4X4 Frame Progress - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67-72williso · 12-25-2005, 07:57 PM

Well I got the 73-up engine & swaybar crossmembers in the 72 SWB frame today. I mounted the engine crossmember in the C series BBC position. Since I`m using a divorced 205 anyway it won`t matter.

4x4Poet · 02-11-2006, 06:13 PM

Interesting. I also plan on using a 73up X-member in a K20 burb frame for facilitating a BBC swap.

For what use is the X-member behind the 73up engine X-member? I don't think I've seen such on a 67-72 4x4 frame. Just the front & engine & tranny X-members (plus X-members further back but not engine/driveline related).

Someone is showing pics of how to install a BBC in a 67-72 4x4 and no one replies? What's up with that?

This site is getting lame. Hopefully our usually sharp board members just missed the fine print in your sig.

You're going with a Clark 5-speed and divorced NP205? Interesting choices. I got a tip. I have a '71 IHC Travelall with a divorced, pass-drop NP205 stock. The inner frame measurements between my '71 K20 burb and the IHC are the same. I measured their inside frame to frame distances with a tape ruler.

I'm confident that one could use a '70s IHC Travelall divorced NP205 to include the cradle w/frame L-brackets mount by simply drilling 2 holes in each frame rail (4 total). The frame cradle is overhead, so you might have sheetmetal clearance issues under the cab. Also no skidplate. I think the IHC NP205 has 32-spline I/O shafts, but I'm not sure because I've never looked. It has 1310 yokes, but 1350 or 1410 yokes would likely fit all around if it has 32-spline shafts.

Keep us posted on your BBC into a 4x4 progress. Keep me posted, at least.

67-72williso · 02-11-2006, 09:00 PM

That crossmember your talking about is the 2 WD bell housing crossmember. This was a 2 WD frame and that crosmember was mounted in the BB posistion so I used that for a starting point. I think I can let it in the frame, it should clear the front driveshaft. The front crossmember is the 73-up swaybar one.
Later Willis

BobS · 02-12-2006, 11:57 AM

Willis,

Do you have any closeups of where the rear hangers for the front springs mount in relation to the rear (bellhousing) crossmember?

Bob

**special-K** · 02-12-2006, 04:29 PM

What springs will you use,the`73-ups?Keep us posted,looks good so far.

67-72williso · 02-12-2006, 06:24 PM

special-K
I will be using 67-72 front springs. I just measured the 73-up from the center of the axle front, to mount the swaybar crossmember. I think it was like 15" front to center of the front swaybar brackets.
Bobs
I`ll try to get you some pictures this week. Also there is a 69 GMC 2500 custom camper V-6 at the local bone yard with motor, NP-435 trans,Dana 60 leaf rear, Its a parts truck. Still has the fender emblems on it.

4bynut · 02-12-2006, 07:03 PM

Looks good!! Real interested in seeing how the rear leafs mount up.

4x4Poet · 02-12-2006, 10:43 PM

Quote:

Originally Posted by 67-72williso

That crossmember your talking about is the 2 WD bell housing crossmember. This was a 2 WD frame and that crosmember was mounted in the BB posistion so I used that for a starting point. I think I can let it in the frame, it should clear the front driveshaft...

You've pulled the cradle crossmember out of a 2wd frame and installed a 73up X-member to throw in a BBC and you'll also switch to leaf springs with a 4x4 conversion???

Excellent!!!

BobS · 02-12-2006, 10:56 PM

If you get a chance to grab those fender emblems for a decent price, I'd appreciate it!

Bob

**Yukon Jack** · 02-13-2006, 02:46 PM

Is interesting how I too missed this post - must have been cause it was during Christmas break. Interesting swap, keep us informed.

12-25-2005, 07:57 PM	#1
67-72williso Junk/Daily Driver Club Join Date: Feb 2004 Location: Manheim, PA 17545 Posts: 253	4X4 Frame Progress Well I got the 73-up engine & swaybar crossmembers in the 72 SWB frame today. I mounted the engine crossmember in the C series BBC position. Since I`m using a divorced 205 anyway it won`t matter. Attached Images __________________ Daily Driver: 1970 C-20 400 sbc,sm-465,Dana 61 one ton SRW rear, 3.07 gears, locker. There are three kinds of people: those who make things happen, those who watch things happen, and those who have no idea what happened! Last edited by 67-72williso; 12-25-2005 at 07:58 PM.

02-11-2006, 06:13 PM	#2
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Interesting. I also plan on using a 73up X-member in a K20 burb frame for facilitating a BBC swap. For what use is the X-member behind the 73up engine X-member? I don't think I've seen such on a 67-72 4x4 frame. Just the front & engine & tranny X-members (plus X-members further back but not engine/driveline related). Someone is showing pics of how to install a BBC in a 67-72 4x4 and no one replies? What's up with that? This site is getting lame. Hopefully our usually sharp board members just missed the fine print in your sig. You're going with a Clark 5-speed and divorced NP205? Interesting choices. I got a tip. I have a '71 IHC Travelall with a divorced, pass-drop NP205 stock. The inner frame measurements between my '71 K20 burb and the IHC are the same. I measured their inside frame to frame distances with a tape ruler. I'm confident that one could use a '70s IHC Travelall divorced NP205 to include the cradle w/frame L-brackets mount by simply drilling 2 holes in each frame rail (4 total). The frame cradle is overhead, so you might have sheetmetal clearance issues under the cab. Also no skidplate. I think the IHC NP205 has 32-spline I/O shafts, but I'm not sure because I've never looked. It has 1310 yokes, but 1350 or 1410 yokes would likely fit all around if it has 32-spline shafts. Keep us posted on your BBC into a 4x4 progress. Keep me posted, at least. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup. Last edited by 4x4Poet; 02-11-2006 at 06:21 PM.

02-11-2006, 09:00 PM	#3
67-72williso Junk/Daily Driver Club Join Date: Feb 2004 Location: Manheim, PA 17545 Posts: 253	Re: 4X4 Frame Progress That crossmember your talking about is the 2 WD bell housing crossmember. This was a 2 WD frame and that crosmember was mounted in the BB posistion so I used that for a starting point. I think I can let it in the frame, it should clear the front driveshaft. The front crossmember is the 73-up swaybar one. Later Willis __________________ Daily Driver: 1970 C-20 400 sbc,sm-465,Dana 61 one ton SRW rear, 3.07 gears, locker. There are three kinds of people: those who make things happen, those who watch things happen, and those who have no idea what happened!

02-12-2006, 11:57 AM	#4
BobS Senior Member Join Date: May 2001 Location: West Central Minnesota Posts: 568	Re: 4X4 Frame Progress Willis, Do you have any closeups of where the rear hangers for the front springs mount in relation to the rear (bellhousing) crossmember? Bob __________________ V-6....only GMC Trucks have it! 62 GMC W5000 NAPCO-V6 65 GMC 2500 NAPCO Panel-V6 66 GMC 1000-V6 66 GMC 1500-V6 67 GMC K1500-SBC (originally a KM-V6) 68 GMC C1500-V6 68 GMC C1500-V6 68 GMC Suburban C2500 70 Chevy K20-SBC 71 Chevy C30 Longhorn-SBC 72 GMC Suburban C1500-BBC 72 Chevy C10-SBC 72 GMC C5500-ToroFlow Diesel

02-12-2006, 04:29 PM	#5
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: 4X4 Frame Progress What springs will you use,the`73-ups?Keep us posted,looks good so far. __________________ "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 ~

02-12-2006, 06:24 PM	#6
67-72williso Junk/Daily Driver Club Join Date: Feb 2004 Location: Manheim, PA 17545 Posts: 253	Re: 4X4 Frame Progress special-K I will be using 67-72 front springs. I just measured the 73-up from the center of the axle front, to mount the swaybar crossmember. I think it was like 15" front to center of the front swaybar brackets. Bobs I`ll try to get you some pictures this week. Also there is a 69 GMC 2500 custom camper V-6 at the local bone yard with motor, NP-435 trans,Dana 60 leaf rear, Its a parts truck. Still has the fender emblems on it. __________________ Daily Driver: 1970 C-20 400 sbc,sm-465,Dana 61 one ton SRW rear, 3.07 gears, locker. There are three kinds of people: those who make things happen, those who watch things happen, and those who have no idea what happened!

02-12-2006, 07:03 PM	#7
4bynut Senior Member Join Date: Mar 2004 Location: Morrison, IL Posts: 793	Re: 4X4 Frame Progress Looks good!! Real interested in seeing how the rear leafs mount up. __________________ 2007 Chevy 2500HD crew cab, 4x4, duramax w/Allison trans. 2001 Chevy ZR2 Ext. cab 4x4 (DD) 1967 Chevy SWB 4x4, BBC, Th400, NP205, 6" lift, and 35's (In Process) 1970 Chevy Blazer 4x4, BBC, TH400, NP241, 6" lift, and 38.5 boggers in front, 44 boggers on the rear ( mud racer project)

02-12-2006, 10:56 PM	#9
BobS Senior Member Join Date: May 2001 Location: West Central Minnesota Posts: 568	Re: 4X4 Frame Progress If you get a chance to grab those fender emblems for a decent price, I'd appreciate it! Bob __________________ V-6....only GMC Trucks have it! 62 GMC W5000 NAPCO-V6 65 GMC 2500 NAPCO Panel-V6 66 GMC 1000-V6 66 GMC 1500-V6 67 GMC K1500-SBC (originally a KM-V6) 68 GMC C1500-V6 68 GMC C1500-V6 68 GMC Suburban C2500 70 Chevy K20-SBC 71 Chevy C30 Longhorn-SBC 72 GMC Suburban C1500-BBC 72 Chevy C10-SBC 72 GMC C5500-ToroFlow Diesel

02-13-2006, 02:46 PM	#10
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	Re: 4X4 Frame Progress Is interesting how I too missed this post - must have been cause it was during Christmas break. Interesting swap, keep us informed. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14



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