anyone know of a rotor with 4.75" circle for C-10 chevy truck?

[dave brode]

Anyone know of a drop on rotor for the older chev trucks that has a "chevelle" bolt pattern? I could probably re-drill the stock rotors, but I was hoping something might fit. Afaik, the rotors are 12".

TIA
Dave

 

[gary kosier]

Dave,
Look for a 1974 1/2 ton van.  It had the 4 3/4" bolt pattern.
75 and later was the same with a 5' bolt pattern.  I learned this
ther hard way.  I still have a new set of wagon-spoke wheels
for the 74.

Gary Kosier

 

[dave brode]

Thanks Gary. i'll check that out.

Dave

 

[grendel]

Dave,
Look for a 1974 1/2 ton van.  It had the 4 3/4" bolt pattern.
75 and later was the same with a 5' bolt pattern.  I learned this
ther hard way.  I still have a new set of wagon-spoke wheels
for the 74.

Gary Kosier

Exactly, I used this on a 70 Chevy to convert to disk brakes and Chevelle wheels.

 

[dave brode]

Exactly, I used this on a 70 Chevy to convert to disk brakes and Chevelle wheels.

you remember if they were 11" or 12"? Advanced lists 71-74 van rotor different than '75 up, but lists it as fitting a bunch of cars too.

thanks.
Dave

 

[STDog]

RAYBESTOS Part # 5006R
ACDELCO Part # 18A2

Were the only rotors I see for a '74 Chevy Van (not counting the 8bolt hubs).
Those are 11.86" rotors, but are 5on5.
They are a one piece design was used starting in '71 (at least on the Cadillacs). They fit lots of vehicles, into the 80s.

you remember if they were 11" or 12"? Advanced lists 71-74 van rotor different than '75 up, but lists it as fitting a bunch of cars too.

That's probably the two-piece to one-piece switch in '71. I'd expect the smaller pattern to be 11".
The above 5on5 rotors are 12" and I cannot think of a reason for two 12" rotors.

 

[dave brode]

The 71-74 van looks like it had *car* brakes.

http://www.partsamerica.com/ProductList ... 21&PTSet=A

http://www.partsamerica.com/ProductGuid ... r=YH141040

Different than '75 up van;

http://www.partsamerica.com/ProductGuid ... r=YH141043

Dave

 

[STDog]

The 71-74 van looks like it had *car* brakes.
http://www.partsamerica.com/ProductGuid ... r=YH141040

RAYBESTOS Part # 5214R {Professional Grade Outside Diameter 11.005" / 5 Bolt Holes}
Front

Different than '75 up van;

http://www.partsamerica.com/ProductGuid ... r=YH141043

That's the 5on5 rotor. It also fit 68-71 RWD Cads is you use the 72+ seal.

 

[dave brode]

STDog,

As I feared. Trucks are 12". If there is no 12" rotor to fit, it's probably best to re-drill rotors. There is a 12" rotor from camaro/firebird with some sort of option package, but it might drop into truck spindles.

thanks.
Dave

 

[STDog]

As I feared. Trucks are 12". If there is no 12" rotor to fit, it's probably best to re-drill rotors. There is a 12" rotor from camaro/firebird with some sort of option package, but it might drop into truck spindles.

Check the bearings, particularly the inner diameter/shaft size.
A spacer, to center the rotor in the caliper, is simple enough.

 

[LowCad]

Check out these guys at ABS Power Brake http://www.abspowerbrake.com/

Nice people to work with.

That's where I bought a complete drum-to-disc brake conversion for my '67 Cad.

They might have some vor you application as well, or are willing to help you out with some of you questions.