Differential pinion angle?
Thread Starter
Melting Slicks
Joined: May 2002
Posts: 2,508
Likes: 0
From: Wisconsin
Differential pinion angle?
What is the factory pinion angle for the differential? We are making a new lighter crossmember for the differential so we can mount the coilovers up higher. I'm just curious of what the factory set it at. We are probably going to do one degree down but ideally we'd like to do 0 degrees, straight at the tranny since it would result in basically no hp lost in the driveshaft (half shafts, however...).
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: Differential pinion angle? (Schmucker)
A zero pinion angle is not good for the universals. They need a slight angle for longevity. The angle comming out the tailstock dictates the pinion angle. The 2 angles must cancel each other. It the output shaft comming out the transmission is 1 degree down then you need a pinion angle of 1 degree up.
I went through this this winter and really worked at getting the 2 angles right on. With our short approximate 26 inch driveshafts this is critical.
I went through this this winter and really worked at getting the 2 angles right on. With our short approximate 26 inch driveshafts this is critical.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Re: Differential pinion angle? (Schmucker)
I've heard what Norval is saying. But when i first started to hotRod my 79 I installed the poly differential mount. I set the motor and 700R4 tranny/drive line perfectly straight to the rear end. That's when I first figured out that Vette motors are offset an inch to the passenger side. It actually made my fan blade to high and I ended up shimming the back of the tranny cross member mount to bring the front of the engine back down.
I use the Energy Suspension poly motor mounts from Summit racing they are about $35 each
I use the Energy Suspension poly motor mounts from Summit racing they are about $35 each
