front suspension help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tandm1999 · 03-11-2004, 08:26 PM

does anybody know or has any body swapped an early 60's front cross member for a late 60's early 70's front suspension and cross member
im wondering if the cross member from a 1962 will interchange with a crossmember from 1970 any info would be appreciated

mxman · 03-13-2004, 09:15 AM

do you have a late 60s xmember ? why not just use a 73-87

SCOTI · 03-13-2004, 12:18 PM

Yes... any front cross member from late 60's thru 87 will interchange. When using a c-member from the 73-ups, there are a couple of holes in the frame (one on each side) that require 'ovaling' to be able to get the bolts in. The disc brake c-members typically have the larger u-bolts (9/16" vs. 1/2") for mounting the lower control arms & are stronger (plus you can use the late model control arm rubber bushings for a better ride).

tandm1999 · 03-13-2004, 01:12 PM

i have a 72 3/4 ton xmember with 8 lug disc brakes

SCOTI · 03-13-2004, 02:38 PM

Is the crossmember from the 70 3/4 ton going to a 62 3/4 ton frame? I believe the 3/4 ton frames are different (taller) than 1/2 ton frames.

tandm1999 · 03-13-2004, 04:33 PM

yes i have a 62 3/3 ton gmc pickup that i want to put the 72 3/4 ton xmember on

03-11-2004, 08:26 PM	#1
tandm1999 Registered User Join Date: Feb 2004 Location: virginia Posts: 29	front suspension help does anybody know or has any body swapped an early 60's front cross member for a late 60's early 70's front suspension and cross member im wondering if the cross member from a 1962 will interchange with a crossmember from 1970 any info would be appreciated __________________ tommy

03-13-2004, 09:15 AM	#2
mxman Registered User Join Date: Mar 2004 Location: Saskatoon sk Posts: 20	hi do you have a late 60s xmember ? why not just use a 73-87

03-13-2004, 12:18 PM	#3
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,031	Yes... any front cross member from late 60's thru 87 will interchange. When using a c-member from the 73-ups, there are a couple of holes in the frame (one on each side) that require 'ovaling' to be able to get the bolts in. The disc brake c-members typically have the larger u-bolts (9/16" vs. 1/2") for mounting the lower control arms & are stronger (plus you can use the late model control arm rubber bushings for a better ride). __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

03-13-2004, 01:12 PM	#4
tandm1999 Registered User Join Date: Feb 2004 Location: virginia Posts: 29	i have a 72 3/4 ton xmember with 8 lug disc brakes __________________ tommy

03-13-2004, 02:38 PM	#5
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,031	Is the crossmember from the 70 3/4 ton going to a 62 3/4 ton frame? I believe the 3/4 ton frames are different (taller) than 1/2 ton frames. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

03-13-2004, 04:33 PM	#6
tandm1999 Registered User Join Date: Feb 2004 Location: virginia Posts: 29	yes i have a 62 3/3 ton gmc pickup that i want to put the 72 3/4 ton xmember on __________________ tommy

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