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Old 02-21-2009, 05:36 PM
Hellbilly Hotrods
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speedway rear disc

im looking at purchasing this rear disc brake kit for teh back of my daily.

it would be the one with emergency brake calipers for the 7.5 GM rear.

my question would be on replacement parts. since its my daily, i will eventually need to replace parts of the kit. speedway was no help on the origonal applications of the parts included in their kit. the sales/tech people stated they had no idea, but said that i could buy replacement rotors from them for like 80 bucks each, plush shipping and handling. thats rediculous.

the paking brake calipers appear to be the same that were on my 82 eldorado, or my 79 TA with rear discs. so i believe that is the pad and caliper replacement application.

i have no idea on the rotors. no clue whatsoever.

so, anyway, what i need is to know what the parts store would have to know to buy replacement parts, as well as your opinion on the kit for those of you that hav used it.

thanks, y'all

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Old 02-21-2009, 06:05 PM
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I did the disc brake conversion on my Ford 9 inch. I used Steelsolutions.com kit and was very pleased with it. Check with Classic performance parts (CPP) as well. They sell the kits as does EBC brakes. Those companies will tell you what parts come from what. I know my rotors are from a F150. Most of the kits your looking at including Speedway use the 85 Cadillac Seville rear calipers. These are the easiest to hook up an emergency brake. I'm using these calipers as well and went with the Lokar emergency brake cables which made the install even easier. The Cadillac calipers are a joke. The are difficult to adjust, leak at the pistons and you have to apply the ebrake whenever the car is parked or the adjustment goes out. They are also expensive compared to standard GM calipers. The brake pads would be the same for the 85 Cadillac. I'd advise you to change out your master cylinder to a disc disc type master cylinder. Especially with the cadillac calipers.
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Old 02-21-2009, 07:10 PM
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Originally Posted by dusterbd
im looking at purchasing this rear disc brake kit for teh back of my daily.
Did you click on the "specs" tab on that web page? The info there should allow you to find a rotor (though I've got $10 that says it's just an F-body rotor):

GM 7.5 Rear End Tab

This rotor has the following vital"stats":

* O.D. = 11-5/8"
* Center hole = 2.782"
* Back space = 1-3/4"
* Thickness = .782
* Sits on axle flange or hubface app. 6" O.D.
* Bolt pattern 5 lug on 4-3/4"(chevy/gm)
* This is a "vented" rotor
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