Differences between '73-'87 front crossmember and '67-'72 ?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

REPO1 · 09-29-2003, 12:22 PM

What are the main differences between the front suspension crossmember on a '73 - '87 1/2 ton and a the older '67 - '72 trucks?

Mainly I am wondering about the mounting points of the lower control arm. Do the newer style trucks use U clamps to mount them like the older one I have?

I already know the newer one will bolt in, and the newer ones use larger rubber bushings and such. Can I use a newer style lower control arm in my '70 crossmember?

Thanks for the help!

phantom dually · 09-29-2003, 09:26 PM

It should bolt right in from what I have read here. I have a 83 and ordered a notch crossmember from turner enterprises in California and he sells mainly 67-72 parts. It will work.

Tx Firefighter · 09-30-2003, 12:26 PM

Quote:

Originally posted by REPO1
I already know the newer one will bolt in, and the newer ones use larger rubber bushings and such. Can I use a newer style lower control arm in my '70 crossmember?

Thanks for the help!

Yes, they bolt right onto the older crossmember, both uppers and lowers. The later lowers mount with the little u-bolts just like the 67-72 ones.

Kevin

72c5 · 03-31-2004, 12:40 AM

What about the crossmembers? Will the '73-'87 bolt into a '69 frame? I want to get rid of the leafs in a '69 blazer.....

09-29-2003, 12:22 PM	#1
REPO1 Shortbox wanna-be. Join Date: Mar 2002 Location: Fort St.John, British Columbia, Canada Posts: 773	Differences between '73-'87 front crossmember and '67-'72 ?? What are the main differences between the front suspension crossmember on a '73 - '87 1/2 ton and a the older '67 - '72 trucks? Mainly I am wondering about the mounting points of the lower control arm. Do the newer style trucks use U clamps to mount them like the older one I have? I already know the newer one will bolt in, and the newer ones use larger rubber bushings and such. Can I use a newer style lower control arm in my '70 crossmember? Thanks for the help! __________________ 1970 Chevy C20 Custom Camper 402BB Turbo 400 trans. (Slowly becoming a '70 shortbox 1/2 ton) '71 Camaro SS 402/T400 resto '97 Z28 (11.41@127MPH)

09-29-2003, 09:26 PM	#2
phantom dually Project92 SWB stepside Join Date: Feb 2003 Location: Louisville KY Posts: 4,792	It should bolt right in from what I have read here. I have a 83 and ordered a notch crossmember from turner enterprises in California and he sells mainly 67-72 parts. It will work. __________________ 92 C1500 stepside 496 Stroker Competiton Engineering Ladder bars/QA1 coilovers. Dana 60 rear with 4.10 gear and posi. Bonspeed Palisade 20x12 in rear w/335/30/20 and 20x8.5 front w/245/40/20. 5/8 drop with Belltech springs/DJM spindles/drop shocks. WWS Progress thread http://67-72chevytrucks.com/vboard/s...d.php?t=140448

03-31-2004, 12:40 AM	#4
72c5 Registered User Join Date: Dec 2003 Location: Boston Posts: 311	What about the crossmembers? Will the '73-'87 bolt into a '69 frame? I want to get rid of the leafs in a '69 blazer.....



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