The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

tdangle · 08-21-2023, 09:42 PM

If you have a 2 piece driveshaft, basically if the front driveline is 3 down make the pinion 3 up. so that they are parallel. Problem is that the pinion moves up on acceleration so some say to make the rear 1-2 up at most. as far as the engine/trans goes, the front driveshaft should be within 1 1.5 degrees the same slope as the engine trans combo. Are you having vibration issues?

08-21-2023, 09:42 PM	#5
tdangle Registered User Join Date: Mar 2005 Location: Jurupa Valley, Ca Posts: 1,211	Re: 72 c20 pinion angle If you have a 2 piece driveshaft, basically if the front driveline is 3 down make the pinion 3 up. so that they are parallel. Problem is that the pinion moves up on acceleration so some say to make the rear 1-2 up at most. as far as the engine/trans goes, the front driveshaft should be within 1 1.5 degrees the same slope as the engine trans combo. Are you having vibration issues? __________________ Terry 1970 Custom Camper/C20 , GM Crate 350/7004R, Dana 60, factory AC