Lets talk about distribution blocks! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ackattack · 09-30-2008, 01:59 PM

So I'll be running disc brakes on all 4 corners and need a distribution block. I have a few floating around. One is from a 72 3/4ton (so front discs, rear drums). The other one is from my 68 C10, but it had disc brakes on the front when I bought it. So I don't know if this one is a drum-drum or disc-drum distribution block.

I want a drum-drum distribution block. Are there any identifing marks on the blocks to be able to identify them?

Thanks

**Yukon Jack** · 10-01-2008, 11:08 AM

Bump.

Frizzle Fry · 10-01-2008, 11:51 AM

Are you talking about a proportioning valve? And why run drum-drum when you will have 4wheel disc? CPP sells a disc-disc prop valve.

Ackattack · 10-01-2008, 02:05 PM

Isn't the block that is right under the master cylinder the distribution block?

My thinking is that a disc-drum has bias built in to actuate the brakes correctly, where as the drum-drum doesn't bias it any and therefore will work with a disc-disc setup.

What distribution block (or proportioning valve if that is what its called) are you running Frizzle?

1968SWBBigBlock · 10-01-2008, 02:06 PM

Put a Wilwood valve on and call it a day - it looks trick, works well and costs less than an OE set up

uno67 · 10-01-2008, 08:09 PM

I think your on the right track, i remeber hearing something about if you have 4 wheel disc you can get away with using the distribution block from the 4 wheel drum application.

Ackattack · 10-01-2008, 08:21 PM

Quote:

Originally Posted by uno67

I think your on the right track, i remeber hearing something about if you have 4 wheel disc you can get away with using the distribution block from the 4 wheel drum application.

ya know, now that I think about it, and read 1968SWBBigBlock's post, maybe I don't even need one. Just put an aftermarket porportioning valve on it. Maybe I'm trying to over complicate it.

Frizzle Fry · 10-02-2008, 01:24 PM

Quote:

Originally Posted by Ackattack

What distribution block (or proportioning valve if that is what its called) are you running Frizzle?

http://www.classicperform.com/Store/...ruck/PVKS2.htm

09-30-2008, 01:59 PM	#1
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,525	Lets talk about distribution blocks! So I'll be running disc brakes on all 4 corners and need a distribution block. I have a few floating around. One is from a 72 3/4ton (so front discs, rear drums). The other one is from my 68 C10, but it had disc brakes on the front when I bought it. So I don't know if this one is a drum-drum or disc-drum distribution block. I want a drum-drum distribution block. Are there any identifing marks on the blocks to be able to identify them? Thanks __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index

10-01-2008, 11:08 AM	#2
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Re: Lets talk about distribution blocks! Bump. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

10-01-2008, 11:51 AM	#3
Frizzle Fry Registered User Join Date: Aug 2005 Location: Hillsboro Oregon Posts: 6,449	Re: Lets talk about distribution blocks! Are you talking about a proportioning valve? And why run drum-drum when you will have 4wheel disc? CPP sells a disc-disc prop valve.

10-01-2008, 02:05 PM	#4
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,525	Re: Lets talk about distribution blocks! Isn't the block that is right under the master cylinder the distribution block? My thinking is that a disc-drum has bias built in to actuate the brakes correctly, where as the drum-drum doesn't bias it any and therefore will work with a disc-disc setup. What distribution block (or proportioning valve if that is what its called) are you running Frizzle? __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index

10-01-2008, 02:06 PM	#5
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Re: Lets talk about distribution blocks! Put a Wilwood valve on and call it a day - it looks trick, works well and costs less than an OE set up __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree

10-01-2008, 08:09 PM	#6
uno67 Registered User Join Date: Mar 2003 Location: Tucson, Az Posts: 185	Re: Lets talk about distribution blocks! I think your on the right track, i remeber hearing something about if you have 4 wheel disc you can get away with using the distribution block from the 4 wheel drum application.



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