56 and 58 GMC LWB frame lengths - The 1947 - Present Chevrolet & GMC Truck Message Board Network

pmiller · 12-17-2004, 05:49 PM

I'm trying to figure out why GMC made 2 LWB's (not including the SWB) in 1957. The 89" and the 97". Can anyone tell me what the length of the LWB frame for a 56 GMC and a 58 GMC is? I looked in a book I have and it said that the LWB frames from 55-59 are the same. I'm not so sure about that.

Apache · 12-17-2004, 06:19 PM

GMC and Chevy both had a SWB and 2 LWB lengths I believe (i know chevy did). Id imagine the chevys had the same 3 frame lengths as the GMC's. Id have to look up the exact lenghts of all 3 frames from 55-59, sorry I dont know them right off the top of my head. I did have a brochure I had bought for 58 chevy's (got it after I got my truck), that had the lenghts and weights of the 3 different sizes but I cant find the brochure at this time.

rico_bob · 01-02-2005, 12:06 AM

Chevy Long Beds were 89 inches from second series 1955 to 1957. In 1957 They increased the bed length from 89 to 97 inches. I am not 100% positive but believe GMC followed the same changes as Chevy.

55-59 short beds are indicated as 77-1/4" or sometimes 77-1/8" Why ? I'm not sure.

My two cents worth. ricobob

www.ricos-rods-and-relics.com

12-17-2004, 05:49 PM	#1
pmiller Registered User Join Date: Feb 2003 Location: Chicago, IL Posts: 20	56 and 58 GMC LWB frame lengths I'm trying to figure out why GMC made 2 LWB's (not including the SWB) in 1957. The 89" and the 97". Can anyone tell me what the length of the LWB frame for a 56 GMC and a 58 GMC is? I looked in a book I have and it said that the LWB frames from 55-59 are the same. I'm not so sure about that.

12-17-2004, 06:19 PM	#2
Apache Registered User Join Date: Jun 2004 Location: South Carolina Posts: 419	GMC and Chevy both had a SWB and 2 LWB lengths I believe (i know chevy did). Id imagine the chevys had the same 3 frame lengths as the GMC's. Id have to look up the exact lenghts of all 3 frames from 55-59, sorry I dont know them right off the top of my head. I did have a brochure I had bought for 58 chevy's (got it after I got my truck), that had the lenghts and weights of the 3 different sizes but I cant find the brochure at this time. __________________ 54 Chevy Bel Air 4dr powerglide 54 Chevy SWB 58 Chevy Big Window SWB Fleetside project 58 Chevy LWB 235/4spd 76 Chevy Nova 350/TH350 4.88's *10kmiles on "new" engine 79 Chevy 4x4 SWB 350/4spd 3/4 ton 81 Mazda RX7 84 F@!d Mustang 96 F@!d Ranger 2.3L/5spd

01-02-2005, 12:06 AM	#3
rico_bob "Treasure the Ride" Join Date: Nov 2001 Location: Mid Michigan, Harrison Michigan, USA Posts: 682	Chevy Long Beds were 89 inches from second series 1955 to 1957. In 1957 They increased the bed length from 89 to 97 inches. I am not 100% positive but believe GMC followed the same changes as Chevy. 55-59 short beds are indicated as 77-1/4" or sometimes 77-1/8" Why ? I'm not sure. My two cents worth. ricobob www.ricos-rods-and-relics.com __________________ If you think you can you're right. If you think you can't you're still right. Trucks: '56 SWB; '57 SWB; '63 C-10 Current projects: 1963 Long Fleetside for the wife! '56 for the daughter. Visit us at: www.ricos-rods-and-relics.com



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