Rear Suspension Difference - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dave3156 · 02-13-2006, 04:21 PM

I recently purchased a 1969 parts truck and the trailing arms are different on the parts truck than on my 1970. Pictures are attached. The trailing arms on the 69 have an extra mount on the back and what look like helper springs which bolt to the outside of the frame. I have a performance setup (built 350)with 3:73 gears in my truck. Is there an advantage to the helper springs? Is it worth trading out my trailing arms (the ones on the parts truck are in real nice shape)to get the extra stiffness to the rearend?

02-13-2006, 04:21 PM	#1
dave3156 Registered User Join Date: Mar 2004 Location: St. Louis, MO Posts: 336	Rear Suspension Difference I recently purchased a 1969 parts truck and the trailing arms are different on the parts truck than on my 1970. Pictures are attached. The trailing arms on the 69 have an extra mount on the back and what look like helper springs which bolt to the outside of the frame. I have a performance setup (built 350)with 3:73 gears in my truck. Is there an advantage to the helper springs? Is it worth trading out my trailing arms (the ones on the parts truck are in real nice shape)to get the extra stiffness to the rearend? Attached Images Last edited by dave3156; 10-28-2007 at 12:29 PM.



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