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03-18-2018, 04:07 PM
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#1 |
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Registered User
Join Date: May 2014
Location: Mission BC
Posts: 452
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Brake booster question. 72 K10
Ok here's my question...I have a 6.0 LQ4 and Th350 in my 72...I have been driving it lots lately. I noticed that the brakes didn't seem to be as good as they were with the old 350. I changed the front pads and installed a new Raybestos master cylinder as the old one had 1 bale on the top and leaked fluid out the top. Brakes have been bled many times and master was bench bled. I even jacked up the front of the truck so master was level...
The old 350 idled around 850-900, but the LS idles around 600-650 could lack of vacuum cause less braking power (more effort on pedal)? The pedal is rock hard with 1-1.5 inches of travel and truck will stop. Booster has vacuum if I pull off the vacuum hose after engine is off. So could it be the proportioning valve? Or should I convert to hydro boost? Or get a different dual diaphragm booster setup?
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1962 C10 Longbox LS 5.3 4L60E----Sold$$ 2014 Ram 4x4 3500 Laramie Diesel..Momma's truck 2015 Ram 4x4 1500 1997 Boxster. 1972 K10 Custom Deluxe LS 6.0 1950 GMC 3100 S10 & LS swapped |
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