Installing Coil Spring pinion shims - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Mathew21** · 03-12-2017, 01:34 PM

I have a slight drive line vibration between 45-48 mph in my lowered Coil spring truck. 2.5" drop spindles with 2" lowering springs up front. The rear has 4" lowering springs. ( No C notch). Anyway my pinion angle is pointing downward. I ordered some pinion shims. They look pretty straight forward to install but I figure I would ask before i do it to save me from doing any unnecessary work.

Thanks for any advice, Matt

In case anyone is need of shims this is where I ordered them from.

https://www.performanceonline.com/19...ar-Suspension/

**PGSigns** · 03-12-2017, 06:33 PM

Pull the U-bolt and slide it in tighten the u-bolt back up. My blocks have 2 degrees milled into them.
Jimmy

**Mathew21** · 03-12-2017, 07:57 PM

Quote:

Originally Posted by PGSigns

Pull the U-bolt and slide it in tighten the u-bolt back up. My blocks have 2 degrees milled into them.
Jimmy

Thanks Jimmy it sounds easy enough.

03-12-2017, 01:34 PM	#1
Mathew21 Senior Member Join Date: May 2010 Location: Clinton township, MI Posts: 1,190	Installing Coil Spring pinion shims I have a slight drive line vibration between 45-48 mph in my lowered Coil spring truck. 2.5" drop spindles with 2" lowering springs up front. The rear has 4" lowering springs. ( No C notch). Anyway my pinion angle is pointing downward. I ordered some pinion shims. They look pretty straight forward to install but I figure I would ask before i do it to save me from doing any unnecessary work. Thanks for any advice, Matt In case anyone is need of shims this is where I ordered them from. https://www.performanceonline.com/19...ar-Suspension/ __________________ It only has original paint once

03-12-2017, 06:33 PM	#2
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: Installing Coil Spring pinion shims Pull the U-bolt and slide it in tighten the u-bolt back up. My blocks have 2 degrees milled into them. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic



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