vacuum problems

geoemojr · 12-09-2007, 12:39 PM

here is 2 pics of vacuum switches on firewall. I can't figure out what they are and what they do. And need to know where the vacuum lines go. Any help would be appreciated.

72'CaminoKid · 12-09-2007, 09:24 PM

what is this on?

crabtruck · 12-10-2007, 12:30 AM

It's a red v8 automatic with an Edelbrock

Looks older to me...

03chevy · 12-10-2007, 07:41 AM

what is it? like a late 70's to a mid 80's model chevy truck?

mrjohnwayne · 12-10-2007, 09:16 AM

Its gotta be mid 80's. It had a computer controlled distributor. Not sure what those vaccum switches would of been for though, unless one was a MAP sensor or something. Was it always carburated or did it have a tbi setup on it before?

shoman44 · 12-16-2007, 06:47 AM

84-87 chevy

geoemojr · 12-19-2007, 08:28 PM

Sorry I haven't checked back in a while been busy doing rings and rods in a 318. Shoulda mentioned that it was a 86 chevy 350 700r4 4x4 1/2 ton. I believe the one on the right close to master cylinder goes to tranny converter clutch lockup. Had comp stuff in it for tbi with 305, but I bought it with a 350 in it already. Somebody had a lot of loose ends not set up right. Anyway comp is bypassed and it is carbed now. I read somewhere that if the vacuum solenoid to 700r4 isn't hooked up that the tranny slips a little in 4th gear and it gets hot and burns your tranny up faster. It only cost me around $1500-$1800 to have tranny built. And I was just worried about this stuff.

12-09-2007, 12:39 PM	#1
geoemojr Full Member Join Date: Dec 2007 Posts: 12	vacuum problems here is 2 pics of vacuum switches on firewall. I can't figure out what they are and what they do. And need to know where the vacuum lines go. Any help would be appreciated.

12-09-2007, 09:24 PM	#2
72'CaminoKid Senior Member Join Date: Jun 2005 Posts: 2,261	what is this on? __________________ 99 suburban xlt 96 silverado 91 wrangler (my baby ) 08 Honday shadow 750 (my mistress)

12-10-2007, 07:41 AM	#4
03chevy Senior Member Join Date: Dec 2006 Location: jax,fl Posts: 991	what is it? like a late 70's to a mid 80's model chevy truck? __________________ A dirty mind is a terrible thing to waste!

12-10-2007, 09:16 AM	#5
mrjohnwayne Moderator Join Date: Apr 2005 Location: Texas Posts: 3,104	Its gotta be mid 80's. It had a computer controlled distributor. Not sure what those vaccum switches would of been for though, unless one was a MAP sensor or something. Was it always carburated or did it have a tbi setup on it before? __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

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12-10-2007, 12:30 AM	#3
crabtruck Senior Member Join Date: Jul 2007 Posts: 1,464	It's a red v8 automatic with an Edelbrock Looks older to me...

12-16-2007, 06:47 AM	#6
shoman44 Junior Member Join Date: Dec 2007 Posts: 17	84-87 chevy

12-19-2007, 08:28 PM	#7
geoemojr Full Member Join Date: Dec 2007 Posts: 12	Sorry I haven't checked back in a while been busy doing rings and rods in a 318. Shoulda mentioned that it was a 86 chevy 350 700r4 4x4 1/2 ton. I believe the one on the right close to master cylinder goes to tranny converter clutch lockup. Had comp stuff in it for tbi with 305, but I bought it with a 350 in it already. Somebody had a lot of loose ends not set up right. Anyway comp is bypassed and it is carbed now. I read somewhere that if the vacuum solenoid to 700r4 isn't hooked up that the tranny slips a little in 4th gear and it gets hot and burns your tranny up faster. It only cost me around $1500-$1800 to have tranny built. And I was just worried about this stuff.

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