The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Flip the Trailing Arm Mounts on Crossmember

69gmcc10 · 03-01-2013, 01:54 PM

I converted from leafs to trailing arms and when I did I flipped my mounts to change the anti squat and increase traction. It made a huge difference in putting the power to the ground (engine kinda bogs now) and the science says the lower you go the more important it is to flip the mounts for traction, but if you are just gonna cruse in it the benefit is the pinion angle. Going that low you might need some shim regardless, I think the math is a 4" spring and the mount flip will counter most pinion angle change, but I dont know how dramatic a 6" spring and blocks will effect the situation.

My vote is do it, from my limited experience I dont think it can hurt and you are there anyway.

03-01-2013, 01:54 PM	#5
69gmcc10 Registered User Join Date: May 2011 Location: Missoula, MT Posts: 934	Re: Flip the Trailing Arm Mounts on Crossmember I converted from leafs to trailing arms and when I did I flipped my mounts to change the anti squat and increase traction. It made a huge difference in putting the power to the ground (engine kinda bogs now) and the science says the lower you go the more important it is to flip the mounts for traction, but if you are just gonna cruse in it the benefit is the pinion angle. Going that low you might need some shim regardless, I think the math is a 4" spring and the mount flip will counter most pinion angle change, but I dont know how dramatic a 6" spring and blocks will effect the situation. My vote is do it, from my limited experience I dont think it can hurt and you are there anyway. __________________ 69 GMC C10 build thread- http://67-72chevytrucks.com/vboard/s...d.php?t=501676 03 Silverado build thread-http://67-72chevytrucks.com/vboard/s...d.php?t=591582 Last edited by 69gmcc10; 03-01-2013 at 02:04 PM.