What should the pinion angle be? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bagged69c10 · 01-01-2006, 12:17 PM

Im gonna be installing my four link in a couple of hours and just thought I would double check what the pinion angle should be before I put it on? Ive heard that it should be 4-5 degrees down and read in another thread that if you within 2-3degrees that it would be fine. Is all this true?

larry may · 01-01-2006, 12:55 PM

Last one I set up was in a drag race car. We went 7 degrees below center . Seemed to hook up best there. Also is 9 inch ford differential. Good Luck. Larry

Bowtie67 · 01-01-2006, 01:20 PM

4 to 5 degrees is what is recomended on the street, what 4 link did you get? Also make sure your lower arms are even and parellel to the ground with the vehicle setting at the diesired ride you are looking for.

bagged69c10 · 01-01-2006, 01:39 PM

The suicide doors super lift triangulated 4 link 36 in lower bar and 38 in upper adjustable bars

dwcsr · 01-01-2006, 02:03 PM

This is a good article on pinion angle.
http://carcraft.com/howto/91758/

4 links should not be more than 3* or no less than 1*. ladder bars and springs are different. If you go to small or to large on the degree you'll have a vibration while driving, racing is different. The Triangulated 4 bar is a pain to correct afterward, you have to cut and rethread the bars so git it right the first time and tac everything before you do a full bead.
Tac the axle housing to the jack stands so it doesn't move.

This is mine on a 58 3100 but its the same idea
Mine is a pinion centered rear and yours most likely is not so thats the reason some thing look so close on the right side of the rear housing.
http://www.ridetech.com/projectview....2785&SUBSYS=CC

01-01-2006, 12:17 PM	#1
bagged69c10 soon to be bagged64sub Join Date: Feb 2005 Location: DFW-currently phoenix Posts: 635	What should the pinion angle be? Im gonna be installing my four link in a couple of hours and just thought I would double check what the pinion angle should be before I put it on? Ive heard that it should be 4-5 degrees down and read in another thread that if you within 2-3degrees that it would be fine. Is all this true? __________________ 1969 c-10, bagged, Zd, 20" Boyds SOLD! 1964 Suburban COMING SOON Build threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=304726 1965 c-10 long bed 1993 Sierra x-cab 1999 tahoe-4/5 on 22s 2005 Chevy work truck

01-01-2006, 12:55 PM	#2
larry may Senior Member Join Date: Jul 2005 Location: MISSOURI Posts: 3,256	Re: What should the pinion angle be? Last one I set up was in a drag race car. We went 7 degrees below center . Seemed to hook up best there. Also is 9 inch ford differential. Good Luck. Larry

01-01-2006, 01:20 PM	#3
Bowtie67 Registered User Join Date: Jan 2004 Location: NH Posts: 2,266	Re: What should the pinion angle be? 4 to 5 degrees is what is recomended on the street, what 4 link did you get? Also make sure your lower arms are even and parellel to the ground with the vehicle setting at the diesired ride you are looking for. __________________ 1967 C10 - SWBSS Pro Street 427sbc, 700R4 & 4.10 Gears 1948 Chevy FleetMaster Coupe, LS1, (almost done) 1950 Chevy StyleLine Coupe 250/6 3x2 Dueces 2009 Toyota Tundra 1996 Harley RoadKing "I maybe getting old, but I can still burn rubber with the best of them"

01-01-2006, 01:39 PM	#4
bagged69c10 soon to be bagged64sub Join Date: Feb 2005 Location: DFW-currently phoenix Posts: 635	Re: What should the pinion angle be? The suicide doors super lift triangulated 4 link 36 in lower bar and 38 in upper adjustable bars __________________ 1969 c-10, bagged, Zd, 20" Boyds SOLD! 1964 Suburban COMING SOON Build threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=304726 1965 c-10 long bed 1993 Sierra x-cab 1999 tahoe-4/5 on 22s 2005 Chevy work truck

01-01-2006, 02:03 PM	#5
dwcsr Hollister Road Co. Join Date: Apr 2005 Location: Houston Posts: 6,131	Re: What should the pinion angle be? This is a good article on pinion angle. http://carcraft.com/howto/91758/ 4 links should not be more than 3* or no less than 1*. ladder bars and springs are different. If you go to small or to large on the degree you'll have a vibration while driving, racing is different. The Triangulated 4 bar is a pain to correct afterward, you have to cut and rethread the bars so git it right the first time and tac everything before you do a full bead. Tac the axle housing to the jack stands so it doesn't move. This is mine on a 58 3100 but its the same idea Mine is a pinion centered rear and yours most likely is not so thats the reason some thing look so close on the right side of the rear housing. http://www.ridetech.com/projectview....2785&SUBSYS=CC

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