Lowered front end alignment question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

doiton3 · 02-29-2012, 12:12 AM

1968 C10 SWB
3" drop springs in front
4" drop springs in back
Rest of suspension stock and tight.
Talked to a local (non-chain) alignment shop today and he seemed to know his stuff related to these older trucks, but he said he might need to put longer front upper A arm bolts in to get the caster around 3.5deg.

Anyone heard of installing a longer bolt?
For some reason it makes me nervous.

BMERDOC · 02-29-2012, 12:22 AM

I dont think I'd install the longer bolt to add more shims. Allow me to plug my Alignment thread (bottom of my post). Chevyrestoguy did a nice write up on what is argueably the best way to gain more caster. Robnolimit has some great info in his "Make it Handle" thread too.

http://67-72chevytrucks.com/vboard/s...d.php?t=501241

http://67-72chevytrucks.com/vboard/s...d.php?t=419251

KQQL IT · 02-29-2012, 02:07 AM

Longer bolts will work. 4" grade 8. 1/2"
Moving the control arms work also.
Posted via Mobile Device

doiton3 · 02-29-2012, 08:40 PM

Thanks BMERDOC, I has surfed for 2 days and found the Robnolimit thread but not yours, great info.

I am definitely leaning towards moving the lower arm forward 1/2 to 3/4 inch when the weather warms up.

02-29-2012, 12:12 AM	#1
doiton3 Registered User Join Date: Aug 2009 Location: Auburn, WA Posts: 10	Lowered front end alignment question 1968 C10 SWB 3" drop springs in front 4" drop springs in back Rest of suspension stock and tight. Talked to a local (non-chain) alignment shop today and he seemed to know his stuff related to these older trucks, but he said he might need to put longer front upper A arm bolts in to get the caster around 3.5deg. Anyone heard of installing a longer bolt? For some reason it makes me nervous.

02-29-2012, 12:22 AM	#2
BMERDOC Registered User Join Date: Jun 2011 Location: Richmond,Va Posts: 2,934	Re: Lowered front end alignment question I dont think I'd install the longer bolt to add more shims. Allow me to plug my Alignment thread (bottom of my post). Chevyrestoguy did a nice write up on what is argueably the best way to gain more caster. Robnolimit has some great info in his "Make it Handle" thread too. http://67-72chevytrucks.com/vboard/s...d.php?t=501241 http://67-72chevytrucks.com/vboard/s...d.php?t=419251 __________________ Nick Carter 1967 C10 Short bed Fleetside Project Cheap Thrills! 2WD C10 Modern/Performance Alignments Easiest Alignment Ever!

02-29-2012, 02:07 AM	#3
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,257	Re: Lowered front end alignment question Longer bolts will work. 4" grade 8. 1/2" Moving the control arms work also. Posted via Mobile Device __________________ " That didnt make it any newer " " Dont antique the equipment "

02-29-2012, 08:40 PM	#4
doiton3 Registered User Join Date: Aug 2009 Location: Auburn, WA Posts: 10	Re: Lowered front end alignment question Thanks BMERDOC, I has surfed for 2 days and found the Robnolimit thread but not yours, great info. I am definitely leaning towards moving the lower arm forward 1/2 to 3/4 inch when the weather warms up.

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