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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.
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1970 1/2 ton LWB 350 / 700R Rebuilt top to bottom. Not custom, but really sanitary!!!!!!!!
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09-19-2003, 10:20 AM
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