Wheel Geometry is Off - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Custom06 · 02-19-2018, 01:18 PM

We have an 86 Silverado lowered on McGaughys spindles and removed 1 coil off the original spring. All steering and suspension was replaced with new parts. After the drop we noticed that the driver side wheel and tire sit further out towards the fender than the passenger side which sits in closer to the frame. I have a buddy with an 84 with brand new CPP A-Arms and spindles doing the same thing. Spoke to another enthusiast having the same issue. Any ideas on what is going on???????

lowrollin70gmc · 02-19-2018, 02:15 PM

Has the truck been aligned yet? It’s possible that one side has different camber than the other, which will move the top of the tire in or out.

I would also measure tire to frame (after alignment) and frame to body on both sides to check if the body is shifted on the frame.

Custom06 · 02-19-2018, 02:29 PM

Alignment has been done already and still there is a noticeable difference in where the wheel sits in the fender. I would say there's about a 3/4-1" difference. I've got an 85 that we just bought and will be lowering soon. I checked for any issues before lowering this one and it all checks out even on both sides. So if there's any issues afterwards I'll know it's the parts and not the truck.

Dayton601 · 02-19-2018, 07:03 PM

Mine is the same way, I have CCP tubular, with a 2 inch drop spindle, on a 81

measured the drivers side it was about 1.1/4 and the passenger was around 1/2 shims on both sides are about the same , just had front end aligned, drives straight,

Custom06 · 02-20-2018, 11:19 AM

I’m thinking the McGaughy spindle is bad???????

Custom06 · 02-20-2018, 11:21 AM

I’m gonna buy Western Chasis drop spindles this week for my 85 GMC, we’ll see what that does.

Dayton601 · 02-20-2018, 02:10 PM

Wow seems like after checking the forums this question goes way back in other threads, mine was 4 wheel laser aligned, so feel good about alignment, now it makes me wonder is my body is not off a little, I have new aftermarket body and front core support bushings, might need to loosen and shake it up a little see if it changes anything,

bdiamond · 02-21-2018, 07:56 PM

There are 5/8" alignment dowel holes in the front cab mounts. Stick a couple long 5/8" bolts in them to see if the body/ frame alignment is good.

02-19-2018, 01:18 PM	#1
Custom06 Registered User Join Date: Feb 2015 Location: Haslet,TX Posts: 28	Wheel Geometry is Off We have an 86 Silverado lowered on McGaughys spindles and removed 1 coil off the original spring. All steering and suspension was replaced with new parts. After the drop we noticed that the driver side wheel and tire sit further out towards the fender than the passenger side which sits in closer to the frame. I have a buddy with an 84 with brand new CPP A-Arms and spindles doing the same thing. Spoke to another enthusiast having the same issue. Any ideas on what is going on???????

02-19-2018, 02:15 PM	#2
lowrollin70gmc Too many projects Join Date: Mar 2004 Location: Fargo, ND land of the flat hills Posts: 1,147	Re: Wheel Geometry is Off Has the truck been aligned yet? It’s possible that one side has different camber than the other, which will move the top of the tire in or out. I would also measure tire to frame (after alignment) and frame to body on both sides to check if the body is shifted on the frame. __________________ Andrew 84 GMC C1500 SWB 6.2 Diesel/700R4/3.42 "Grandpa's odd duck" 70 GMC C1500 LWB My first truck: shaved, bagged, and more: the lowrollin70gmc 68 K20 Suburban 12V Cummins/NV5600/NP205/D60/11.5AAM 3.73s "Dakota Cadillac" 63 Chevy II Nova Coupe 250 I6/T56/4.56s "Economy car" 53 Willys Wagon 350/NV4500/BW4401/HP D44/9inch “Winter Wagon” 30 Model A 16 Focus ST

02-19-2018, 02:29 PM	#3
Custom06 Registered User Join Date: Feb 2015 Location: Haslet,TX Posts: 28	Re: Wheel Geometry is Off Alignment has been done already and still there is a noticeable difference in where the wheel sits in the fender. I would say there's about a 3/4-1" difference. I've got an 85 that we just bought and will be lowering soon. I checked for any issues before lowering this one and it all checks out even on both sides. So if there's any issues afterwards I'll know it's the parts and not the truck. Last edited by Custom06; 02-19-2018 at 02:31 PM. Reason: additional info

02-19-2018, 07:03 PM	#4
Dayton601 Registered User Join Date: Nov 2016 Location: Dayton Texas Posts: 67	Re: Wheel Geometry is Off Mine is the same way, I have CCP tubular, with a 2 inch drop spindle, on a 81 measured the drivers side it was about 1.1/4 and the passenger was around 1/2 shims on both sides are about the same , just had front end aligned, drives straight, Attached Images Last edited by Dayton601; 02-19-2018 at 07:15 PM.

02-20-2018, 11:19 AM	#5
Custom06 Registered User Join Date: Feb 2015 Location: Haslet,TX Posts: 28	Re: Wheel Geometry is Off I’m thinking the McGaughy spindle is bad???????

02-20-2018, 11:21 AM	#6
Custom06 Registered User Join Date: Feb 2015 Location: Haslet,TX Posts: 28	Re: Wheel Geometry is Off I’m gonna buy Western Chasis drop spindles this week for my 85 GMC, we’ll see what that does.

02-20-2018, 02:10 PM	#7
Dayton601 Registered User Join Date: Nov 2016 Location: Dayton Texas Posts: 67	Re: Wheel Geometry is Off Wow seems like after checking the forums this question goes way back in other threads, mine was 4 wheel laser aligned, so feel good about alignment, now it makes me wonder is my body is not off a little, I have new aftermarket body and front core support bushings, might need to loosen and shake it up a little see if it changes anything,

02-21-2018, 07:56 PM	#8
bdiamond Registered User Join Date: Sep 2007 Location: Wichita Falls, Texas Posts: 459	Re: Wheel Geometry is Off There are 5/8" alignment dowel holes in the front cab mounts. Stick a couple long 5/8" bolts in them to see if the body/ frame alignment is good.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.