longbox conversion??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dream68 · 02-13-2003, 07:57 PM

Does anyone out there know what a longbox to a shortbox conversion would entail? Has anyone done this? I am definitely thinking of doing this in the near future. Any ideas would be appreciated!!!

JimKshortstep4x4 · 02-13-2003, 08:15 PM

It has been done and there is some good information on it. I would suggest doing a search and try to find E-Fabman's post with pictures. He has a very good method for doing the shortening. Try "frame" search for the last (6) months.

Jim

72MARIO · 02-13-2003, 08:20 PM

Checked the link does not work.

superchevy · 02-13-2003, 10:41 PM

Try this one:

http://67-72chevytrucks.com/vboard/s...ight=cut+frame

Slick71 · 02-13-2003, 10:47 PM

People I've talked to say it isn't too tough. I'd like to do the same thing to my truck if I could find a rust free shortbox. The conversion should just amount to taking some inches out of the middle and a few inches off the back of the frame and putting in new driveshafts and brake lines.

chevjayfsd · 02-14-2003, 12:06 AM

i have done it

PM me with your questions...
I will be glad to help you

Jason

dream68 · 02-14-2003, 01:16 AM

Jason, would you not have to cut down the trailing arms as well?

67cst · 02-14-2003, 01:47 AM

no, trailing arms dont change as far as i know Jim

chevjayfsd · 02-14-2003, 03:41 PM

only thing needing shortening is Frame - 12 In. between cab mounts. 8 in. off back. Brake lines and drive shaft. I may be forgetting something but that's all i think..

even though i did it to my own truck lol

thanks
jason

dream68 · 02-14-2003, 04:05 PM

Thanks Jason. I will get back to you if i get in trouble!!!

Crank · 02-14-2003, 04:16 PM

I thought that in the Totally Polished article on an older truck it took out a pair of bed mounts. I don't even know how many bed mounts there are in each box of these eras. D@mn I really need to get my truck to my house.

Brandon

**nightmare** · 02-14-2003, 04:24 PM

i did it the easy way, went and found a short bed frame, and moved everything else over.

chevjayfsd · 02-14-2003, 04:38 PM

Don't do anything to the bed mounts... they are fine. The only mounts that need to be moved are the cab mounts. Last mount 12. in. back

Jason

72MARIO · 02-14-2003, 06:43 PM

They do need to be removed the pair closest to the cab look at any short box frame and you will see on less pair of mounts... Later Mario

72MARIO · 02-15-2003, 02:15 PM

look at your lwb and notice two of the same stlye mounts you only need one

02-13-2003, 07:57 PM	#1
dream68 Registered User Join Date: Dec 2002 Location: kelowna b.c. canada Posts: 75	longbox conversion??? Does anyone out there know what a longbox to a shortbox conversion would entail? Has anyone done this? I am definitely thinking of doing this in the near future. Any ideas would be appreciated!!! __________________ '68 Chev C-10 '91 Western Star (workin wheels) Just an ole time truckin idiot! Jim G.

02-13-2003, 08:20 PM	#3
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	Checked the link does not work. __________________ 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

02-13-2003, 10:41 PM	#4
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	Try this one: http://67-72chevytrucks.com/vboard/s...ight=cut+frame __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

02-13-2003, 10:47 PM	#5
Slick71 Registered User Join Date: Feb 2001 Location: Savannah, MO. Posts: 513	People I've talked to say it isn't too tough. I'd like to do the same thing to my truck if I could find a rust free shortbox. The conversion should just amount to taking some inches out of the middle and a few inches off the back of the frame and putting in new driveshafts and brake lines. __________________ 1972 Chevy Blazer 4X4 Savannah, MO. www.thefarmatadair.com Last edited by Slick71; 02-13-2003 at 10:51 PM.

02-14-2003, 12:06 AM	#6
chevjayfsd Project 7dos Join Date: Aug 2001 Location: Abilene, Texas Posts: 876	i have done it PM me with your questions... I will be glad to help you Jason __________________ 7DOS - 1972 C-10 350/350 Porterbuilt/Accuair 20x8.5/20x10 Ride Low or Die PSSST - Yes it's bagged. 7dos build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=610290

02-13-2003, 08:15 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	It has been done and there is some good information on it. I would suggest doing a search and try to find E-Fabman's post with pictures. He has a very good method for doing the shortening. Try "frame" search for the last (6) months. Jim

02-14-2003, 01:16 AM	#7
dream68 Registered User Join Date: Dec 2002 Location: kelowna b.c. canada Posts: 75	Jason, would you not have to cut down the trailing arms as well? __________________ '68 Chev C-10 '91 Western Star (workin wheels) Just an ole time truckin idiot! Jim G.

02-14-2003, 01:47 AM	#8
67cst i love summertime Join Date: Jul 2002 Location: Kelowna BC Posts: 4,302	no, trailing arms dont change as far as i know Jim __________________ 1967 shortbox stepside Chevy, 365 hp 327, th400. GLOVE BOX LIGHTS FORSALE, click link for info http://67-72chevytrucks.com/vboard/s...d.php?t=273724

02-14-2003, 03:41 PM	#9
chevjayfsd Project 7dos Join Date: Aug 2001 Location: Abilene, Texas Posts: 876	only thing needing shortening is Frame - 12 In. between cab mounts. 8 in. off back. Brake lines and drive shaft. I may be forgetting something but that's all i think.. even though i did it to my own truck lol thanks jason __________________ 7DOS - 1972 C-10 350/350 Porterbuilt/Accuair 20x8.5/20x10 Ride Low or Die PSSST - Yes it's bagged. 7dos build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=610290

02-14-2003, 04:05 PM	#10
dream68 Registered User Join Date: Dec 2002 Location: kelowna b.c. canada Posts: 75	Thanks Jason. I will get back to you if i get in trouble!!! __________________ '68 Chev C-10 '91 Western Star (workin wheels) Just an ole time truckin idiot! Jim G.

02-14-2003, 04:16 PM	#11
Crank Registered User Join Date: Aug 2002 Location: Crittenden, KY Posts: 1,965	I thought that in the Totally Polished article on an older truck it took out a pair of bed mounts. I don't even know how many bed mounts there are in each box of these eras. D@mn I really need to get my truck to my house. Brandon

02-14-2003, 04:38 PM	#13
chevjayfsd Project 7dos Join Date: Aug 2001 Location: Abilene, Texas Posts: 876	Don't do anything to the bed mounts... they are fine. The only mounts that need to be moved are the cab mounts. Last mount 12. in. back Jason __________________ 7DOS - 1972 C-10 350/350 Porterbuilt/Accuair 20x8.5/20x10 Ride Low or Die PSSST - Yes it's bagged. 7dos build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=610290

02-14-2003, 06:43 PM	#14
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	They do need to be removed the pair closest to the cab look at any short box frame and you will see on less pair of mounts... Later Mario __________________ 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

02-15-2003, 02:15 PM	#15
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	look at your lwb and notice two of the same stlye mounts you only need one Attached Images __________________ 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



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