The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - How do I determine if I need Pinion Shims

Arl37 · 01-17-2015, 01:23 AM

Thanks tcrist. I think that answered most of my questions. I found a digital angle gauge at Harbor freight and tool for $29.95.. Think I will get one and check out the angles tomorrow. Once I get the angles figured out it kinda begs the question of what are the factory specs and how do i take into consideration that the 4 inch drop springs will cause the axle to wrap more than a stock spring and therefore the pinion "needs" more angle?
Any idea where the factory specs can be found?

01-17-2015, 01:23 AM	#5
Arl37 Registered User Join Date: Jul 2011 Location: Valley Center, Ca Posts: 277	Re: How do I determine if I need Pinion Shims Thanks tcrist. I think that answered most of my questions. I found a digital angle gauge at Harbor freight and tool for $29.95.. Think I will get one and check out the angles tomorrow. Once I get the angles figured out it kinda begs the question of what are the factory specs and how do i take into consideration that the 4 inch drop springs will cause the axle to wrap more than a stock spring and therefore the pinion "needs" more angle? Any idea where the factory specs can be found?