptor 85 Honda Odyssey



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