Rear disc brake question? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cris well · 03-08-2011, 06:03 PM

I found an 8.8 with 3.73 traction-loc from a 99 explorer with disc brakes. It's about 4 or 5 inches narrower than the stock rear but i have some 10" wheels to make up the difference.

My question is should i change the master cylinder or proportioning valve? I've read that some people do and some don't.

It's a 90 2wd silverado with rear ABS.

the_duke · 03-09-2011, 10:13 AM

Are the 10" wheels on your truck now? If so, you know the lug pattern is different from a ford explorer to your truck, correct?

If they are for the ford, are you gonna run two different pair of rims (1 for the front with the 5x5 bolt pattern or the 6 lug bolt pattern, and then 1 for the rear with the 5x4.5 iirc for the explorer bolt pattern)?

cris well · 03-09-2011, 01:52 PM

yea i'm gonna re-drill the axles and rotors to a 5 x 5" pattern.

i thought about using adapters and 8" wheels but i think the 10's will look better tucked in the fenders. i already have both sets of wheels.

i've read that the ABS will compensate for the rear discs without changing the master cylinder and prop valve but i don't know for sure.

i found a master and prop valve for $65 each if i need them at RightStuffDetailing. hopefully i won't need them.

jb1016 · 03-09-2011, 02:13 PM

subscribed. Wanna know how this turns out.

03-08-2011, 06:03 PM	#1
cris well Registered User Join Date: Oct 2009 Location: atlanta, ga Posts: 318	Rear disc brake question? I found an 8.8 with 3.73 traction-loc from a 99 explorer with disc brakes. It's about 4 or 5 inches narrower than the stock rear but i have some 10" wheels to make up the difference. My question is should i change the master cylinder or proportioning valve? I've read that some people do and some don't. It's a 90 2wd silverado with rear ABS.

03-09-2011, 10:13 AM	#2
the_duke Registered User Join Date: Jan 2011 Location: Oklahoma City, Oklahoma Posts: 90	Re: Rear disc brake question? Are the 10" wheels on your truck now? If so, you know the lug pattern is different from a ford explorer to your truck, correct? If they are for the ford, are you gonna run two different pair of rims (1 for the front with the 5x5 bolt pattern or the 6 lug bolt pattern, and then 1 for the rear with the 5x4.5 iirc for the explorer bolt pattern)?

03-09-2011, 01:52 PM	#3
cris well Registered User Join Date: Oct 2009 Location: atlanta, ga Posts: 318	Re: Rear disc brake question? yea i'm gonna re-drill the axles and rotors to a 5 x 5" pattern. i thought about using adapters and 8" wheels but i think the 10's will look better tucked in the fenders. i already have both sets of wheels. i've read that the ABS will compensate for the rear discs without changing the master cylinder and prop valve but i don't know for sure. i found a master and prop valve for $65 each if i need them at RightStuffDetailing. hopefully i won't need them.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.