What vaccum lines can i eliminate? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

C10 the GEM · 11-23-2008, 12:15 AM

I have a 83 chevy c10 with a 305 sb. Which vaccum lines can i eliminate on this motor. It is all stock. Or which lines do i need?

SSC's76 · 11-23-2008, 10:37 AM

Well you can remove nearly all of them but if you have an air pump your gonging to have to remove the belt after removing all the vac lines so it doesent blow the mufflers out by poping out the exh. The only lines you need are brakes, vacuum advance and heater/ac vacuum if applicable.

neonlarry · 11-23-2008, 10:48 AM

Plus PVC.

worthirt_99 · 11-23-2008, 11:33 AM

I have a 85 with a 305. Here is what I have hooked up, It was mentioned before, but I'll do it again. I have the vacuum advance, line from the PCV, and the brake booster line to the carb (brake booster on mine is a hard line that screws into the back), and I have the heater+A/C line (it's a little plastic one going into the firewall) hooked into the intake. Don't forget to remove your smog pump as stated before and use plugs or something to block off all open vacuum line holes on the carb and intake after you are done. I forgot to do that and my truck ran like crap until I got all of the ports blocked off, and I do mean ALL of them. Truck runs great now, I did find that for some reason I needed a tune up after removing all the emissons stuff. It was no biggie since it was time to do one anyway.

11-23-2008, 12:15 AM	#1
C10 the GEM Smok'em Roast'em Shift'em Join Date: Jan 2008 Location: Massapequa, NY Posts: 110	What vaccum lines can i eliminate? I have a 83 chevy c10 with a 305 sb. Which vaccum lines can i eliminate on this motor. It is all stock. Or which lines do i need? Last edited by C10 the GEM; 11-23-2008 at 12:17 AM.

11-23-2008, 10:37 AM	#2
SSC's76 No No Join Date: Jun 2005 Location: Pueblo Colorado Posts: 1,781	Re: What vaccum lines can i eliminate? Well you can remove nearly all of them but if you have an air pump your gonging to have to remove the belt after removing all the vac lines so it doesent blow the mufflers out by poping out the exh. The only lines you need are brakes, vacuum advance and heater/ac vacuum if applicable. __________________ 1976 Custom Deluxe SWB Med FMB.3/4 Drop. Gen VI 454, Muncie HD 3 speed With Modified OE Hurst Shifter, 3.73 12 bolt, GMPP HO roller cam, Hooker headers, Performer intake with modified Q-jet, Accel distributor. Best 1/4 12.3 @108. Funnest run 19.84 @88 full 1/4 mile burn out. 1997 K1500 ext cab 5.7 stock except muffler

11-23-2008, 10:48 AM	#3
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,746	Re: What vaccum lines can i eliminate? Plus PVC. __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI Last edited by neonlarry; 11-23-2008 at 10:49 AM.

11-23-2008, 11:33 AM	#4
worthirt_99 Registered User Join Date: Jun 2008 Location: Moore, OK Posts: 41	Re: What vaccum lines can i eliminate? I have a 85 with a 305. Here is what I have hooked up, It was mentioned before, but I'll do it again. I have the vacuum advance, line from the PCV, and the brake booster line to the carb (brake booster on mine is a hard line that screws into the back), and I have the heater+A/C line (it's a little plastic one going into the firewall) hooked into the intake. Don't forget to remove your smog pump as stated before and use plugs or something to block off all open vacuum line holes on the carb and intake after you are done. I forgot to do that and my truck ran like crap until I got all of the ports blocked off, and I do mean ALL of them. Truck runs great now, I did find that for some reason I needed a tune up after removing all the emissons stuff. It was no biggie since it was time to do one anyway.



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