The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-19-2003, 10:20 AM   #1
Speedster 229
Registered User
 
Join Date: Oct 2002
Location: Spokane Wa.
Posts: 36
Perportioning Valve adjustment

On my 70 1/2 ton with power brakes I can't get the line lock to hold. I have all new drum brakes from the master cylinder on. The truck stops fine but when I pump the brakes and then set the line lock it won't hold the truck back for a burn out. I'm running a SBC approx. 400 HP 3:73 posi 7000R4 2800 stall and 315/60R15 Drag Radials. Is there a way to adjust the perportioning valve ??
Any help would be appreciated.
__________________
1970 1/2 ton LWB 350 / 700R Rebuilt top to bottom. Not custom, but really sanitary!!!!!!!!
Speedster 229 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:48 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com