Lowering springs - Change pinion angle? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

newbe351 · 07-31-2012, 10:53 AM

I have drop spindles on the front of the '66 GMC and installed drop leaf springs from Early Classic over the weekend. The truck vibrated so bad, I took them off after a trip around the block. The original leafs have a wedge attached to the bottom of the spring that points the differential down. The new springs raised the diff angle up quite a bit and even looked bad just eyeballing it. If I get a wedge of the same angle as I have now on the new springs, will everything be OK? The springs just drop the body right? There should be no change in the geometry of the running gear? It's a longbed with the dual drive lines.

Thanks

07-31-2012, 10:53 AM	#1
newbe351 Registered User Join Date: Dec 2004 Location: West Sacramento, CA Posts: 368	Lowering springs - Change pinion angle? I have drop spindles on the front of the '66 GMC and installed drop leaf springs from Early Classic over the weekend. The truck vibrated so bad, I took them off after a trip around the block. The original leafs have a wedge attached to the bottom of the spring that points the differential down. The new springs raised the diff angle up quite a bit and even looked bad just eyeballing it. If I get a wedge of the same angle as I have now on the new springs, will everything be OK? The springs just drop the body right? There should be no change in the geometry of the running gear? It's a longbed with the dual drive lines. Thanks Last edited by newbe351; 07-31-2012 at 11:10 AM.



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