Need help hooking up quadrajet.. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72gmcshorty · 05-11-2005, 09:18 AM

What hoses go where on this thing? Currently I run an edelbrock performer and have three hoses hooked up to it. Power brake, PCV, and distributor. The distributor is an HEI. This quadrajet has about a million hook ups. What goes where?

67chevemall · 05-11-2005, 09:45 AM

The one on the front I pluged the big brake one on the back I pluged.
The small one on the left I put on the dizzy. And the big one on the bottom front
I put on the PVC.
Hope this helps.

woodridge · 05-11-2005, 11:02 AM

Looking at front of carb: upper right,ported for dizzy; lower right, plug (for evap); middle bottom, PCV; lower left, plug (for EGR); upper left, connect to choke pull-off.
Large threaded one in rear for brake booster, any others not showing plug off.

72gmcshorty · 05-11-2005, 07:17 PM

I don't run a choke on my truck so where would I hook up the one to the farthest left (on the choke piece)

**Stocker** · 05-11-2005, 07:50 PM

Mine isn't exactly like your pic, but.... in your pic, the one on the far lower right of the carb body (not the base plate) goes to my dizzy. Next to the left (large one left of center, in the base plate) goes to PCV valve. Big one in the rear is brake booster. Then it gets a bit different.

Above my PCV port and at a downward angle goes to the choke pulloff. Behind the choke and sticking out to the side is one for the stock air cleaner. Not sure which of your remaining 2 ports (on the left) is for what.

72gmcshorty · 05-11-2005, 08:31 PM

Where does this one hook up to?

woodridge · 05-12-2005, 07:22 AM

The one on the far left connects to the choke stove in the manifold. Not a vacume port but draws air through the stove to warm the choke coil and open the choke. If you don't use this plug it and adjust the choke coil so the choke plate stays open at all times.

ronh72c10 · 05-28-2005, 10:00 AM

Got all of the vac lines hooked up except the tranny modulator, which line does it go onto? There are two on the back of the carb, not counting the power brake booster line.

Ron

05-11-2005, 09:18 AM	#1
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	Need help hooking up quadrajet.. What hoses go where on this thing? Currently I run an edelbrock performer and have three hoses hooked up to it. Power brake, PCV, and distributor. The distributor is an HEI. This quadrajet has about a million hook ups. What goes where? Attached Images __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd Last edited by 72gmcshorty; 05-11-2005 at 10:12 AM.

05-11-2005, 09:45 AM	#2
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	The one on the front I pluged the big brake one on the back I pluged. The small one on the left I put on the dizzy. And the big one on the bottom front I put on the PVC. Hope this helps. __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

05-11-2005, 11:02 AM	#3
woodridge Senior Member Join Date: Feb 2005 Location: Maynardville, Tn Posts: 3,030	Looking at front of carb: upper right,ported for dizzy; lower right, plug (for evap); middle bottom, PCV; lower left, plug (for EGR); upper left, connect to choke pull-off. Large threaded one in rear for brake booster, any others not showing plug off. __________________ SEMA Network- Protect our Hobby! 71 C30 in pieces, starting to come together. Click here for A Place For Tennessee Truck Enthusiest To Meet

05-11-2005, 07:17 PM	#4
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	I don't run a choke on my truck so where would I hook up the one to the farthest left (on the choke piece) __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd Last edited by 72gmcshorty; 05-11-2005 at 07:18 PM.

05-11-2005, 07:50 PM	#5
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,811	Mine isn't exactly like your pic, but.... in your pic, the one on the far lower right of the carb body (not the base plate) goes to my dizzy. Next to the left (large one left of center, in the base plate) goes to PCV valve. Big one in the rear is brake booster. Then it gets a bit different. Above my PCV port and at a downward angle goes to the choke pulloff. Behind the choke and sticking out to the side is one for the stock air cleaner. Not sure which of your remaining 2 ports (on the left) is for what. __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

05-11-2005, 08:31 PM	#6
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	Where does this one hook up to? Attached Images __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

05-12-2005, 07:22 AM	#7
woodridge Senior Member Join Date: Feb 2005 Location: Maynardville, Tn Posts: 3,030	The one on the far left connects to the choke stove in the manifold. Not a vacume port but draws air through the stove to warm the choke coil and open the choke. If you don't use this plug it and adjust the choke coil so the choke plate stays open at all times. __________________ SEMA Network- Protect our Hobby! 71 C30 in pieces, starting to come together. Click here for A Place For Tennessee Truck Enthusiest To Meet

05-28-2005, 10:00 AM	#8
ronh72c10 Senior Member Join Date: Jul 2003 Location: Mount Forest, Ontario, Canada Posts: 978	Got all of the vac lines hooked up except the tranny modulator, which line does it go onto? There are two on the back of the carb, not counting the power brake booster line. Ron __________________ 72 Chevy C10 (rust repaired, starting body work) 72 GMC 3/4ton 4x4 72 Chevy C20 Suburban 38 Ford Tudor Humpback Sedan (from the darkside) 67 Pontiac Parisienne 55 Studebaker Commander 2dr Hardtop (Starliner) My Youtube channel with Video Updates!



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