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11-26-2009, 01:46 AM | #1 |
Texas Big Wig
Join Date: Jan 2007
Location: Mineola, Texas
Posts: 5,620
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2WD & 4x4 frame differences
Hey guys, not sure if I shoulda posted this in the 4x4 section or what, but here it is
Can someone explain to me the differences between 2WD & 4x4 frames... Particularly 67 frames Thanks, Matt |
11-26-2009, 08:28 AM | #2 |
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Join Date: Apr 2005
Location: Monroe, WA
Posts: 298
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Re: 2WD & 4x4 frame differences
From what I have seen...
In the rear... Most 2wd's are coil sprung rear, so the cross member and mounting points will be different. Coil springs have the cross member at the top for the spring and one in front of the axle for the suspension arms(track bar?). 4x4's are leaf sprung. Perches at each corner of the leafs (4 total). In the front... 2wd's have a big, riveted in cross member which the A arms and coils attach to. 4x4's have spring perches in front under the radiator core support and shackles/mounts back just before the front cab mount. The transmission cross member is different. 4x4 mounts between the transmission and transfer case. I hope this helps. It is just what I know, definatly not everything. I know many people do conversions. Check the 4x4 board and also look in that section for different builds.
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67 K10, lwb, fleetside, 327, 4spd, 205, cab and 3/4 frame swap, 14 bolt, big window, and a "rustoleum roll job" |
11-26-2009, 11:34 AM | #3 |
Texas Big Wig
Join Date: Jan 2007
Location: Mineola, Texas
Posts: 5,620
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Re: 2WD & 4x4 frame differences
Thanks, I pretty much knew all the common stuff
I just dont know if there are any real differences in the frames, or is it just the brackets & cross members |
11-26-2009, 04:23 PM | #5 |
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Join Date: Sep 2008
Location: CASA GRANDE AZ
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Re: 2WD & 4x4 frame differences
I think the front of the frame kicks up abit on a 4x4 about a inch and the rear wount curve out like on coil spring trucks atleast that how it seems on my blazer
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11-27-2009, 10:36 AM | #6 |
Special Order
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Re: 2WD & 4x4 frame differences
That`s it,other than crossmembers.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
11-27-2009, 12:09 PM | #7 |
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Join Date: Jul 2001
Location: Muskegon,MI,USA
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Re: 2WD & 4x4 frame differences
The two wheel drive truck frames, (both coil and leaf spring) are wider at the kickup area over the rear end. The 2 wd frames are 38 1/2" wide and the 4 wd frames are 34 1/2" wide.
Jim
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1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
11-27-2009, 03:01 PM | #8 |
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Join Date: Aug 2003
Location: Lubbock, Texas
Posts: 2,443
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Re: 2WD & 4x4 frame differences
Some of the brackets and cross members are different for sure,but you could change some of that. The real difference as stated before is the frame rails themselves. A 2wd like in the pic goes up and out at the rear end. ( This is true even a a leaf 2wd) On a 4x4 frame the frame rails in this area are as straight as a board. I don't have a pic of a 4x4, but I will see if I can find one.
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72 Cheyenne Super 80 Silverado Blazer 2wd |
11-27-2009, 05:13 PM | #9 |
6>8 Plugless........
Join Date: Sep 2007
Location: Prairie City, Ia
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Re: 2WD & 4x4 frame differences
The portion of the frame where the steering box bolts on is a little different as well. You can see in this pic.
That is a steering box brace from a K5 blazer. It isn't off much, but it's still off. And the frame is a 72 3/4 ton Longhorn, so this may not apply to your frame.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. Last edited by Dieselwrencher; 11-27-2009 at 05:14 PM. |
11-27-2009, 05:30 PM | #10 |
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Re: 2WD & 4x4 frame differences
It would not be to difficult then to swap a 2wd truck and 4wd blazer like for like then? If a guy wanted to build a 2wd blazer that is.
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11-27-2009, 05:32 PM | #11 |
6>8 Plugless........
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Re: 2WD & 4x4 frame differences
I'm sure you could bolt in all the 2wd stuff in a 4wd frame. But I don't think I would do it.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
11-27-2009, 05:36 PM | #12 |
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Location: Buckeye, Arizona
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Re: 2WD & 4x4 frame differences
well...some would say not to cut a suburban down and build a four door but when all is said and done it makes for extreme coolness
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11-27-2009, 08:15 PM | #14 |
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Location: Buckeye, Arizona
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Re: 2WD & 4x4 frame differences
what are you going to build spraybomb?
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11-27-2009, 08:32 PM | #16 |
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Join Date: Jul 2008
Location: Buckeye, Arizona
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Re: 2WD & 4x4 frame differences
love that, will be badazz. I really think i'm going to try that body swap. My dad has a 71 short, will be mine someday...later than sooner hopefully
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11-27-2009, 09:29 PM | #17 |
6>8 Plugless........
Join Date: Sep 2007
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Re: 2WD & 4x4 frame differences
I've seen guys put leaf springs on the coil spring 2wd frames. As a matter of fact Leon, Lockdoc, has a coil spring frame with leaf springs on it at his place. Maybe he could snap some pics for you. I'd just use your frame unless you can find a 4x4 frame easily.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
11-27-2009, 09:52 PM | #18 |
I dun gradjiated collij!!!
Join Date: Jan 2006
Location: St. Helens Oregon
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Re: 2WD & 4x4 frame differences
I have a factory leaf sprung 1/2 ton 2wd frame. It has the same dimensions as my c10 coil sprung frame... If you want pics I can post some for ya.
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Built NOT Bought. Viper Red 1971 LWB C10 355 Vortec W/700R4 4/5 drop AKA Screamin' You are missed!
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11-27-2009, 10:39 PM | #19 |
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Re: 2WD & 4x4 frame differences
a short bed frame is longer than a blazer frame but you can add all 2wd stuff to a 4wd frame without too much difficulty
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