72 3/4 ton 4x4 trans cross member - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bram · 03-19-2004, 01:04 PM

Did the 72 4x4's have a different style trans cross member than the previous years? I noticed that mine is more of an layed over L shape. |____

Bram · 03-19-2004, 10:41 PM

BTT

Bram · 03-25-2004, 01:15 PM

No one knows?

J.Lance · 03-25-2004, 02:33 PM

I've never noticed a difference.

Bram · 04-05-2004, 11:22 AM

Here is a picture of my trans/transfer case cross member off of my 72 3/4 ton 4x4. It looks a lot different than other’s I've seen. Is this the correct one? Anyone else have this type because I have some questions?

JimKshortstep4x4 · 04-05-2004, 12:00 PM

The 3/4 ton cross members that I have seen are like the 1/2 ton cross members. I have never seen one like the picture.

Jim

Bram · 04-05-2004, 12:39 PM

Does anyone have pictures of the other cross member?

**JIMs70GMC** · 04-05-2004, 12:46 PM

I might have posted some in another thread, let me find the link.

edit: Can't make anything out in the link. I have some pics at home and I'll try and take some of my 71 this evening.

Dean · 04-05-2004, 01:21 PM

I had this one on my computer from my 71 K20. I could take some better ones if needed.

Bram · 04-05-2004, 01:42 PM

Cool thanks.
Has anyone ever seen the one I have before?
I'm wondering if I need to replace it or not, the lower 4 holes on each side line up just fine, but the two holes on the left side piece going up don't? And what you see is all there is to it, no more pieces. I wonder if it ever came with the 72's or not?

griesel72 · 04-05-2004, 01:50 PM

I have the same one as dean for my 3/4 ton 4X4, I've seen the one you pictured under a 78 blazer and a 203 transfer case, but don't know if it's the stock one.

69k5 · 04-05-2004, 02:24 PM

i took apart a 72 3/4 lwb and it was the usual style not like yours. ive never seen one like yours. the one i had was a 465/205 what transfer did yours have?

Bram · 04-05-2004, 02:28 PM

I had a Turbo 350/NP205.

72gord · 04-05-2004, 02:32 PM

I think that L shaped crossmember is off a mid to upper 70's truck, my 72 has the other style, like in the picture. Although the newer style is easier to remove if your dropping the transfer and transmission together!

JimKshortstep4x4 · 04-05-2004, 02:36 PM

I would replace the one you have with one like Dean's picture. It will be much stronger as it picks up both channels of the frame rails.

I suspect that it is not the right one.

Jim

Bram · 04-05-2004, 02:38 PM

I had a weird feeling that something wasn’t right.

Bram · 04-05-2004, 05:36 PM

Is there a difference between the 465/205 and, 350/205 crossmember?

1969 GMC · 04-05-2004, 05:57 PM

i have a 465/221 crossmember that looks just like the one Dean posted. i'm converting to NP205 and it fits just right too.

**JIMs70GMC** · 04-05-2004, 08:57 PM

Bram, Both mine look like Deans.

*Cruiser71* · 04-06-2004, 01:47 AM

I had a 71 and a 72 that looked like the one you have. One was in a 3/4 4x4 and one in a K5. I also owned one that looked like Deans.

Bram · 04-06-2004, 09:45 AM

Now this is getting confusing. So there is a chance this is original? Anyone else have one, or seen one?

**Yukon Jack** · 04-06-2004, 11:01 AM

My 69 K20 and my 70 K5 both have crossmembers that look like Dean's.

*Cruiser71* · 04-06-2004, 03:03 PM

Like I posted, ive had both types. They were on trucks that were orig and from known orig owners. I would say that GM must have used 2 types for some reason. i would think that there may have been more than one plant back in those days. I know for a fact that the K5 was all orig and had the orig 350 turbo/205 tc.. The 72 3/4 4x4 was owned since new and the only trans work was a rebuild in the 2nd year (74) and a shift kit installed. No crossmember was ever changed. That would tell me that they must have had two types available. I know that Ive seen this happen with newer trucks, mid year changes. Also, the 72 was the last year of this body. It may be that the trans crossmember that is also used on the 73 and up truck, also got used on the last trucks built in 72. It also looks like the one in a 76 4x4 I had. I would say, in my opinion, its orig and stock.

Dean · 04-06-2004, 03:34 PM

I'll have to look at my 72 K20 now. Pic was from my 71.....

Bram · 04-06-2004, 04:00 PM

Learn something new every day. This is turning out to be pretty interesting! Does anyone have a picture of the one I have mounted under the vehicle?

03-19-2004, 01:04 PM	#1
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	72 3/4 ton 4x4 trans cross member Did the 72 4x4's have a different style trans cross member than the previous years? I noticed that mine is more of an layed over L shape. \|____ __________________ 72CheyenneSuper1ton4x4BigBlock

03-19-2004, 10:41 PM	#2
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	BTT __________________ 72CheyenneSuper1ton4x4BigBlock

03-25-2004, 01:15 PM	#3
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	No one knows? __________________ 72CheyenneSuper1ton4x4BigBlock

03-25-2004, 02:33 PM	#4
J.Lance Too many is never enough! Join Date: May 2003 Location: Idaho Falls, ID Posts: 455	guess?? I've never noticed a difference. __________________ Jason 1968 K10 SWB Fleetside 1971 K2500 GMC LWB 1968 K20 (later frame, donor body) 1972 C20 LWB parts truck 1993 K2500 Suburban, tow rig, 454, 4L80E NEW!! 18' Siem's car hauler 2004 Honda Odyssey (family man!)

04-05-2004, 11:22 AM	#5
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	Here is a picture of my trans/transfer case cross member off of my 72 3/4 ton 4x4. It looks a lot different than other’s I've seen. Is this the correct one? Anyone else have this type because I have some questions? __________________ 72CheyenneSuper1ton4x4BigBlock

04-05-2004, 12:00 PM	#6
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	The 3/4 ton cross members that I have seen are like the 1/2 ton cross members. I have never seen one like the picture. Jim

04-05-2004, 12:39 PM	#7
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	Does anyone have pictures of the other cross member? __________________ 72CheyenneSuper1ton4x4BigBlock

04-05-2004, 12:46 PM	#8
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	I might have posted some in another thread, let me find the link. edit: Can't make anything out in the link. I have some pics at home and I'll try and take some of my 71 this evening. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm Last edited by JIMs70GMC; 04-05-2004 at 12:50 PM.

04-05-2004, 01:21 PM	#9
Dean Senior Member Join Date: Jan 2000 Location: Cincinnati, Ohio Posts: 1,492	I had this one on my computer from my 71 K20. I could take some better ones if needed. Attached Images

04-05-2004, 01:42 PM	#10
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	Cool thanks. Has anyone ever seen the one I have before? I'm wondering if I need to replace it or not, the lower 4 holes on each side line up just fine, but the two holes on the left side piece going up don't? And what you see is all there is to it, no more pieces. I wonder if it ever came with the 72's or not? __________________ 72CheyenneSuper1ton4x4BigBlock

04-05-2004, 01:50 PM	#11
griesel72 Senior Member Join Date: Apr 2003 Location: Howard, Kansas USA Posts: 1,997	I have the same one as dean for my 3/4 ton 4X4, I've seen the one you pictured under a 78 blazer and a 203 transfer case, but don't know if it's the stock one. __________________ 1969 K10 Custom 10 1997 Z71 2006 Volkswagen Jetta TDI 2006 King Ranch 1980 Wife

04-05-2004, 02:24 PM	#12
69k5 Registered User Join Date: Nov 2003 Location: Monroe, La 71202 Posts: 317	i took apart a 72 3/4 lwb and it was the usual style not like yours. ive never seen one like yours. the one i had was a 465/205 what transfer did yours have?

04-05-2004, 02:28 PM	#13
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	I had a Turbo 350/NP205. __________________ 72CheyenneSuper1ton4x4BigBlock

04-05-2004, 02:32 PM	#14
72gord Never enough time!! Join Date: Mar 2004 Location: sw Wisconsin Posts: 602	I think that L shaped crossmember is off a mid to upper 70's truck, my 72 has the other style, like in the picture. Although the newer style is easier to remove if your dropping the transfer and transmission together!

04-05-2004, 02:36 PM	#15
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	I would replace the one you have with one like Dean's picture. It will be much stronger as it picks up both channels of the frame rails. I suspect that it is not the right one. Jim



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04-05-2004, 02:38 PM	#16
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	I had a weird feeling that something wasn’t right. __________________ 72CheyenneSuper1ton4x4BigBlock

04-05-2004, 05:36 PM	#17
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	Is there a difference between the 465/205 and, 350/205 crossmember? __________________ 72CheyenneSuper1ton4x4BigBlock

04-05-2004, 05:57 PM	#18
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	i have a 465/221 crossmember that looks just like the one Dean posted. i'm converting to NP205 and it fits just right too. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

04-05-2004, 08:57 PM	#19
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Bram, Both mine look like Deans. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

04-06-2004, 01:47 AM	#20
Cruiser71 AKA Phillip Johnson, AKA BANNED Join Date: Feb 2004 Location: Northern Calif. Posts: 193	I had a 71 and a 72 that looked like the one you have. One was in a 3/4 4x4 and one in a K5. I also owned one that looked like Deans.

04-06-2004, 09:45 AM	#21
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	Now this is getting confusing. So there is a chance this is original? Anyone else have one, or seen one? __________________ 72CheyenneSuper1ton4x4BigBlock

04-06-2004, 11:01 AM	#22
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	My 69 K20 and my 70 K5 both have crossmembers that look like Dean's. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

04-06-2004, 03:03 PM	#23
Cruiser71 AKA Phillip Johnson, AKA BANNED Join Date: Feb 2004 Location: Northern Calif. Posts: 193	Like I posted, ive had both types. They were on trucks that were orig and from known orig owners. I would say that GM must have used 2 types for some reason. i would think that there may have been more than one plant back in those days. I know for a fact that the K5 was all orig and had the orig 350 turbo/205 tc.. The 72 3/4 4x4 was owned since new and the only trans work was a rebuild in the 2nd year (74) and a shift kit installed. No crossmember was ever changed. That would tell me that they must have had two types available. I know that Ive seen this happen with newer trucks, mid year changes. Also, the 72 was the last year of this body. It may be that the trans crossmember that is also used on the 73 and up truck, also got used on the last trucks built in 72. It also looks like the one in a 76 4x4 I had. I would say, in my opinion, its orig and stock. Last edited by Cruiser71; 04-06-2004 at 03:06 PM.

04-06-2004, 03:34 PM	#24
Dean Senior Member Join Date: Jan 2000 Location: Cincinnati, Ohio Posts: 1,492	I'll have to look at my 72 K20 now. Pic was from my 71.....

04-06-2004, 04:00 PM	#25
Bram Broke Join Date: Aug 2001 Location: West Plains,MO Posts: 385	Learn something new every day. This is turning out to be pretty interesting! Does anyone have a picture of the one I have mounted under the vehicle? __________________ 72CheyenneSuper1ton4x4BigBlock

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