modify or ditch it ???? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

AntiGov · 01-02-2012, 07:26 PM

anyone modify one of these rear brake load porportioning valves for lift ???

Mike C · 01-02-2012, 09:21 PM

That is one of the earlies attempts at rear anti-lock brakes. My '86 K30 has same. You could build a drop bracket for it, but I would be tempted to eliminate it. Will make running dual exhaust a lot easier...

AntiGov · 01-02-2012, 09:35 PM

Quote:

Originally Posted by Mike C

That is one of the earlies attempts at rear anti-lock brakes. My '86 K30 has same. You could build a drop bracket for it, but I would be tempted to eliminate it. Will make running dual exhaust a lot easier...

I do want to run dual exhaust so maybe it will have to go

joe231 · 01-03-2012, 12:07 AM

Ditch it!
Posted via Mobile Device

Mike C · 01-03-2012, 09:17 PM

I ran my own exhaust, and as for now, the shock on that side is out because either it had to go or the brake stuff. Probably should of killed the brake stuff on mine, but it is just a farm truck.

powerdriver 1958 · 01-03-2012, 09:29 PM

Those were a pain , company trucks were a constant complaint . Finally bypassed all of them and got rid of those valves ...And the complaints

AntiGov · 01-03-2012, 09:34 PM

its kinda of a cool....the more weight you load in the bed the more rear braking powr u have, but after pouring money into this truck i wont be using it to haul wood or hay or anything like that and my camp trailor has its own brakes so I,ll probably get rid of it

**Dieselwrencher** · 01-03-2012, 10:52 PM

Most of the trucks I've owned or worked on that had those, they either leaked, or didn't work. I'd ditch it.

powerdriver 1958 · 01-03-2012, 10:56 PM

The company trucks would get in trouble with the trailer type air compressors . In a panic stop it would take weight off the back and leave you without rear brakes

AntiGov · 01-04-2012, 02:05 PM

thanx for the feedback guys!!! i'll pull it off .....

space wrangler · 01-04-2012, 03:07 PM

you could always ditch the factory setup and go with an aftermarket unit. ..they're much smaller and you can locate them out of the way.

CTENTA1 · 01-05-2012, 04:42 PM

Thats just extra weight thats not needed in my eyes. Trash it.

jlsanborn · 01-14-2012, 01:42 PM

Cool to see another K30 being saved! How bout some pics or a build thread?

Here's mine. I found it after a long search about 12 years ago. It was pretty clapped out as it was an old logging crummy from the east cascades. The underside had "can-opener" cuts in every concievable hole or corner from chain hooks. I've put a lot of work and parts into this thing over the years. As soon as I can find a decent bed and tailgaite, I'll squirt some paint on there (the original red). Bear in mind, this thing's purpose in life is still hard work. It's not ever going to be sweetheart.

Bobby testing the new BFGs on the big block K30 ...

jlsanborn · 01-14-2012, 01:43 PM

Bobby romping on the big block K30 - YouTube

joe231 · 01-14-2012, 04:47 PM

Quote:

Originally Posted by jlsanborn

Bobby romping on the big block K30 - YouTube

Are you even old enough to drive?

Cool truck!!
Posted via Mobile Device

jlsanborn · 01-15-2012, 12:41 PM

That'd be the little knuckle-head doing the driving. He'll be licensed next year if he can get is poop in a group at school. At that time we'll see if we can find him a Geo Metro

joe231 · 01-15-2012, 02:42 PM

Posted via Mobile Device

01-02-2012, 07:26 PM	#1
AntiGov Registered User Join Date: Oct 2011 Location: central Oregon Posts: 1,225	modify or ditch it ???? anyone modify one of these rear brake load porportioning valves for lift ??? Attached Images __________________ 88 3+3 454 400 205 410 drw to srw still in pieces 90 3+3 350 400 205 410 srw 84 1/2 ton lb 6.2 4x4 parts truck

01-02-2012, 09:21 PM	#2
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,727	Re: modify or ditch it ???? That is one of the earlies attempts at rear anti-lock brakes. My '86 K30 has same. You could build a drop bracket for it, but I would be tempted to eliminate it. Will make running dual exhaust a lot easier... __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

01-03-2012, 12:07 AM	#4
joe231 Registered User Join Date: Dec 2007 Location: Palmer, Alaska Posts: 13,821	Re: modify or ditch it ???? Ditch it! Posted via Mobile Device __________________ *CHEVY ONLY*

01-03-2012, 09:17 PM	#5
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,727	Re: modify or ditch it ???? I ran my own exhaust, and as for now, the shock on that side is out because either it had to go or the brake stuff. Probably should of killed the brake stuff on mine, but it is just a farm truck. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

01-03-2012, 09:29 PM	#6
powerdriver 1958 Kid's Mechanic Join Date: Nov 2006 Location: Kansas City Posts: 8,241	Re: modify or ditch it ???? Those were a pain , company trucks were a constant complaint . Finally bypassed all of them and got rid of those valves ...And the complaints

01-03-2012, 09:34 PM	#7
AntiGov Registered User Join Date: Oct 2011 Location: central Oregon Posts: 1,225	Re: modify or ditch it ???? its kinda of a cool....the more weight you load in the bed the more rear braking powr u have, but after pouring money into this truck i wont be using it to haul wood or hay or anything like that and my camp trailor has its own brakes so I,ll probably get rid of it __________________ 88 3+3 454 400 205 410 drw to srw still in pieces 90 3+3 350 400 205 410 srw 84 1/2 ton lb 6.2 4x4 parts truck

01-03-2012, 10:52 PM	#8
Dieselwrencher 6>8 Plugless........ Join Date: Sep 2007 Location: Prairie City, Ia Posts: 17,142	Re: modify or ditch it ???? Most of the trucks I've owned or worked on that had those, they either leaked, or didn't work. I'd ditch it. __________________ Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project *Tired of spark plugs? Check this out.*

01-03-2012, 10:56 PM	#9
powerdriver 1958 Kid's Mechanic Join Date: Nov 2006 Location: Kansas City Posts: 8,241	Re: modify or ditch it ???? The company trucks would get in trouble with the trailer type air compressors . In a panic stop it would take weight off the back and leave you without rear brakes

01-04-2012, 02:05 PM	#10
AntiGov Registered User Join Date: Oct 2011 Location: central Oregon Posts: 1,225	Re: modify or ditch it ???? thanx for the feedback guys!!! i'll pull it off ..... __________________ 88 3+3 454 400 205 410 drw to srw still in pieces 90 3+3 350 400 205 410 srw 84 1/2 ton lb 6.2 4x4 parts truck

01-04-2012, 03:07 PM	#11
space wrangler Registered User Join Date: Jul 2011 Location: Marietta, Ga Posts: 32	Re: modify or ditch it ???? you could always ditch the factory setup and go with an aftermarket unit. ..they're much smaller and you can locate them out of the way.

01-05-2012, 04:42 PM	#12
CTENTA1 Registered 1971 K5 Join Date: Dec 2008 Location: SO.CEN.CAL Posts: 428	Re: modify or ditch it ???? Thats just extra weight thats not needed in my eyes. Trash it.

01-15-2012, 12:41 PM	#16
jlsanborn Registered User Join Date: Jun 2011 Location: Spokane, WA Posts: 2,372	Re: modify or ditch it ???? That'd be the little knuckle-head doing the driving. He'll be licensed next year if he can get is poop in a group at school. At that time we'll see if we can find him a Geo Metro __________________ '77 K30 3+3 - "The Crummy" http://67-72chevytrucks.com/vboard/s...d.php?t=640134 '67 C10 L/SWB - Soon to be daily driver! http://67-72chevytrucks.com/vboard/s...d.php?t=471776

01-15-2012, 02:42 PM	#17
joe231 Registered User Join Date: Dec 2007 Location: Palmer, Alaska Posts: 13,821	Re: modify or ditch it ???? Posted via Mobile Device __________________ *CHEVY ONLY*



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