2.5in drop spindles clearance problems? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

camshaftgsxr · 08-22-2011, 11:41 PM

http://grunionfabrication.com/drop-s...rs-p-2169.html

It says may have clearance problems with 15 inch wheels, can anyone elaborate? I wanna buy them before the sale is over
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*454stepside* · 08-23-2011, 12:00 AM

my guess would be it would make the rim hit the lower a arm since it will raise the center of the wheel up and the center of the suspension down

gchemist · 08-23-2011, 12:08 AM

I run 2.5 spindals with stock A-arms. No problems. I ven have 2" lowering springs.
The warning is based on how much back spacing you have on a wheel. If you have it at least 4", like on a 15X8 wheel, your are fine.

camshaftgsxr · 08-23-2011, 12:18 AM

What about less than 4? I have eagle alloys 15x8 (the ones that look like American racing outlaws) but I don't know the backspacing and I can't seem to find the wheels anywhere
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*cr34t3d_by_d4rkd3n* · 08-23-2011, 03:08 AM

brake caliper mount contacts inner rin weight contact area

VegasBruce · 08-23-2011, 06:25 AM

I have stock wheels and no clearance problems.

73gmc454 · 08-23-2011, 07:05 AM

my 15x8 rallys would not clear the botton ball joint , 15x7 fit fine

J Knight · 08-23-2011, 08:02 AM

I just installed 2.5 McGaugtys spindles and I have 15x6.5 rallys with 4.25 bs and on tight turns my rim rubbs on the lower control arms also the tie rod arm is so close to the rim it nocked the balance weights off. I would say you would be fine with 4in of bs or less.
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Southcity · 08-23-2011, 11:50 AM

Quote:

Originally Posted by J Knight

I just installed 2.5 McGaugtys spindles and I have 15x6.5 rallys with 4.25 bs and on tight turns my rim rubbs on the lower control arms also the tie rod arm is so close to the rim it nocked the balance weights off. I would say you would be fine with 4in of bs or less.
Posted via Mobile Device

To elaborate on the above, I run the same setup, some will have the balance weights placed on the outside of the stock 15x6.5 rim which will eliminate the weights hitting the tie rod arm, I used the flat sticky weights which affix to the inside of the rim which works well. Their is a lip (water removal or gutter) on the bottom control arm that some will grind slightly to allow for better clearance and this works well too.

baclay9 · 08-23-2011, 08:18 AM

I have 2.5" Western Chassis spindles on mine and I have no rubbing issues on my calipers with 15x8 rallies. I havent checked the lower control arm when turning though.

**lolife99** · 08-23-2011, 08:26 AM

Quote:

Originally Posted by baclay9

I have 2.5" Western Chassis spindles on mine and I have no rubbing issues on my calipers with 15x8 rallies. I havent checked the lower control arm when turning though.

Check for clearance issues at ride height.

Tony@AirRideTech · 08-23-2011, 08:28 AM

The is a general disclaimer when running smaller wheels... not all wheels are created equal. Some have larger drop centers on the hoop with smaller centers. No way to know if it is gonna go until you slap em on and see what you run into or find someone else that has done the same exact combo.

camshaftgsxr · 08-23-2011, 08:42 AM

how do i find the backspacing on my wheels? measure from the mounting surface to the inside lip?

J Knight · 08-23-2011, 11:04 AM

Measure from the mounting surface to the outermost lip.
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camshaftgsxr · 08-23-2011, 12:04 PM

Quote:

Originally Posted by J Knight

Measure from the mounting surface to the outermost lip.
Posted via Mobile Device

outermost? as in the outside lip or the inside lip

Southcity · 08-23-2011, 12:08 PM

Inside lip

**lolife99** · 08-23-2011, 01:11 PM

Quote:

Originally Posted by J Knight

Measure from the mounting surface to the outermost lip.
Posted via Mobile Device

This is incorrect.^^^

Wheel mounting surface-to-inside lip.

J Knight · 08-23-2011, 06:26 PM

Quote:

Originally Posted by lolife99

This is incorrect.^^^

Wheel mounting surface-to-inside lip.

How is what I posted incorrect? The illustsration is exactly what I said!

Wheel mounting surface to the outermost edge of the the backside of the wheel.
After all we are talking about the back half of the wheel.

**lolife99** · 08-23-2011, 08:38 PM

Quote:

Originally Posted by J Knight

How is what I posted incorrect? The illustsration is exactly what I said!

Wheel mounting surface to the outermost edge of the the backside of the wheel.
After all we are talking about the back half of the wheel.

You said:
"Measure from the mounting surface to the outermost lip".

I took that as the "outside of the wheel".
Not the inside edge. (backside)
So many, have this backwards,... on this board.
I apologize if I misunderstood you.

camshaftgsxr · 08-23-2011, 12:20 PM

ok and is it more than 4 or less than 4 BS that im looking for? im thinking over 4 inches would be desireable

edit: now im thinking less than 4.. gimme some help please

Southcity · 08-23-2011, 12:41 PM

4 inches or less

camshaftgsxr · 08-23-2011, 01:07 PM

ok thank you

TIM86 · 08-25-2011, 02:42 PM

My mc gaughys 2.5" drop spindles made the balancing weight rub. Just had to get the tire re-balanced with some stick wieghts and I was good to go.

*cr34t3d_by_d4rkd3n* · 08-24-2011, 06:04 AM

Quote:

Originally Posted by careboy

The is a general disclaimer when running smaller wheels.

indeen. this question does come up alot.

08-22-2011, 11:41 PM	#1
camshaftgsxr Registered User Join Date: Feb 2010 Location: Asheville, N.C. Posts: 785	2.5in drop spindles clearance problems? http://grunionfabrication.com/drop-s...rs-p-2169.html It says may have clearance problems with 15 inch wheels, can anyone elaborate? I wanna buy them before the sale is over Posted via Mobile Device __________________

08-23-2011, 12:00 AM	#2
454stepside Account Suspended Join Date: Dec 2010 Location: Falcon Colorado Posts: 1,029	Re: 2.5in drop spindles clearance problems? my guess would be it would make the rim hit the lower a arm since it will raise the center of the wheel up and the center of the suspension down

08-23-2011, 12:08 AM	#3
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: 2.5in drop spindles clearance problems? I run 2.5 spindals with stock A-arms. No problems. I ven have 2" lowering springs. The warning is based on how much back spacing you have on a wheel. If you have it at least 4", like on a 15X8 wheel, your are fine. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

08-23-2011, 12:18 AM	#4
camshaftgsxr Registered User Join Date: Feb 2010 Location: Asheville, N.C. Posts: 785	Re: 2.5in drop spindles clearance problems? What about less than 4? I have eagle alloys 15x8 (the ones that look like American racing outlaws) but I don't know the backspacing and I can't seem to find the wheels anywhere Posted via Mobile Device __________________

08-23-2011, 03:08 AM	#5
cr34t3d_by_d4rkd3n Account Suspended Join Date: Jan 2011 Location: Allen, TX Posts: 188	Re: 2.5in drop spindles clearance problems? brake caliper mount contacts inner rin weight contact area Attached Images

08-23-2011, 06:25 AM	#6
VegasBruce Registered User Join Date: Apr 2011 Location: Just outside Sin City Posts: 239	Re: 2.5in drop spindles clearance problems? I have stock wheels and no clearance problems. __________________ Bruce 73 Stepside, 74 Blazer, 75 1 Ton, 66 Barracuda and a 05 Electraglide DD http://i56.photobucket.com/albums/g1...Rusti192-1.jpg

08-23-2011, 07:05 AM	#7
73gmc454 Registered User Join Date: Dec 2010 Location: louisville ohio Posts: 375	Re: 2.5in drop spindles clearance problems? my 15x8 rallys would not clear the botton ball joint , 15x7 fit fine __________________ my build 77 gmc shortbed big block, http://67-72chevytrucks.com/vboard/s...d.php?t=438237

08-23-2011, 08:02 AM	#8
J Knight Registered User Join Date: Jun 2011 Location: Baytown TX Posts: 2,219	Re: 2.5in drop spindles clearance problems? I just installed 2.5 McGaugtys spindles and I have 15x6.5 rallys with 4.25 bs and on tight turns my rim rubbs on the lower control arms also the tie rod arm is so close to the rim it nocked the balance weights off. I would say you would be fine with 4in of bs or less. Posted via Mobile Device __________________ John 82 Chevy Silverado 350ci/TH350

08-23-2011, 08:18 AM	#10
baclay9 Registered User Join Date: Apr 2010 Location: Newcastle, OK Posts: 1,344	Re: 2.5in drop spindles clearance problems? I have 2.5" Western Chassis spindles on mine and I have no rubbing issues on my calipers with 15x8 rallies. I havent checked the lower control arm when turning though.

08-23-2011, 08:28 AM	#12
Tony@AirRideTech Junior Member Join Date: Feb 2005 Location: Huntingburg IN Posts: 620	Re: 2.5in drop spindles clearance problems? The is a general disclaimer when running smaller wheels... not all wheels are created equal. Some have larger drop centers on the hoop with smaller centers. No way to know if it is gonna go until you slap em on and see what you run into or find someone else that has done the same exact combo.

08-23-2011, 08:42 AM	#13
camshaftgsxr Registered User Join Date: Feb 2010 Location: Asheville, N.C. Posts: 785	Re: 2.5in drop spindles clearance problems? how do i find the backspacing on my wheels? measure from the mounting surface to the inside lip? __________________

08-23-2011, 11:04 AM	#14
J Knight Registered User Join Date: Jun 2011 Location: Baytown TX Posts: 2,219	Re: 2.5in drop spindles clearance problems? Measure from the mounting surface to the outermost lip. Posted via Mobile Device __________________ John 82 Chevy Silverado 350ci/TH350

08-23-2011, 12:08 PM	#16
Southcity Registered User Join Date: Aug 2007 Location: Redwood City, CA Posts: 1,177	Re: 2.5in drop spindles clearance problems? Inside lip __________________ 66 GMC Suburban Custom 66 Chevy K10 Suburban

08-23-2011, 12:20 PM	#20
camshaftgsxr Registered User Join Date: Feb 2010 Location: Asheville, N.C. Posts: 785	Re: 2.5in drop spindles clearance problems? ok and is it more than 4 or less than 4 BS that im looking for? im thinking over 4 inches would be desireable edit: now im thinking less than 4.. gimme some help please __________________ Last edited by camshaftgsxr; 08-23-2011 at 12:35 PM.

08-23-2011, 12:41 PM	#21
Southcity Registered User Join Date: Aug 2007 Location: Redwood City, CA Posts: 1,177	Re: 2.5in drop spindles clearance problems? 4 inches or less __________________ 66 GMC Suburban Custom 66 Chevy K10 Suburban



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08-23-2011, 01:07 PM	#22
camshaftgsxr Registered User Join Date: Feb 2010 Location: Asheville, N.C. Posts: 785	Re: 2.5in drop spindles clearance problems? ok thank you __________________

08-25-2011, 02:42 PM	#23
TIM86 Registered User Join Date: May 2011 Location: St.Petersburg,FL Posts: 158	Re: 2.5in drop spindles clearance problems? My mc gaughys 2.5" drop spindles made the balancing weight rub. Just had to get the tire re-balanced with some stick wieghts and I was good to go.

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