help with hoses - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tracterman2 · 03-01-2007, 10:19 AM

okay when I bought my truck the carb had been taken off and rebuilt, then it sat in the seat of the truck...well there is nothing to putting the carb on and all...if I knew where all the vacuum hoses went...since it was off I never saw it all together. Then only one I'm sure of is the PCV. This is a 1970 Custom/10...It has no options, a 307 and a two barrel carb..everything is stock and I plan on going back that route...well except for my HEI and Int. Reg alternator...just for reability sake. It also has the Powerglide. When looking at the engine, on the left side, right next to where the carb goes there is a vacuum module...one plug going in and looks like two going out..I'll include a pic of the engine..although it is old and you my not be able to see anything. This truck does not have a/c or power brakes or steering. A picture of a stock 307 where you can see all the lines would be awsome. Thank you for your help.

JimKshortstep4x4 · 03-01-2007, 08:03 PM

It looks like your engine has the remains of the TCS system, (Transmission Controlled Spark). A lot of the guys remove the setup as it does not allow the vacuum advance to work unless the engine is warm and the tranny is in high gear.

Jim

tracterman2 · 03-01-2007, 09:09 PM

okay I understand what you are saying with that...but what do you do to remove it?? is that the hose from the manifold to the tranny?? what do I need and not need in the way of vacuum attached to my carb?? I know I need the advance on the dizzy...and the pcv hooked up...what else is there?? I'm wodering what that junction is...does it control the choke or what?? I hope people chime in so I can get my carb all setup right. on the 2barrel what pushes and what pulls vacuum on it?? I've always replaced vacuum lines...never started from scratch so I really need help in knowing what goes where and what I need and don't need.

tracterman2 · 03-01-2007, 09:20 PM

okay I just saw a diagram of the vacuum hoses on a truck...I forgot about these...does anyone have a service manual for a truck like mine that has the routing and would be willing to take a pic of it and post it...that would be awsome..I'm hoping to do this this weekend...thanks for any help

03-01-2007, 10:19 AM	#1
tracterman2 Registered User Join Date: Jan 2007 Location: Nashville, Arkansas Posts: 96	help with vacuum hoses okay when I bought my truck the carb had been taken off and rebuilt, then it sat in the seat of the truck...well there is nothing to putting the carb on and all...if I knew where all the vacuum hoses went...since it was off I never saw it all together. Then only one I'm sure of is the PCV. This is a 1970 Custom/10...It has no options, a 307 and a two barrel carb..everything is stock and I plan on going back that route...well except for my HEI and Int. Reg alternator...just for reability sake. It also has the Powerglide. When looking at the engine, on the left side, right next to where the carb goes there is a vacuum module...one plug going in and looks like two going out..I'll include a pic of the engine..although it is old and you my not be able to see anything. This truck does not have a/c or power brakes or steering. A picture of a stock 307 where you can see all the lines would be awsome. Thank you for your help. Attached Images __________________ I'm Your Huckleberry. You Ain't No Daisy. Last edited by tracterman2; 03-01-2007 at 12:46 PM.

03-01-2007, 08:03 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: help with vacuum hoses It looks like your engine has the remains of the TCS system, (Transmission Controlled Spark). A lot of the guys remove the setup as it does not allow the vacuum advance to work unless the engine is warm and the tranny is in high gear. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

03-01-2007, 09:09 PM	#3
tracterman2 Registered User Join Date: Jan 2007 Location: Nashville, Arkansas Posts: 96	Re: help with hoses okay I understand what you are saying with that...but what do you do to remove it?? is that the hose from the manifold to the tranny?? what do I need and not need in the way of vacuum attached to my carb?? I know I need the advance on the dizzy...and the pcv hooked up...what else is there?? I'm wodering what that junction is...does it control the choke or what?? I hope people chime in so I can get my carb all setup right. on the 2barrel what pushes and what pulls vacuum on it?? I've always replaced vacuum lines...never started from scratch so I really need help in knowing what goes where and what I need and don't need. __________________ I'm Your Huckleberry. You Ain't No Daisy.

03-01-2007, 09:20 PM	#4
tracterman2 Registered User Join Date: Jan 2007 Location: Nashville, Arkansas Posts: 96	Re: help with vacuum hose okay I just saw a diagram of the vacuum hoses on a truck...I forgot about these...does anyone have a service manual for a truck like mine that has the routing and would be willing to take a pic of it and post it...that would be awsome..I'm hoping to do this this weekend...thanks for any help __________________ I'm Your Huckleberry. You Ain't No Daisy.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.