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05-15-2003, 08:14 PM
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#1 |
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*Proud Member*
Join Date: Nov 2002
Location: Pittsburgh, PA
Posts: 741
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Vaccum lines... help a guy out! :-)
okay, here's the deal. i have a SBC 350 w/ an automatic TH350. i have two carb vaccum lines, one of which goes to the distributor. originally, the vaccum out of my holley intake went to my tranny, however, i need vaccum for my pwr brake booster, so i ran the line to the intake, and then switched the tranny line to the carb. will this setup work??
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05-15-2003, 08:38 PM
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#2 |
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Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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the trans needs full manifold vacuum at all times....
the power brake booster needs the same thing..... the carb.vacuum ports are designed for switches and dist... the ported vacuum outlet on the carb(vacuum increases w/rpm) is where the dist. goes may want to buy orlook for a different vacuum fitting to go on the intake w/3/8" for booster..might be 5/16". and the 3/16 for the trans. 
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05-15-2003, 11:29 PM
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#3 |
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*Proud Member*
Join Date: Nov 2002
Location: Pittsburgh, PA
Posts: 741
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thanks for your imput and help on this.... its difficult to know about this type of thing when the truck hasn't moved yet... although its comin' up soon... i'll split that vaccum line tomorrow so i'm all set up
 thanks again 
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05-16-2003, 02:08 AM
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#4 |
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Gentleman Jim Driver
Join Date: Nov 2002
Location: Poulsbo, WA
Posts: 1,550
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You don't need to split the line on the manifold. Which carb are you running? Edelbrocks, Holley's and Quadrajets all have a manifold vacuum port. Let me know which it is and I'll dig up a picture and put an arrow on it. Splittling the vacuum on the manifold will of course work too...
__________________
Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed |
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05-16-2003, 10:45 AM
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#5 |
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www.73-87chevytrucks.com
 
Join Date: Dec 1999
Location: Birmingham, AL
Posts: 6,935
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Ports for all those should be in the base of the carb. But, splitting will work as has been said.
__________________
Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com |
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05-17-2003, 01:01 AM
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#6 |
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*Proud Member*
Join Date: Nov 2002
Location: Pittsburgh, PA
Posts: 741
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i'm running an edelbrock carb...
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