Difference: Blazer/Jimmy vs Short Box Frame - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BigCarl · 07-10-2014, 02:50 PM

Is there are difference between a 2wd Short Box Frame and 2wd Blazer frame.

I know the fuel tank is in a different spot, but what about bolt holes, cross members.

Specifically, could you take a Blazer with a rotted frame and swap the body to a short box frame without cutting, welding, fabricating, etc?

**A1971Blazer** · 07-10-2014, 02:59 PM

I think they are a different wheelbase

chuckmc8 · 07-10-2014, 03:02 PM

SWB truck is 9" longer than a Blazer frame and Blazer has different (or additional) body mounts

smbrouss70 · 07-11-2014, 01:05 PM

Wheelbase difference is 11". 104" for the Blazer, 115" for the truck. I was planning to shorten a truck frame and swap the body mount brackets to make a 2wd Blazer frame before I found my 2wd Blazer. There is another member on here that did it, and he told me that all it took was careful measurements to get the body mounts in the right place.

Horatio · 07-12-2014, 02:56 PM

I kinda have a similar question. I have a 72 Blazer with a really rusty body and a 71 SWB step-side in decent condition. Can I drive the Blazer until it falls apart then swap the 4x4 drive-train over to the SWB?

**A1971Blazer** · 07-12-2014, 06:40 PM

Quote:

Originally Posted by Horatio

I kinda have a similar question. I have a 72 Blazer with a really rusty body and a 71 SWB step-side in decent condition. Can I drive the Blazer until it falls apart then swap the 4x4 drive-train over to the SWB?

Any swap is possible........depends on how much you have of these things:

1. Money....you can save it up.
2. Time.......you can't save it up.
3. Know-how......you can learn
4. Tools........>?

BigCarl · 07-18-2014, 09:39 AM

Quote:

Originally Posted by A1971Blazer

Any swap is possible........depends on how much you have of these things:

1. Money....you can save it up.
2. Time.......you can't save it up.
3. Know-how......you can learn
4. Tools........>?

This was initially my though. I have a 2wd short box frame and short stepside box and a 4wd Blazer. What I was thinking was just using the 4wd Blazer frame for the stepside and using the 2wd short frame for the Blazer.

That being said, I don't really feel like cutting up a perfectly good shortbox frame and adding on to a perfectly good blazer frame.

BigCarl · 07-18-2014, 09:42 AM

One more question regarding frames.

I have a 72 4wd blazer, but someone has hacked up the crossmember under the engine to make room for a 454. Are the 67-72 4wd truck crossmembers under the engine the same one as in a Blazer?
Ultimately, I would like to pull the 454 and use it for another project and replace it with a 350 TBI like my 72 GMC Longbox.

BigCarl · 07-19-2014, 03:09 PM

Bump for asking if 4wd truck and 4wd blazers use the same engine cradle/cross member?

07-10-2014, 02:50 PM	#1
BigCarl Registered User Join Date: Sep 2007 Location: Thunder Bay, Ontario Posts: 170	Difference: Blazer/Jimmy vs Short Box Frame Is there are difference between a 2wd Short Box Frame and 2wd Blazer frame. I know the fuel tank is in a different spot, but what about bolt holes, cross members. Specifically, could you take a Blazer with a rotted frame and swap the body to a short box frame without cutting, welding, fabricating, etc?

07-10-2014, 02:59 PM	#2
A1971Blazer Senior Member Join Date: Nov 2013 Location: East Tennessee Posts: 2,198	Re: Difference: Blazer/Jimmy vs Short Box Frame I think they are a different wheelbase

07-10-2014, 03:02 PM	#3
chuckmc8 It's alsways something..... Join Date: Nov 2008 Location: Douglasville GA Posts: 1,171	Re: Difference: Blazer/Jimmy vs Short Box Frame SWB truck is 9" longer than a Blazer frame and Blazer has different (or additional) body mounts __________________ 1968 RS Camaro 'Vert Matching number 327 and M21 Muncie 1968 C10 Black with red interior and orig paint. 5.3 / 4l60e,3:73 POSI 17" Torq Thrusts 1968 CST 514 Red with black interior. Buddy Buckets, Factory A/C, PS, PB- 20" AR custom shop TT, 5.3 and 4l60e

07-11-2014, 01:05 PM	#4
smbrouss70 Registered User Join Date: Sep 2003 Location: Rayne, LA Posts: 2,781	Re: Difference: Blazer/Jimmy vs Short Box Frame Wheelbase difference is 11". 104" for the Blazer, 115" for the truck. I was planning to shorten a truck frame and swap the body mount brackets to make a 2wd Blazer frame before I found my 2wd Blazer. There is another member on here that did it, and he told me that all it took was careful measurements to get the body mounts in the right place. __________________ Steven "If dogs don't go to heaven, when I die I want to go wherever they went." -- Will Rogers R.I.P. Oscar R.I.P. Ratchet 1967 Pontiac GTO - Dad was the Original Owner 1970 Chevy 2wd SWB "Oscar's Truck" 1970 Chevy 2wd Blazer "Ratchet's Blazer" 2013 Chevy 2500HD Crew Cab Duramax/Allison Z71 LTZ "Brown Sugar" 2017 Chevy Suburban "BDB" 2020 Chevy Blazer Premier "Foxy" Member of Louisiana Classic Truck Club (LCTC) Shop Build

07-12-2014, 02:56 PM	#5
Horatio Registered User Join Date: Nov 2011 Location: Denver, Co Posts: 7	Re: Difference: Blazer/Jimmy vs Short Box Frame I kinda have a similar question. I have a 72 Blazer with a really rusty body and a 71 SWB step-side in decent condition. Can I drive the Blazer until it falls apart then swap the 4x4 drive-train over to the SWB?

07-18-2014, 09:42 AM	#8
BigCarl Registered User Join Date: Sep 2007 Location: Thunder Bay, Ontario Posts: 170	Re: Difference: Blazer/Jimmy vs Short Box Frame One more question regarding frames. I have a 72 4wd blazer, but someone has hacked up the crossmember under the engine to make room for a 454. Are the 67-72 4wd truck crossmembers under the engine the same one as in a Blazer? Ultimately, I would like to pull the 454 and use it for another project and replace it with a 350 TBI like my 72 GMC Longbox.

07-19-2014, 03:09 PM	#9
BigCarl Registered User Join Date: Sep 2007 Location: Thunder Bay, Ontario Posts: 170	Re: Difference: Blazer/Jimmy vs Short Box Frame Bump for asking if 4wd truck and 4wd blazers use the same engine cradle/cross member?



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