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06-03-2015, 06:52 AM
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#1 |
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user # 2756
 
Join Date: Jun 2001
Location: Chesapeake, Virginia
Posts: 4,612
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caster angle question
caster angle is set around 2-4 degrees positive, which means the "pivot line" has the lower balljoint/kingpin forward of the upper, is that correct? So when increasing positive caster using shims you would actually turn the pinion downward?
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm 
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06-03-2015, 07:30 AM
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#2 |
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Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: caster angle question
Yes. The pinion angle shouldn't matter with a double cardan joint in your shaft
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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06-03-2015, 12:28 PM
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#3 |
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Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,404
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Re: caster angle question
You shouldn't need any more than 3-4 degrees with a leaf spring front end, unless you are running huge tires
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06-10-2015, 12:05 AM
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#4 |
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Registered User
Join Date: Jan 2010
Location: Loveland, CO
Posts: 1,921
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Re: caster angle question
2-4 degrees caster is fine, and I'm pretty sure your pinion angle does matter with a double cardan joint. Pinion angle needs to match the driveshaft angle, or within 3-5 degrees. And pinion angle takes priority over caster angle.
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Zach 1970 Chevrolet Custom Camper K20 1971 GMC Super K2500, 12V/NV4500 swap in progress 1971 Chevrolet Custom C10 1972 Chevrolet Custom Deluxe C20, 5.3/4L60E 1972 Oldsmobile Cutlass Supreme, 455/TH400, 3.73 posi 2004 GMC Sierra 2500HD, LB7/Allison, CCSB 2005 GMC Sierra 1500, 5.3/4L60E, CCSB Last edited by BigRed76; 06-10-2015 at 12:14 AM. |
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06-11-2015, 10:35 PM
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#5 |
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Registered User
Join Date: Jun 2012
Location: cibolo tx
Posts: 1,033
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Re: caster angle question
Front driveshaft u joint angle is not more important than drivability. Get the right caster. I run 6 degrees.
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