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#1 | |
TNT-MOTORSPORTS
Join Date: Mar 2008
Location: TULSA OKLAHOMA
Posts: 2,692
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Re: CPP Drop Spindles: Conflicting Information
Quote:
I will tell you that when I sell back wheels I reccommend 20X10's with 5.50 backspace for a fleetside with the wide rear axle . And depending on the drop a 285/40/20 or 295/40/20 tire with something along the lines of a 255/40/20 on the front and a 20X8.5 with 5.25 backspace when using standard drop spindles |
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#2 |
Registered User
Join Date: May 2010
Location: Broken Arrow Okla.
Posts: 510
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Re: CPP Drop Spindles: Conflicting Information
They are 20x10 with 5.5inch BS.
__________________
1967 swb 454 cid 700R4 trans SOLD 2006 Chevy Trailblazer SS 2013 Camaro RS convertible the wife's Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=573248 |
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#3 |
Registered User
Join Date: Mar 2011
Location: Kansas City, Missouri
Posts: 3,541
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Re: CPP Drop Spindles: Conflicting Information
Thank you.
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Scott |
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#4 |
Registered User
Join Date: Mar 2011
Location: Kansas City, Missouri
Posts: 3,541
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Re: CPP Drop Spindles: Conflicting Information
Thank you for all the info.
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Scott |
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#5 |
Registered User
Join Date: Oct 2013
Location: Cheshire, CT
Posts: 39
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Re: CPP Drop Spindles: Conflicting Information
OK. So I bit the bullet and bought the setup I was describing. The part number I bought was 6370SWBK6OE. This is described as "1963-70 O.E.M., 6-lug, drop, kit ". The kit comes with 2.5" drop spindles in the new smooth casting (no stiffening ribs on the "front" of the spindle (rotor side)). I took measurements of the spindles (distance from center of LBJ hole to wheel mounting face) and here are the results.
_____________________ LBJ Hole to Wheel Mounting Face CPP CP4S2 Spindles ____ 5.302" '70 C10 Drum Spindles___ 4.703" ____________________________________________________ Difference_____________ 0.599" The CPP CP4S2 spindles move the wheels OUT relative to stock '70 C10 drum brake spindles by 0.6" EACH SIDE. The actual drop is very close to the advertised 2.5". Thus, the offset chart supplied by CPP (found here: http://www.classicperform.com/Instru...fset_Chart.pdf), which claims 1/16" wider than drums is incorrect. ![]() Last edited by mtnbikerxt; 07-07-2014 at 09:40 PM. |
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#6 | |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,717
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Re: CPP Drop Spindles: Conflicting Information
Quote:
I agree they do narrow the track width. By how much? Even CPP doesn't know for sure.
__________________
Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#7 | |
TNT-MOTORSPORTS
Join Date: Mar 2008
Location: TULSA OKLAHOMA
Posts: 2,692
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Re: CPP Drop Spindles: Conflicting Information
Quote:
The spindles pictured above aren't designed to narrow track width, I'm sure you know that though. Just making an observation . |
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#8 | |
Registered User
Join Date: Oct 2013
Location: Cheshire, CT
Posts: 39
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Re: CPP Drop Spindles: Conflicting Information
Quote:
Anyone interested in some drop spindles that have never seen any use? Just painted and mounted up! |
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#9 | |
But Found Her 25yrs Later!
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,530
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Re: CPP Drop Spindles: Conflicting Information
Quote:
they move the wheels out in relation to drums - even though I was told by a vendor here that they wouldn't move my wheels out. It's funny how this has been a topic of frustration in these forums for several years now. ![]()
__________________
I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 Last edited by LostMy65; 07-13-2014 at 06:07 PM. |
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#10 |
Registered User
Join Date: Oct 2012
Location: Arlington Washington
Posts: 1,808
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Re: CPP Drop Spindles: Conflicting Information
I think only the modulars claim to narrow track width. I know the modulars are only offered in 2" drop
__________________
Scott 67 c10 sold 89 c1500 90 k2500 91 s10 #chevyonly ![]() |
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#11 |
TNT-MOTORSPORTS
Join Date: Mar 2008
Location: TULSA OKLAHOMA
Posts: 2,692
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Re: CPP Drop Spindles: Conflicting Information
This is correct ...! Standard spindles widen the track over drum brakes. They widen them to basically stock 71-72 track width give or take a tiny bit. Modular narrow the track width from 71-72 about 1'' to 1-1/8'' per side.
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#12 | |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,717
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Re: CPP Drop Spindles: Conflicting Information
Quote:
Where did you get this info? I've been trying to confirm this since the modular spindles came out. 1"-1-1/8" per side is a lot!!!
__________________
Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#13 |
TNT-MOTORSPORTS
Join Date: Mar 2008
Location: TULSA OKLAHOMA
Posts: 2,692
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Re: CPP Drop Spindles: Conflicting Information
From actual measurements. Converted a truck from standard CPP drop spindles to modular spindles. Measurements taken before and after. CPP is also quoting that measurement on their website now.
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#14 |
Registered User
Join Date: May 2010
Location: Broken Arrow Okla.
Posts: 510
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Re: CPP Drop Spindles: Conflicting Information
X2. It'sy truck that Tommy is talking about.
__________________
1967 swb 454 cid 700R4 trans SOLD 2006 Chevy Trailblazer SS 2013 Camaro RS convertible the wife's Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=573248 |
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#15 |
But Found Her 25yrs Later!
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,530
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Re: CPP Drop Spindles: Conflicting Information
Anymore experiences of ones going from drums to modular spindles?
The standard cpp drop spindles moved my wheels out about 5/8" each side from where they were with drums. Now I'd like to hear a couple more experiences from those who went from drums to modular spindles. It's just to costly of a purchase to not know for sure before hand. Thanks
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I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#16 | |
TNT-MOTORSPORTS
Join Date: Mar 2008
Location: TULSA OKLAHOMA
Posts: 2,692
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Re: CPP Drop Spindles: Conflicting Information
Quote:
For the record I personally Know of NO dropped disc brake spindle that narrows the front track width other than the Modular CPP. As far as I know all manufacturers dropped disc brake spindle moves the wheels out to at least 1971 and newer track width...... ! Last edited by ksbrktracer; 10-01-2014 at 01:47 AM. |
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#17 |
But Found Her 25yrs Later!
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,530
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Re: CPP Drop Spindles: Conflicting Information
Thanks,
. I need to know the track width change from drum brakes to cpp modular. Has anyone went from drums to discs using cpp's modular spindles? Did the track width get wider, and by how much?
__________________
I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#18 |
TNT-MOTORSPORTS
Join Date: Mar 2008
Location: TULSA OKLAHOMA
Posts: 2,692
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Re: CPP Drop Spindles: Conflicting Information
I believe that the track width with Modulars is slightly narrower than a 1970 and older drum brake setup ... I believe the figure is about 1/4'' narrower than drum . I believe that 1971 and later were approximately 3/4'' per side wider track width than 1970 , back a 1971 up the 1-1/8 and that puts you at about 1/4''-to 5/16'' narrower give or take a fraction
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#19 |
But Found Her 25yrs Later!
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,530
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Re: CPP Drop Spindles: Conflicting Information
Yes, that's what they tell us.
I need to KNOW. Not Believe. I do appreciate your replies, but I need to hear from those who have actually went from drums to Modular. Unless a vendor wants to guarantee that my wheels will not move out going from drums to modular, I'm not going to spend $300+ . I was told by a vendor here that Cpp regular drop spindles would not move my wheels out going from drums. So I ordered a set. They actually moved my wheels out 5/8". I sent them back getting charged a restocking fee. Thanks again for your replies. I'm really wanting to hear some real life examples of one's who went straight from drums to modular.
__________________
I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#20 | |
Registered User
Join Date: May 2010
Location: Broken Arrow Okla.
Posts: 510
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Re: CPP Drop Spindles: Conflicting Information
Quote:
__________________
1967 swb 454 cid 700R4 trans SOLD 2006 Chevy Trailblazer SS 2013 Camaro RS convertible the wife's Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=573248 |
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#21 | |
But Found Her 25yrs Later!
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,530
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Re: CPP Drop Spindles: Conflicting Information
Quote:
I can understand the irritation or frustration with repeating the same information over and over. 'Here we go again' is only because we've had overwhelming misinformation. In no indefinite terms it's been stated many times by cpp and some vendors that the wheels will not move out with any cpp spindles. But the regular cpp spindles do move the wheels out 5/8". It's going to take a lot of positive experiences posted in these forums that the modular spindles do not move the wheels out over drums before I'm willing to spend $300.
__________________
I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#22 |
Registered User
Join Date: Jul 2013
Location: Phoenix, AZ
Posts: 119
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Re: CPP Drop Spindles: Conflicting Information
And I'm still waiting for someone at CPP give me an answer about this. I've been getting the run around. I spoke to the person who created the CPP chart that shows the tread width changes for each of their castings. Now they are saying they may have messed...esp with the 1st gen c10 trucks. Since it is their mistake I thought it would be fair to have them let me send the std spindles back and send me either corrected new design std spindles or modulars (I would pay the diff for the modular) but still nothing.
Interesting 'bid d red67' says it is the modulars that move the wheels out 1/16 from drum and not the std spindles.....this is contrary to what I was told by CPP. |
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#23 |
A guy with a truck
Join Date: Sep 2005
Location: Germany, for now
Posts: 5,921
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Re: CPP Drop Spindles: Conflicting Information
Digging it up, stirring the pot, then setting it on fire:
Here’s an easy way we can verify the differences. Straight edge on the wheel mounting surface, measure to the middle of of the lower ball joint (easy to find, it’s the grease fitting). This should eliminate most of the variance between trucks, a-arms, springs, etc. This will require some audience participation; I’ll start. Belltech LD (light duty) 73-87 3” drop spindles. Kore3 C5 brakes (advertised as .03” narrower than a stock rotor, or negligible). I get roughly 4 15/16”. Would be beneficial to see other setups’ measurements, stock, drum, disc, dropped, and most of all, modular. Anyone else care to pull a wheel to help settle this once and for all?
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#24 |
But Found Her 25yrs Later!
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,530
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Re: CPP Drop Spindles: Conflicting Information
Okay thanks.
That's one experience. Anxious to hear more.
__________________
I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#25 |
Registered User
Join Date: Sep 2013
Location: brandenburg ky
Posts: 96
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Re: CPP Drop Spindles: Conflicting Information
read post 62, thats mine, i went from drums to 'supposed to be modulars' and they werent and my tires rubbed, not bad but they did...now i have nodulars and the wheels DO NOT rub and they are the same tire and wheel. when i say rub i mean when hitting a dip in the road they would touch, i dont think it was going to hurt anything but i didnt want it to touch AT ALL. the nodulars are the only way to go!
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