4x4 Frame questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

arkracing · 01-27-2005, 05:09 PM

Will a '67-'72 cab fit on a '73+ 4x4 Frame.

I know that the rear cab mounts are different - the 67-72 mount outside the frame and the 73+ mount inside. which would be an easy fix...just get some mounts off a 67-72 and put them on the outside.

any other differances? Wheelbase? Width? Length? is the "kickup area" on a differant angle?

Thanks

**CPNE** · 01-27-2005, 05:13 PM

You should talk to Mudder67. His is a 67 body on a 73-87 frame.

Mudder · 01-28-2005, 04:08 AM

Has worked very well for me.

*1FaastC10* · 01-28-2005, 05:33 PM

what did you have to modify to make it work?

Mudder · 01-29-2005, 04:54 AM

Shortened the frame, and rear brake lines. Used the old cab mounts on the outside of the 77 frame. Pretty much the same holes that was used for the 77 mounts. Made a plate on top of the front spring perch for the front clip. Low hump so used a body lift. Cut some blocks and added to others to get things straight. Used the Master and Booster that came on the 67 (drum brakes). Added a ujoint to the steering column. Brakes work great. Disk all the way around work even better. Cant think of anything else.

Mudder · 01-29-2005, 04:56 AM

Wanna see some pics? cab mounts.

jeffspower · 01-30-2005, 01:32 AM

Did the frame horns stick out too far to mount the factory front bumper? Was your frame '80 down or '81 up?

Mudder · 01-30-2005, 02:00 AM

77 chasis. We mounted the bumper in a way to be as close to legal in Missouri as we could. Cant remember how far it stuck out. The frame was too low to be mounted in the factory position.

arkracing · 01-30-2005, 11:33 PM

1. how much did you have to take out of the frame?

2. if i have a high hump cab will i still need to do a body lift or will it bolt down when i put the rear mounts on the outside of the frame? - i heard something about clearance issues on the rear pan of the cab with the frame??? heard of this??? i thought i read it in another post here on the site...about 2x4's but i can't remember

3. does the support line up with the mount holes on the 73+ frame? - no modifacation to get the nose of the truck to fit? - basically bolt on other than the "bumper issue"

Thanks Mudder.
maybe you should do a short write up in the FAQ section about this..if you have time, can remember all you had to do and are willing to...just a suggestion

01-27-2005, 05:09 PM	#1
arkracing Weekend Warrior Join Date: Oct 2004 Location: CT Posts: 1,787	4x4 Frame questions Will a '67-'72 cab fit on a '73+ 4x4 Frame. I know that the rear cab mounts are different - the 67-72 mount outside the frame and the 73+ mount inside. which would be an easy fix...just get some mounts off a 67-72 and put them on the outside. any other differances? Wheelbase? Width? Length? is the "kickup area" on a differant angle? Thanks __________________ -'07 GMC Sierra K2500HD -'66 C10 Suburban -'68/'71 K20 Service Bed Project -'69 Chevy C30 Mason Dump -'33Ford P/U 396ChevyPowered

01-27-2005, 05:13 PM	#2
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	You should talk to Mudder67. His is a 67 body on a 73-87 frame. __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

01-29-2005, 04:56 AM	#6
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	Wanna see some pics? cab mounts. Attached Images

01-30-2005, 01:32 AM	#7
jeffspower Well, Whoop-dee-do! Join Date: Mar 2003 Location: Easton, Mo. pop.- me & scarcely a few others Posts: 2,302	Did the frame horns stick out too far to mount the factory front bumper? Was your frame '80 down or '81 up? __________________ '68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car

01-30-2005, 02:00 AM	#8
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	77 chasis. We mounted the bumper in a way to be as close to legal in Missouri as we could. Cant remember how far it stuck out. The frame was too low to be mounted in the factory position. Last edited by Mudder; 01-30-2005 at 02:29 AM.

01-28-2005, 04:08 AM	#3
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	Has worked very well for me.

01-28-2005, 05:33 PM	#4
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,400	what did you have to modify to make it work?

01-29-2005, 04:54 AM	#5
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	Shortened the frame, and rear brake lines. Used the old cab mounts on the outside of the 77 frame. Pretty much the same holes that was used for the 77 mounts. Made a plate on top of the front spring perch for the front clip. Low hump so used a body lift. Cut some blocks and added to others to get things straight. Used the Master and Booster that came on the 67 (drum brakes). Added a ujoint to the steering column. Brakes work great. Disk all the way around work even better. Cant think of anything else.

01-30-2005, 11:33 PM	#9
arkracing Weekend Warrior Join Date: Oct 2004 Location: CT Posts: 1,787	1. how much did you have to take out of the frame? 2. if i have a high hump cab will i still need to do a body lift or will it bolt down when i put the rear mounts on the outside of the frame? - i heard something about clearance issues on the rear pan of the cab with the frame??? heard of this??? i thought i read it in another post here on the site...about 2x4's but i can't remember 3. does the support line up with the mount holes on the 73+ frame? - no modifacation to get the nose of the truck to fit? - basically bolt on other than the "bumper issue" Thanks Mudder. maybe you should do a short write up in the FAQ section about this..if you have time, can remember all you had to do and are willing to...just a suggestion __________________ -'07 GMC Sierra K2500HD -'66 C10 Suburban -'68/'71 K20 Service Bed Project -'69 Chevy C30 Mason Dump -'33Ford P/U 396ChevyPowered



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