69 C10 12 bolt question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Badger69 · 05-28-2015, 12:21 AM

I am considering converting my rear drums to disc but cannot afford to go any wider because of my wheel/tire combo.

Does any one know if the width of a rear end with drum brakes is the same as one that had been converted to disc?
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Mike C · 05-28-2015, 08:45 AM

It depends on the kit, but usually it is no more than the difference between the thickness of the rotor and the thickness of the drum. Figure 1/4"-3/8" for the rotor "hat" on the one piece rotor and that a drum is between a 1/16" and an 1/8". I would think this 1/4" max difference wouldn't be a deal killer, but my wheels are a really really close fit as well, and it m ight.
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*Fitz* · 05-28-2015, 01:28 PM

Quote:

Originally Posted by Badger69

I am considering converting my rear drums to disc but cannot afford to go any wider because of my wheel/tire combo.

Does any one know if the width of a rear end with drum brakes is the same as one that had been converted to disc?
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Sure. Width is the SAME. Rotor hat and drum mounting face are the same thickness.

67 chevelle · 05-28-2015, 02:35 PM

Hey Fitz ,, how does that thing stop now ,,, was it a night and day difference

Badger69 · 05-29-2015, 09:05 PM

Thanks for the replies.

For what it is worth, I called auto city classic to order the rear disc kit and their brake guy told me it would add between 1/8 and 1/4 inch on each side when I convert. They sell CCP parts.

I have bought a lot of stuff from these guys over the years and have never been steered wrong.

Just thought I'd pass it on.

Fitz, what kit did you use where the measurements were the same?
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05-28-2015, 12:21 AM	#1
Badger69 Registered User Join Date: Jan 2014 Location: Madison, WI Posts: 66	69 C10 12 bolt question I am considering converting my rear drums to disc but cannot afford to go any wider because of my wheel/tire combo. Does any one know if the width of a rear end with drum brakes is the same as one that had been converted to disc? Posted via Mobile Device

05-28-2015, 08:45 AM	#2
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,727	Re: 69 C10 12 bolt question It depends on the kit, but usually it is no more than the difference between the thickness of the rotor and the thickness of the drum. Figure 1/4"-3/8" for the rotor "hat" on the one piece rotor and that a drum is between a 1/16" and an 1/8". I would think this 1/4" max difference wouldn't be a deal killer, but my wheels are a really really close fit as well, and it m ight. Posted via Mobile Device

05-28-2015, 02:35 PM	#4
67 chevelle Registered User Join Date: May 2013 Location: WEST PALM FLORIDA Posts: 1,174	Re: 69 C10 12 bolt question Hey Fitz ,, how does that thing stop now ,,, was it a night and day difference __________________ 68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs 67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive 58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white 69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive

05-29-2015, 09:05 PM	#5
Badger69 Registered User Join Date: Jan 2014 Location: Madison, WI Posts: 66	Thanks for the replies. For what it is worth, I called auto city classic to order the rear disc kit and their brake guy told me it would add between 1/8 and 1/4 inch on each side when I convert. They sell CCP parts. I have bought a lot of stuff from these guys over the years and have never been steered wrong. Just thought I'd pass it on. Fitz, what kit did you use where the measurements were the same? Posted via Mobile Device



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