@NLXTACY I upgraded some sagging stock suspension to 1" Tough dogs springs/shocks and saw my caster go from 3.5/3.0 degrees down to 1.0/0.5 degrees. I actually measured a 1.5" lift difference now or about 21.5" hub to fender. On the highway the loss of camber is pretty noticeable to the point where the wife has commented on it. My question is do you think the 1.7 degree to inch correction has any merit? I'm afraid the 2.5" correction plates will be too much and is it likely to push me past 4 degrees caster on only an appox. 1.5" lift. I'd love to hear your recommendation on this. Thanks!
Caster Correction for a 2.5" Lift
- Thread starter ZRotheohv
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- 2.5" caster caster correction lift
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I just tried to put a set of 6" Delta Radius Arms on my 2.5" OME lift. As soon as I drive away, I start getting an odd and very subtle grinding when I first press the accelerator and right when I remove my foot from the accelerator. I am wondering if the Castor correction meant for a 6" lift is putting my drive shaft at a weird angle to the pumpkin or something like that. Could be unrelated and that I need a new UJoint or something...but it started right after the Deltas. Any thoughts?
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Caster correction is not a cookie cutter thing even if the products to correct it are sold that way.
You need a caster reading before any correction, lifted to whatever, stock bushings, ect.
Once you have that you can go about correcting your caster.
A 2.5” lift you are probably at 0*. But who knows really, since the axle swings in an arch and lifting rotates it forward, just get an alignment before trying to correct any caster and see what it is. It is not some set in stone thing, it varies a lot.
So let’s assume you are at 0*. Ideal caster is 3.5-4.5*, more and it will have torque steer cornering. You also will have pinion angle issues. On that note, caster correction doesn’t fix pinion angle, these are two separate issues and things to address. Fixing one generally doesn’t fix the other.
In my opinion the factory 2.5ish will make it track ok but not great. For it to track great, one finger at 80mph, you need 3.5-4.5*.
You probably have to much caster, iirc the 6” arms correct something like 7 or 8* which is a lot for 2.5” lift.
Like I say once you know your number before caster correction you can reach out to the vendors and or shop products to get you in the 3.5-4.5* range. Anything less is not ideal.
Oh you can run a DC front drive line. If your front pinion is more than a degree or so different than your front tcase output flange you will likely need one.
Cheers
yes, drive line angles on the 80 front is awful from the factory. put your drive shaft in phase first 2.5-6 might be a little aggressive. i took mine from 2 -4'ish with my drive shaft inphase
Delta VS
Supporting Vendor
6” arms are providing far too much caster for a 2.5” lift, which is also changing your pinion angle far too much (can’t change one without the other unless doing a cut and turn). Can you send me an email (info @deltavs.con) so I can help you work through this? Not sure how you ended up with such a large set of arms for that lift.
Delta VS
Supporting Vendor
Thanks for the email, glad we got it sorted!
Very helpful Dave! Thank you. Right now, stock, I am sitting at -1 Caster. We put an angle finder on it. Doug was suggesting at least a 5/6* adjustment. Would you still recommend your 2"arm for this?
Ben
Delta VS
Supporting Vendor
The 2” arms will add ~4.5* of caster. I would recommend comparing your angle finder readings to an alignment sweep reading before making any decisions.
10-4. I'll see what the alignment finds. Thanks again.