Steering boxes, diffence in years or 1/2 - 3/4 ton? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

northerngmc · 06-06-2007, 10:55 PM

Is there a difference in manual steering boxes between 67 - 72?

Is there a difference between 1/2 ton and 3/4 ton?

I believe the box in my 69 GMC 1/2 ton is well worn, but both the boxes in my 70 GMC 3/4 ton and 72 GMC 1/2 ton parts trucks have less play. I am considering swapping one of them into my 69 GMC 1/2 ton.

I did a little research this afternoon on here and I have already adjusted the box in my 69 1/2 ton by turning the screw in on top, but it is now all the way in. I started with about 3/8 of a turn of the wheel in play and now I am down to 1/4 of a turn. I also checked my front steering and everything seems fairly tight and clean, maybe the PO did some work on it? I also tried turing the steering column under the hood and the play appears to be in the box and the arm on the bottom does not move when I trun the column shaft back and forth.

northerngmc · 06-07-2007, 10:32 AM

OK 32 views but nothing, notta....

To simple?

To complex?

Not enough information?

1969k10stepside · 06-07-2007, 10:58 AM

I believe they are the same 1/2 and 3/4 ton but I think 67-69 are different than 71-72.Thats what LMC says and they are usually right when it comes to knowing what part fits what years and models,IMO.

Big Block · 06-07-2007, 12:51 PM

How about C/30 one ton and 1/2 ton box? Want to put p/s on my 1ton dump truck. Is a 605 box the same for 1/2, 3/4and 1ton? Not trying to jack your post.

stllookn · 06-07-2007, 02:12 PM

C10, 20, and 30 series are all the same and interchangeable. Series 40, 50 and 60 were different.

northerngmc · 06-07-2007, 02:28 PM

Quote:

Originally Posted by stllookn

C10, 20, and 30 series are all the same and interchangeable. Series 40, 50 and 60 were different.

Thanks,

Anybody able to confirm if 67-69 are different than 70 - 72?

**70STOVEBOLT** · 06-07-2007, 03:36 PM

Seems like I read on here 68-78 2wd will interchange, something about a dimple on the 67 frame rail that makes a 67 different, but the pittman arm must be used from the donor truck along with the steering box. Somebody chime in and correct me if I'm not correct.

**70STOVEBOLT** · 06-07-2007, 03:37 PM

Don't know about 4wd though.

06-06-2007, 10:55 PM	#1
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Steering boxes, diffence in years or 1/2 - 3/4 ton? Is there a difference in manual steering boxes between 67 - 72? Is there a difference between 1/2 ton and 3/4 ton? I believe the box in my 69 GMC 1/2 ton is well worn, but both the boxes in my 70 GMC 3/4 ton and 72 GMC 1/2 ton parts trucks have less play. I am considering swapping one of them into my 69 GMC 1/2 ton. I did a little research this afternoon on here and I have already adjusted the box in my 69 1/2 ton by turning the screw in on top, but it is now all the way in. I started with about 3/8 of a turn of the wheel in play and now I am down to 1/4 of a turn. I also checked my front steering and everything seems fairly tight and clean, maybe the PO did some work on it? I also tried turing the steering column under the hood and the play appears to be in the box and the arm on the bottom does not move when I trun the column shaft back and forth. __________________ Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is!

06-07-2007, 10:32 AM	#2
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Re: Steering boxes, diffence in years or 1/2 - 3/4 ton? OK 32 views but nothing, notta.... To simple? To complex? Not enough information? __________________ Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is!

06-07-2007, 10:58 AM	#3
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,020	Re: Steering boxes, diffence in years or 1/2 - 3/4 ton? I believe they are the same 1/2 and 3/4 ton but I think 67-69 are different than 71-72.Thats what LMC says and they are usually right when it comes to knowing what part fits what years and models,IMO.

06-07-2007, 12:51 PM	#4
Big Block Big Block Join Date: Mar 2005 Location: Durham, N.C. Posts: 1,649	Re: Steering boxes, diffence in years or 1/2 - 3/4 ton? How about C/30 one ton and 1/2 ton box? Want to put p/s on my 1ton dump truck. Is a 605 box the same for 1/2, 3/4and 1ton? Not trying to jack your post.

06-07-2007, 02:12 PM	#5
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Re: Steering boxes, diffence in years or 1/2 - 3/4 ton? C10, 20, and 30 series are all the same and interchangeable. Series 40, 50 and 60 were different. __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary) Last edited by stllookn; 06-07-2007 at 02:13 PM.

06-07-2007, 03:36 PM	#7
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,266	Re: Steering boxes, diffence in years or 1/2 - 3/4 ton? Seems like I read on here 68-78 2wd will interchange, something about a dimple on the 67 frame rail that makes a 67 different, but the pittman arm must be used from the donor truck along with the steering box. Somebody chime in and correct me if I'm not correct. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear

06-07-2007, 03:37 PM	#8
70STOVEBOLT Senior Member Join Date: Jun 2005 Location: Winona Lake, IN Posts: 6,266	Re: Steering boxes, diffence in years or 1/2 - 3/4 ton? Don't know about 4wd though. __________________ 70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear



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