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Old 01-21-2004, 10:09 PM   #1
Daves72'GMC
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Question 1411 750cfm edelbrock carb. ?

I'm taking my origional quadrajet carb. off my truck and putting on a 1411 edelbrock carb. with the electric choke and a edelbrock intake manifold on my 402.Can some please tell me where and how they hooked up their vacuum line to the brake booster to the carb.? Thank you. Dave
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Old 01-21-2004, 10:14 PM   #2
gregsplace
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Hooked mine up to port on intake in front of distributer. You just need to get right fitting. most "good" part store should have them.
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Old 01-21-2004, 11:32 PM   #3
Daves72'GMC
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The fitting in front of the distributor on the intake manifold which has 2 ends sticking out of the it goes to the modulator valve and the A/C and the Vacuum line coming out of the back of the Quadrajet is hooked to the brake booster. If I put on an edelbrock carb. where do I run the vacuum for the brake booster? Does the edelbrock carb. have a place for a vacuum line on the back of it or somewhere on it where I can hook it up to the brake booster? Thank you. Dave
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Old 01-22-2004, 11:47 PM   #4
gregsplace
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I can send you a pic of the fitting that will do all three(a/c, vacuum modulator on tranny, and brake booster) sending you pm, greg
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67 3/4 4x4 402,a/t,flat bed
98 GMC Sierra swb daily driver
87 burb parting out.
68 1/2 chevy, 350/350, 71 gmc frame, kid's beater
69 1ton 396-4sp, dump
69 swb stepside 396/400th current frameup
67 swb 454/400th rebuilding now, oldest boy just rolled it
99,HD, Road King Classic
Colwich Ks
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Old 01-22-2004, 11:55 PM   #5
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The brake vacuum comes from the fitting on the back of the carb. The Tranny vac comes from the fitting in the intake manifold just behind the carb, and the front left fitting as you look from the front of the truck is the ported vac for the dist., the middle port is for the PCV Valve, and the right fitting is either plugged or full manifold vac. I may have the left and right fitting criss-crossed, but I am sure someone will correct me if I do. The carb came with a fitting for the brake vac to fit the existing pipe/vac line from the booster to the carb. Do it right, not just so it will WORK.
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