you want to change your 5X5 bolt pattern on 73-87 disc to 5X4.75

[87 dually burb]

http://www.classicperform.com/Store/...ruck/CP4R5.htm
here is one way

[1942]

Is this spindels the 73-80 style or 81-87 style?

http://www.lmctruck.com/icatalog/cc/full.aspx?Page=55

Looks like great stuff this!

[78-5.3]

do they make an aftermarket disc with the 4.75 bolt pattern for the C10

[78-5.3]

i couldnt find them on that site is do they suit a 78 model ?

[78-5.3]

Originally Posted by lolife99

I Googled them,... and it brought me back here to this thread:
http://www.67-72chevytrucks.com/vboa...d.php?t=388794

Here's the link to POL's website:
http://www.performanceonline.com/DIS...K-5514/?page=1

thanks lowlife99, i apeciate that save me alot of timeand cash with the camaro disc conversion
i have the 1.25 hd disc with 3" DJM DROPPED spindles and i wanna runn my weld pro star rims on the front!!

[crazy longhorn]

Originally Posted by lolife99

I Googled them,... and it brought me back here to this thread:
http://www.67-72chevytrucks.com/vboa...d.php?t=388794

Here's the link to POL's website:
http://www.performanceonline.com/DIS...K-5514/?page=1

I called & had the tec spec the 5514 rotor out, as I plan the same boltpattern swap on my 69. The 5514 is a car rotor(11 diam x 1 thick). It is used to run the camero brakes on the old drum spindles,along with a set of brackets, but not a bolt on replacement for the heavy truck rotor(dang!) just passing the info,crazyAl

[lolife99]

Sorry for giving out wrong info.
They should spell that out on their website.
I apologize.

[lolife99]

I search POL and CPP's website.
It appears the 5x4.75" rotor are for the 11" 69-74 chevelle rotors (thanks crazy longhorn) that use a custom bracket that attaches to a 63-70 "drum brake" front spindle.
These require a 69-72 Camaro caliper.

CPP's complete kit, (part# 6370WBK-5) is $375.00.
Or just the bracket kit for $119.00. Part#6370DBK

Again sorry for the confusion I caused.

[N2TRUX]

Originally Posted by lolife99

Sorry for giving out wrong info.
They should spell that out on their website.
I apologize.

Considering all the great info you provide on here, I think we can let this one slide...

[crazy longhorn]

What the hey.....we are all just working together to find the better way to our "Madness" I dont really want to change spindles & all....so I guess that leaves me to redrill my rotors crazyL

[78-5.3]

like crazy longhorn i dont wanna change my spindles how hard would it be to redrill the spindles , and done correctly how safe???

[Boosted1984Silverado]

Hola gents!

I've read over this thread a few times before joining this forum and am still somewhat confused on this topic. I have a 1984 1/2 ton Silverado. Will the 91 Camaro 1LE performance rotors fit my set up? It's currently a 5x5 and I am really trying to get it to a 5x4.75. Thanks.
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[Boosted1984Silverado]

Also wanted to know if I could use these drop spindles with the 91 Camaro rotors.

http://www.ebay.com/itm/400140456280...84.m1423.l2649

The end result I am looking for is to safely get my 84 Silverado to a 4.5 inch pattern with about a 2" drop and that I can use with a 15" wheel. HELP!
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[gringoloco]

Yes, those spindles, designed for 1" thick rotors, will allow installation of the 5x4.75 camaro 1LE rotors. Post some pics here when you get them on!
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[Boosted1984Silverado]

Thanks for the response gringoloco. I really appreciate it and I will definately repost before and after pics. Gonna rebuild the entire front end while I'm replacing the spindles and installing the new rotors!
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[N2TRUX]

I dont think those brakes will work with 15" wheels. Talk to way2low2 for advice on what will work.

[gringoloco]

Originally Posted by N2TRUX

I dont think those brakes will work with 15" wheels. Talk to way2low2 for advice on what will work.

The 88-92 Camaro 1LE (Heavy Duty) rotor is the exact same blank as the 81-87 light duty truck rotor, which is the same part number as the 78-92 B-body 'big car' 5x5 rotor and will accept the factory light duty truck calipers in the factory position on the truck spindle. The F-body rotor has the same 11.88x1.1" dimensions and bearings as the truck rotor, just with a 5x4.75 bolt pattern instead of 5x5. Upgrading to B-body spindles w/ 1LE rotors is a common practice on GM cars with short spindles-- they gain the camber benefits of the tall spindle and upgrade from 10.5" to 12" rotors. This swap simply capitalizes on the GM pars bin mentality- the only difference between this setup and a 'normal' truck brake setup is the rotors.

All of that to say this: He should only have the same possibility of lower control arm clearance issues that all lowered 63-87 trucks have when using drop spindles with 15" wheels, depending on wheel backspacing.

[N2TRUX]

Its been a while since I played with Camaro stuff, but I remember when there was a big interest in converting to 1LE brakes. Now that I think about it there was one guy that managed to massage them to fit in the stock 15" Camaro wheel. Most everyone else upgraded to the 16"+ IROC wheels and solved the issues.

[gringoloco]

Originally Posted by N2TRUX

Its been a while since I played with Camaro stuff, but I remember when there was a big interest in converting to 1LE brakes. Now that I think about it there was one guy that managed to massage them to fit in the stock 15" Camaro wheel. Most everyone else upgraded to the 16"+ IROC wheels and solved the issues.

Ah, I see- now we're tracking Yes, small diameter car wheels will be very close with the bigger rotors and calipers. As with all custom setups, measure once--cut twice!

[gringoloco]

Originally Posted by gringoloco

...I've been researching this a little. It looks like the aftermarket C5 upgrade brackets might work on the light duty spindles. That is, if the dust shield/backing plates interchange between big car/light truck, then a bracket may already exist to adapt the 'Vette stuff.

More to come when I get some time...

...and to add fuel to the fire- I have found some time/money to play with this, so C5 may be coming very soon. Pics if it works

[gringoloco]

Got some parts today-early measurements say it's gonna work More to come...

[Boosted1984Silverado]

Gringoloco-

My backspacing on my 15" Centerlines is 1.5 inches at best. They are the 15x3 Convo Pros. So I shouldn't have any issues with the 91LE rotor and those drop spindles I linked right? Thanks again.
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[gringoloco]

I wouldn't think so, but convos are drag wheels which aren't generally known for having great brake clearance. Maybe check around the F-body forums to see if anyone is running that combo...
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[Boosted1984Silverado]

Gents,

Instead of ordering drop spindles could I just replace the front springs instead or cut the ones I have now to lower it a couple of inches? I know it will probably change the geometry a little bit and make the ride a little different but I have seen front spring lowering kits and just wanted to get your opinions. Thanks.
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[Boosted1984Silverado]

Guess I can do both do achieve a drop of greater than 2.5 inches. Will post pics soon.
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