post pics of your welded backhalfs!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Project86 · 02-01-2016, 03:17 AM

Trying to get some ideas as to where to tie in a welded backhalf kit. I'm looking at a $900 kit from checkeredracing

If you have a welded backhalf please post a pic if you can of where it is welded to the stock c channel frame.

My truck is a 86 c10.

Marv D · 02-01-2016, 08:22 AM

For my 66 the stock frame width just behind the cab happen to be perfect width to slide the 2x3 frame rails inside the stock frame and I ran weld along 12+" of the stub laying inside the bottom of the frame "C".
Sorry...
Figures that I can't find not one silly picture of the graft of the Alston 4link frame rail kit to the stock frame.

vin63 · 02-01-2016, 10:40 AM

What will be your wheelbase length? The "where" will be determined by that wheelbase measurement.

Project86 · 02-02-2016, 04:57 AM

My wheelbase will be stock. Can't remember the exact measurement. But I'm more or less looking for ideas of "how" someone welded it in. Did you box the frame rails behind the cab? Simply welded it to the original frame? Did you notch it to fit in the frame rails then welded it?

That's more or less what I'm trying to figure out.

vin63 · 02-02-2016, 10:09 AM

Back-half kits for trucks and G-body cars, etc. that have relatively wide-set factory frame rails, if there is no roll cage, I usually build outrigger sub structures to tie the back-half frame into the original frame. I also butt weld the crossmember to the OE frame. This helps adds a little more torsional and shear strength without rearward bars coming off of the main hoop. I would advise boxing the OE frame.

This photo shows a similar type of outrigger that I use to tie a back half kit with no roll cage. However, this kit does not have the crossmember extend beyond the width of the kit's frame rail.

I believe this is a Checkered Racing back half kit. Note the crossmember extends passed the frame rails. I would butt weld those ends to the OE frame in addition to outrigger extensions.

Project86 · 02-04-2016, 04:27 AM

So could I box the portion of the frame behind the cab, then trim the backhalf crossmember to butt up against the portion I box, then be safe to create some sort of outriggers?
I was thinking some triangular supports to the the frame into the crossmember as well.

AldoWelds · 02-09-2016, 01:22 PM

One of our more recent backhalf trucks. Dipped into the 7's within a week of finishing up the turbo kit and back half

02-01-2016, 03:17 AM	#1
Project86 Registered User Join Date: Oct 2013 Location: Biloxi MS Posts: 259	post pics of your welded backhalfs!! Trying to get some ideas as to where to tie in a welded backhalf kit. I'm looking at a $900 kit from checkeredracing If you have a welded backhalf please post a pic if you can of where it is welded to the stock c channel frame. My truck is a 86 c10.

02-01-2016, 08:22 AM	#2
Marv D Registered Truck Offender Join Date: May 2008 Location: hells training ground (aka Ariz) Posts: 3,118	Re: post pics of your welded backhalfs!! For my 66 the stock frame width just behind the cab happen to be perfect width to slide the 2x3 frame rails inside the stock frame and I ran weld along 12+" of the stub laying inside the bottom of the frame "C". Sorry... Figures that I can't find not one silly picture of the graft of the Alston 4link frame rail kit to the stock frame. __________________ Still playin with trucks, even at my age! When you're dead, it's only a problem for the people around you, because you don't know you're dead. .....It's kinda the same when your STUPID. I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral.

02-01-2016, 10:40 AM	#3
vin63 It's Better With Nitro Join Date: Apr 2008 Location: Chino Hills, CA Posts: 2,262	Re: post pics of your welded backhalfs!! What will be your wheelbase length? The "where" will be determined by that wheelbase measurement. __________________ 1963 C-10: Deluxe-optioned cab, shortbed, fleetside Pontiac 462 ci, Kauffman D-Port alum. heads 4L80E, narrowed sheetmetal Ford 9-inch Tubular front and rear suspension Custom 6-piston front disc and 4-piston rear disc brakes

02-02-2016, 04:57 AM	#4
Project86 Registered User Join Date: Oct 2013 Location: Biloxi MS Posts: 259	Re: post pics of your welded backhalfs!! My wheelbase will be stock. Can't remember the exact measurement. But I'm more or less looking for ideas of "how" someone welded it in. Did you box the frame rails behind the cab? Simply welded it to the original frame? Did you notch it to fit in the frame rails then welded it? That's more or less what I'm trying to figure out.

02-02-2016, 10:09 AM	#5
vin63 It's Better With Nitro Join Date: Apr 2008 Location: Chino Hills, CA Posts: 2,262	Re: post pics of your welded backhalfs!! Back-half kits for trucks and G-body cars, etc. that have relatively wide-set factory frame rails, if there is no roll cage, I usually build outrigger sub structures to tie the back-half frame into the original frame. I also butt weld the crossmember to the OE frame. This helps adds a little more torsional and shear strength without rearward bars coming off of the main hoop. I would advise boxing the OE frame. This photo shows a similar type of outrigger that I use to tie a back half kit with no roll cage. However, this kit does not have the crossmember extend beyond the width of the kit's frame rail. I believe this is a Checkered Racing back half kit. Note the crossmember extends passed the frame rails. I would butt weld those ends to the OE frame in addition to outrigger extensions. __________________ 1963 C-10: Deluxe-optioned cab, shortbed, fleetside Pontiac 462 ci, Kauffman D-Port alum. heads 4L80E, narrowed sheetmetal Ford 9-inch Tubular front and rear suspension Custom 6-piston front disc and 4-piston rear disc brakes

02-04-2016, 04:27 AM	#6
Project86 Registered User Join Date: Oct 2013 Location: Biloxi MS Posts: 259	Re: post pics of your welded backhalfs!! So could I box the portion of the frame behind the cab, then trim the backhalf crossmember to butt up against the portion I box, then be safe to create some sort of outriggers? I was thinking some triangular supports to the the frame into the crossmember as well.

02-09-2016, 01:22 PM	#7
AldoWelds Registered User Join Date: Feb 2016 Location: Houston Posts: 17	Re: post pics of your welded backhalfs!! One of our more recent backhalf trucks. Dipped into the 7's within a week of finishing up the turbo kit and back half

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