Distance between axle perches? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Trackman101 · 12-31-2016, 10:24 PM

I am converting a 71 GMC from leaf springs to the Ridetech trailing arm coil over set up. I need to know the stock distance between the axle perches.
Any help would be appreciated.

Jrainman · 01-01-2017, 11:14 AM

Being that the perches a set on a angle and also there are many obstructions to get a straight line from perch to perch , it would make it a good gestamate at best for the distance mesured between both perches .......... My gustament tells me from rear Ubolt hole center to hole center would be 41'' 1/2''

Trackman101 · 01-01-2017, 12:01 PM

Thank you for taking the time to measure.That helps me out.

smbrouss70 · 01-24-2017, 08:21 PM

You may have already set up your rear end, but here is an old thread where I took some measurements.

http://67-72chevytrucks.com/vboard/s...d.php?t=217421

Trackman101 · 01-24-2017, 10:12 PM

Thanks for the link. I haven't welded them on yet so I can still tweak them. Trying to figure out where to set my pinion angle then I weld them up.

12-31-2016, 10:24 PM	#1
Trackman101 Registered User Join Date: Jul 2015 Location: Alberta Posts: 161	Distance between axle perches? I am converting a 71 GMC from leaf springs to the Ridetech trailing arm coil over set up. I need to know the stock distance between the axle perches. Any help would be appreciated.

01-01-2017, 11:14 AM	#2
Jrainman Registered User Join Date: Jul 2015 Location: North East PA Posts: 682	Re: Distance between axle perches? Being that the perches a set on a angle and also there are many obstructions to get a straight line from perch to perch , it would make it a good gestamate at best for the distance mesured between both perches .......... My gustament tells me from rear Ubolt hole center to hole center would be 41'' 1/2''

01-01-2017, 12:01 PM	#3
Trackman101 Registered User Join Date: Jul 2015 Location: Alberta Posts: 161	Re: Distance between axle perches? Thank you for taking the time to measure.That helps me out.

01-24-2017, 08:21 PM	#4
smbrouss70 Registered User Join Date: Sep 2003 Location: Rayne, LA Posts: 2,782	Re: Distance between axle perches? You may have already set up your rear end, but here is an old thread where I took some measurements. http://67-72chevytrucks.com/vboard/s...d.php?t=217421 __________________ Steven "If dogs don't go to heaven, when I die I want to go wherever they went." -- Will Rogers R.I.P. Oscar R.I.P. Ratchet 1967 Pontiac GTO - Dad was the Original Owner 1970 Chevy 2wd SWB "Oscar's Truck" 1970 Chevy 2wd Blazer "Ratchet's Blazer" 2013 Chevy 2500HD Crew Cab Duramax/Allison Z71 LTZ "Brown Sugar" 2017 Chevy Suburban "BDB" 2020 Chevy Blazer Premier "Foxy" Member of Louisiana Classic Truck Club (LCTC) Shop Build

01-24-2017, 10:12 PM	#5
Trackman101 Registered User Join Date: Jul 2015 Location: Alberta Posts: 161	Re: Distance between axle perches? Thanks for the link. I haven't welded them on yet so I can still tweak them. Trying to figure out where to set my pinion angle then I weld them up.



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