Cpp modular drop spindles and wheel backspacing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67ctener · 12-02-2012, 12:37 AM

Hey guys I've got a 67 with cpp modulAr spindles. I'm wanting to get wheels but don't wanna assemble the truck to measure. Anyone Running this set up with a 20x8.5 in the front and could tell me an offset? Any help is appreciated
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**lolife99** · 12-02-2012, 12:41 AM

I can tell you backspacing.
20x8.5 with 5.25"-5.5" backspace would be my choice.

67ctener · 12-02-2012, 12:51 AM

Quote:

Originally Posted by lolife99

I can tell you backspacing.
20x8.5 with 5.25"-5.5" backspace would be my choice.

I see most everyone is running 5 1/4 but with the modulars and narrowing the track width would I be at 4.5? I think they say it will bring my wheel in 3/4"
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gringoloco · 12-02-2012, 12:46 AM

With modulars? Aren't they 3/4" narrower? That would put you at 4.75-5" BS, no?
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67ctener · 12-02-2012, 12:49 AM

Quote:

Originally Posted by gringoloco

With modulars? Aren't they 3/4" narrower? That would put you at 4.75-5" BS, no?
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This is what I was thinking. I see majority of people are running 5 1/4 with non modulars, hoping there is someone here with my exact set up. Thanks for the help
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**lolife99** · 12-02-2012, 12:53 AM

Quote:

Originally Posted by gringoloco

With modulars? Aren't they 3/4" narrower? That would put you at 4.75-5" BS, no?
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I have never seen anyone post actual numbers for the CPP Modular spindles.
I've seen the chart that CPP put out,... but it has some issues.
If they are 1/2" narrower than a standard drop spindle,... I would be surprised.

Non modular spindles,... I would run a 20x8.5 with 5.75" BS just like n2billet's Lucy had.

shawno72 · 12-02-2012, 12:51 AM

Curious as well
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67ctener · 12-02-2012, 12:55 AM

Man Thats a beautiful truck
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**lolife99** · 12-02-2012, 12:59 AM

I run 5-1/4 BS on my 20x8 wheels on the blazer.

67ctener · 12-02-2012, 01:01 AM

Is that with the cpp spindles?
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**lolife99** · 12-02-2012, 01:10 AM

Quote:

Originally Posted by 67ctener

Is that with the cpp spindles?
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No,... ECE.

67ctener · 12-02-2012, 01:02 AM

Great lookin blazer
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derrickmanx1 · 12-02-2012, 04:34 AM

I got the 2.5's from CPP. I'm hoping to be able to run 18x9.5 w 5-5.5 bs on all four corners.

67ctener · 12-02-2012, 12:05 PM

Let me know if it works out
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C10_ustacould · 12-02-2012, 04:33 PM

I am interested in this too as I have the 73-87 control arms and drop spindles. My existing setup has the wheel/tire too far outward and it rubs a lot. I want to center them more in the inner fender.

67ctener · 12-02-2012, 04:36 PM

Quote:

Originally Posted by BucksSS

I am interested in this too as I have the 73-87 control arms and drop spindles. My existing setup has the wheel/tire too far outward and it rubs a lot. I want to center them more in the inner fender.

Someones out there had gotta have a straight answer for us haha
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**lolife99** · 12-02-2012, 05:09 PM

Here's the thread with the CPP offset chart.
http://67-72chevytrucks.com/vboard/s...d.php?t=529285
It says,...

Standard CPP Drop Spindles:
* 1/16" wider than DRUM BRAKES.
* 7/16" narrower than factory DISC BRAKES.

CPP Modular Drop Spindles:
* 1/4" narrower than DRUM BRAKES.
* 3/4" narrower than factory DISC BRAKES.

Also states at the bottom of the 73-87 chart that Western Chassis drop spindles are:
* 7/8" wider than DRUM BRAKES.
* 3/8" wider than factory DISC BRAKES.

Never on the chart does it say "per side" or "total track width narrower/wider".

If I had a set of the Modular Spindles,... I would measure them against a set of Belltech spindles I have and would put an end to all of this.

**lolife99** · 12-02-2012, 05:15 PM

I have a hard time believing CPP's standard drop spindles are only 1/16" wider than the drum brake set-up.
The design of the spindle will have to widen the track width.
Plus CPP takes into no account the fact that drop springs or cut springs will also widen the track width, as the lower control arm "flattens out" due to the shorter spring.

**lolife99** · 12-02-2012, 05:30 PM

Here's another thread that adds to the confusion,... with a member saying that CPPJEFF said,... it move the wheels in 3/4" per side,... (again COMPARED TO WHAT?)
1) Drum brakes?
2) Stock OEM Disc Brakes?
3) Other Drop spindles?
http://67-72chevytrucks.com/vboard/s...d.php?t=401544

But yet,... in the same thread,... there is a quote from CPP's website:

Modular™ Drop Spindle Wheel Kits

Looking for a spindle and brake kit for your lowered truck with big tires and wheels?
We have it!
Introducing CPP's new modular 2" drop spindle and drop spindle wheel kits for 1960-87 Chevy pickups.
Our exclusive new design helps solves tire to fender interference commonly found with lowered trucks.
Our new modular spindle and bracket works with factory 1971-87 C10 brake components, or for a HIGH performance option, combine our spindle with the NEW CPP 13" Rotor Twin 52mm Piston Brake Kit.
The ALL NEW CPP Modular Spindle offers many benefits available for the first time, installs easy without modifications, works with factory ball joints and tie rod ends, lowers your truck a full 2", offers adjustable steering stops, provides 1-1/8" more fender to tire clearance, allows use with standard factory brakes and PERFORMANCE aftermarket "BIG" Brake Kits.
You can count on CPP for impressive quality, performance and price.
Drop spindles also sold separately.

Ok,... so my math skills say that 1-1/8" is only 9/16" per side.
So what is it?
And compared to what?

All I can say is these CPP Modular spindles are the narrowest drop spindles out there for the 60-87 trucks.
But they are only an advertised 2" drop.

So back to what I always say.
Install them and then,... measure your own truck for wheels.
There's no other "sure fire way",... than that.

67ctener · 12-02-2012, 05:43 PM

Thanks for all the help/effort keith
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67ctener · 12-02-2012, 05:44 PM

Geary has about the same setup on his butternut yellow 69 but he is running western spindles idk where cpp/western are compared on width
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dkauffman05 · 10-13-2014, 07:34 PM

What ever came of this . I'm about to order wheels and was gonna run the modular spindles because I thought it was gonna narrow my track width 3/4 so I can get a deeper back spacing wheel. Also I'm wanting to run a 18x9.5 on the front if I can.

StupudMunkee · 01-20-2016, 04:00 PM

Realize this is an old thread, but I think the information may be useful as folks are searching the site.

Just spoke with Van @ CPP, he said that the statement "provides 1-1/8" more fender to tire clearance" is a comparison to other vendors' kits. Assume he meant drop spindle there but he could have been talking about the CPP Big Brake Kit with Modular Drop Spindles as a full setup. He also said that people have measured after install with as much as 3/8" change in either direction.

**lolife99** · 01-20-2016, 04:19 PM

So no definite answer from CPP,...

StupudMunkee · 01-20-2016, 04:21 PM

Nope. It sounded like they'd heard the question 1,000 times and were irritated that I'd called to ask about it for 1,001.

12-02-2012, 12:37 AM	#1
67ctener Registered User Join Date: Oct 2012 Location: Arlington Washington Posts: 1,808	Cpp modular drop spindles and wheel backspacing Hey guys I've got a 67 with cpp modulAr spindles. I'm wanting to get wheels but don't wanna assemble the truck to measure. Anyone Running this set up with a 20x8.5 in the front and could tell me an offset? Any help is appreciated Posted via Mobile Device Attached Images __________________ Scott 67 c10 sold 89 c1500 90 k2500 91 s10 #chevyonly

12-02-2012, 12:41 AM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,686	Re: Cpp modular drop spindles and wheel backspacing I can tell you backspacing. 20x8.5 with 5.25"-5.5" backspace would be my choice. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

12-02-2012, 12:46 AM	#4
gringoloco A guy with a truck Join Date: Sep 2005 Location: Germany, for now Posts: 5,920	Re: Cpp modular drop spindles and wheel backspacing With modulars? Aren't they 3/4" narrower? That would put you at 4.75-5" BS, no? Posted via Mobile Device __________________ -Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy

12-02-2012, 12:51 AM	#7
shawno72 C/10 junkie Join Date: Nov 2010 Location: Stockton Ca Posts: 9,093	Re: Cpp modular drop spindles and wheel backspacing Curious as well Posted via Mobile Device __________________ Shawn 70 LWB C10 current driver/project http://67-72chevytrucks.com/vboard/s...d.php?t=663051 68 SWB C10 Work in progress.....SOLD http://67-72chevytrucks.com/vboard/s...d.php?t=559520 72 LWB C10 Sold 71 LWB C10 Sold 68 LWB C10 CST Sold http://youtu.be/kbB0QrBIs9k My mom always had the best advice. It was just a tad late. After a fall that involved blood, she'd say....."Careful!"

12-02-2012, 12:55 AM	#8
67ctener Registered User Join Date: Oct 2012 Location: Arlington Washington Posts: 1,808	Re: Cpp modular drop spindles and wheel backspacing Man Thats a beautiful truck Posted via Mobile Device __________________ Scott 67 c10 sold 89 c1500 90 k2500 91 s10 #chevyonly

12-02-2012, 12:59 AM	#9
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,686	Re: Cpp modular drop spindles and wheel backspacing I run 5-1/4 BS on my 20x8 wheels on the blazer. Attached Images __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

12-02-2012, 01:01 AM	#10
67ctener Registered User Join Date: Oct 2012 Location: Arlington Washington Posts: 1,808	Re: Cpp modular drop spindles and wheel backspacing Is that with the cpp spindles? Posted via Mobile Device __________________ Scott 67 c10 sold 89 c1500 90 k2500 91 s10 #chevyonly

12-02-2012, 01:02 AM	#12
67ctener Registered User Join Date: Oct 2012 Location: Arlington Washington Posts: 1,808	Re: Cpp modular drop spindles and wheel backspacing Great lookin blazer Posted via Mobile Device __________________ Scott 67 c10 sold 89 c1500 90 k2500 91 s10 #chevyonly

12-02-2012, 04:34 AM	#13
derrickmanx1 Registered User Join Date: Nov 2012 Location: Rising Star, Tx Posts: 249	Re: Cpp modular drop spindles and wheel backspacing I got the 2.5's from CPP. I'm hoping to be able to run 18x9.5 w 5-5.5 bs on all four corners. __________________ NAME: TRAVIS TRUCK: BRUISER 71 C/10 SWB 3.5/5" drop 4.11 GEARS. F.A.S.T. BBC 408 496hp/479ft/lb JAKES 4L80E TCI TCU PTC 10.5" 2800 STALL My build thread: http://67-72chevytrucks.com/vboard/s...30#post5779530 Last edited by derrickmanx1; 12-02-2012 at 04:35 AM. Reason: added coment

12-02-2012, 12:05 PM	#14
67ctener Registered User Join Date: Oct 2012 Location: Arlington Washington Posts: 1,808	Re: Cpp modular drop spindles and wheel backspacing Let me know if it works out Posted via Mobile Device __________________ Scott 67 c10 sold 89 c1500 90 k2500 91 s10 #chevyonly

12-02-2012, 04:33 PM	#15
C10_ustacould A day late and $1 short... Join Date: Dec 2008 Location: Northwest FL Posts: 3,870	Re: Cpp modular drop spindles and wheel backspacing I am interested in this too as I have the 73-87 control arms and drop spindles. My existing setup has the wheel/tire too far outward and it rubs a lot. I want to center them more in the inner fender. __________________ Buck Instagram: C10_ustacould 1963 SWB Fleet Side 528 Desert Beige Milly 1967 SWB Step Side 506 Medium Blue The Old Girl 1968 SWB Fleet Side 503 Light Green Ellie SOLD 1965 SWB Fleet Side 507 Light Blue Prescription Strength SOLD 1971 SWB Fleet Side 521 White Shiro SOLD 1968 SWB Step Side 503 Light Green My Old Farm Truck SOLD

12-02-2012, 05:09 PM	#17
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,686	Re: Cpp modular drop spindles and wheel backspacing Here's the thread with the CPP offset chart. http://67-72chevytrucks.com/vboard/s...d.php?t=529285 It says,... Standard CPP Drop Spindles: * 1/16" wider than DRUM BRAKES. * 7/16" narrower than factory DISC BRAKES. CPP Modular Drop Spindles: * 1/4" narrower than DRUM BRAKES. * 3/4" narrower than factory DISC BRAKES. Also states at the bottom of the 73-87 chart that Western Chassis drop spindles are: * 7/8" wider than DRUM BRAKES. * 3/8" wider than factory DISC BRAKES. Never on the chart does it say "per side" or "total track width narrower/wider". If I had a set of the Modular Spindles,... I would measure them against a set of Belltech spindles I have and would put an end to all of this. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 12-02-2012 at 05:49 PM.

12-02-2012, 05:15 PM	#18
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,686	Re: Cpp modular drop spindles and wheel backspacing I have a hard time believing CPP's standard drop spindles are only 1/16" wider than the drum brake set-up. The design of the spindle will have to widen the track width. Plus CPP takes into no account the fact that drop springs or cut springs will also widen the track width, as the lower control arm "flattens out" due to the shorter spring. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

12-02-2012, 05:30 PM	#19
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,686	Re: Cpp modular drop spindles and wheel backspacing Here's another thread that adds to the confusion,... with a member saying that CPPJEFF said,... it move the wheels in 3/4" per side,... (again COMPARED TO WHAT?) 1) Drum brakes? 2) Stock OEM Disc Brakes? 3) Other Drop spindles? http://67-72chevytrucks.com/vboard/s...d.php?t=401544 But yet,... in the same thread,... there is a quote from CPP's website: Modular™ Drop Spindle Wheel Kits Looking for a spindle and brake kit for your lowered truck with big tires and wheels? We have it! Introducing CPP's new modular 2" drop spindle and drop spindle wheel kits for 1960-87 Chevy pickups. Our exclusive new design helps solves tire to fender interference commonly found with lowered trucks. Our new modular spindle and bracket works with factory 1971-87 C10 brake components, or for a HIGH performance option, combine our spindle with the NEW CPP 13" Rotor Twin 52mm Piston Brake Kit. The ALL NEW CPP Modular Spindle offers many benefits available for the first time, installs easy without modifications, works with factory ball joints and tie rod ends, lowers your truck a full 2", offers adjustable steering stops, provides 1-1/8" more fender to tire clearance, allows use with standard factory brakes and PERFORMANCE aftermarket "BIG" Brake Kits. You can count on CPP for impressive quality, performance and price. Drop spindles also sold separately. Ok,... so my math skills say that 1-1/8" is only 9/16" per side. So what is it? And compared to what? All I can say is these CPP Modular spindles are the *narrowest* drop spindles out there for the 60-87 trucks. But they are only an advertised 2" drop. So back to what I always say. Install them and then,... measure your own truck for wheels. There's no other "sure fire way",... than that. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

12-02-2012, 05:43 PM	#20
67ctener Registered User Join Date: Oct 2012 Location: Arlington Washington Posts: 1,808	Re: Cpp modular drop spindles and wheel backspacing Thanks for all the help/effort keith Posted via Mobile Device __________________ Scott 67 c10 sold 89 c1500 90 k2500 91 s10 #chevyonly



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12-02-2012, 05:44 PM	#21
67ctener Registered User Join Date: Oct 2012 Location: Arlington Washington Posts: 1,808	Re: Cpp modular drop spindles and wheel backspacing Geary has about the same setup on his butternut yellow 69 but he is running western spindles idk where cpp/western are compared on width Posted via Mobile Device __________________ Scott 67 c10 sold 89 c1500 90 k2500 91 s10 #chevyonly

10-13-2014, 07:34 PM	#22
dkauffman05 Registered User Join Date: Jan 2008 Location: Cumming, Georgia Posts: 416	Re: Cpp modular drop spindles and wheel backspacing What ever came of this . I'm about to order wheels and was gonna run the modular spindles because I thought it was gonna narrow my track width 3/4 so I can get a deeper back spacing wheel. Also I'm wanting to run a 18x9.5 on the front if I can.

01-20-2016, 04:00 PM	#23
StupudMunkee Registered User Join Date: May 2014 Location: Metairie, LA Posts: 24	Re: Cpp modular drop spindles and wheel backspacing Realize this is an old thread, but I think the information may be useful as folks are searching the site. Just spoke with Van @ CPP, he said that the statement "provides 1-1/8" more fender to tire clearance" is a comparison to other vendors' kits. Assume he meant drop spindle there but he could have been talking about the CPP Big Brake Kit with Modular Drop Spindles as a full setup. He also said that people have measured after install with as much as 3/8" change in either direction.

01-20-2016, 04:19 PM	#24
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,686	Re: Cpp modular drop spindles and wheel backspacing So no definite answer from CPP,... __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

01-20-2016, 04:21 PM	#25
StupudMunkee Registered User Join Date: May 2014 Location: Metairie, LA Posts: 24	Re: Cpp modular drop spindles and wheel backspacing Nope. It sounded like they'd heard the question 1,000 times and were irritated that I'd called to ask about it for 1,001.

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