carbureation questions... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chevjayfsd · 07-25-2002, 09:05 PM

We have went through 4 remanufactured Quadrajets and none of them have worked except the last one and it hesitates an awful lot. Can anyone tell me what kind of carb to buy or where to get a decen Quad???
thanks
Jason

Blk70 · 07-25-2002, 09:45 PM

Funny you should mention the "4" Quads you went thru. I had a similar experience, and wanted to stay as close to stock as possible with my basically stock 350. As soon as I installed it, it had problems. I could not get it to hold a decent idle without dying at some point. Even took it to an mechanoc friend and he did a vacuum test on this supposedly '"reman" carb and found an internal leak. Sent it back, and got a "this is gonna piss some die hards off" Holley 6210 with the divorced style choke, and bolted it right up to my mani-since it has a spread bore flange. Right out of the box, it was beautiful, holds a nice idle even on a hot So.Cal day with the A/C going, and it is a pleasure to hear those secondaries open up. Funny..........I wasn't even a big Holley fan until now.

Sinister · 07-25-2002, 10:20 PM

i'm running a quad i got from my girlfriends brother, (he works in a carb shop), it runs great, all tuned and everything...
but i would highly recommend those edelbrock square bores that everyone on the board loves so much...
i had a 1407, ran great right out of the box...
we just bolted a 600cfm one on my buddies el camino and he loves it...

72MARIO · 07-25-2002, 10:53 PM

Hey Jason how much did you lower your truck I love the way it sits I hope mine is a fairly close stance to yours . My frame is together but the body is not on it yet so I dont have the assurance that I am going to like the 3.5 / 5 drop .I just picked up my body mount kit and the 67 front fenders today all I have left to do to my frame is put the brake s on then a bit of work to the cab before it is ready for paint I hope to get a red very similar to yours.

Love your truck it looks Dope!

mikep · 07-26-2002, 12:43 AM

Quadrajets are sensitive to fuel pressure. If you went through 4 of them I'd start looking for something else . I had to put a fuel pressure requlator in line to my quad to get it to stop surging and cutting out. It was going over rich and running rough until I did that . Runs great now at 4psi line pressure.

ChevLoRay · 07-26-2002, 11:33 AM

I removed an Edelbrock 1405 from my '69 350, and installed a new Edelbrock Q-Jet. No problemo. Nothing really wrong with the 1405, but it needed a rebuild, and I caught the 'Zone with their britches down around their ankles when they shot me a price of $289 for the new Edelbrock Q-Jet! Advanced Auto parts and NAPA couldn't touch it. My Edelbrock catalog has it priced in excess of $500. Yeah, I know I coulda had the 1405 rebuilt for less money. But, I WANTED the Q-Jet.

Wootdog · 07-26-2002, 12:21 PM

I have the Edlebrock 600 with electric choke. Got it from Advance Auto parts. It works like a charm. Wootdog

misfits · 07-26-2002, 07:28 PM

I love my quadrajet. Never had a problem with it. It works a heck of a lot better than the holley ive got. Maybe i'm just lucky.

07-25-2002, 09:05 PM	#1
chevjayfsd Project 7dos Join Date: Aug 2001 Location: Abilene, Texas Posts: 876	carbureation questions... We have went through 4 remanufactured Quadrajets and none of them have worked except the last one and it hesitates an awful lot. Can anyone tell me what kind of carb to buy or where to get a decen Quad??? thanks Jason __________________ 7DOS - 1972 C-10 350/350 Porterbuilt/Accuair 20x8.5/20x10 Ride Low or Die PSSST - Yes it's bagged. 7dos build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=610290

07-25-2002, 09:45 PM	#2
Blk70 Registered User Join Date: Jun 2001 Location: Southern California Posts: 33	Funny you should mention the "4" Quads you went thru. I had a similar experience, and wanted to stay as close to stock as possible with my basically stock 350. As soon as I installed it, it had problems. I could not get it to hold a decent idle without dying at some point. Even took it to an mechanoc friend and he did a vacuum test on this supposedly '"reman" carb and found an internal leak. Sent it back, and got a "this is gonna piss some die hards off" Holley 6210 with the divorced style choke, and bolted it right up to my mani-since it has a spread bore flange. Right out of the box, it was beautiful, holds a nice idle even on a hot So.Cal day with the A/C going, and it is a pleasure to hear those secondaries open up. Funny..........I wasn't even a big Holley fan until now. __________________ 1970 GMC Shortbed 350 Chevy/Automatic

07-25-2002, 10:20 PM	#3
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	i'm running a quad i got from my girlfriends brother, (he works in a carb shop), it runs great, all tuned and everything... but i would highly recommend those edelbrock square bores that everyone on the board loves so much... i had a 1407, ran great right out of the box... we just bolted a 600cfm one on my buddies el camino and he loves it... __________________ Beat it to fit, Paint it to match...

07-25-2002, 10:53 PM	#4
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	Hey Jason how much did you lower your truck I love the way it sits I hope mine is a fairly close stance to yours . My frame is together but the body is not on it yet so I dont have the assurance that I am going to like the 3.5 / 5 drop .I just picked up my body mount kit and the 67 front fenders today all I have left to do to my frame is put the brake s on then a bit of work to the cab before it is ready for paint I hope to get a red very similar to yours. Love your truck it looks Dope! __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD Last edited by 72MARIO; 07-25-2002 at 10:56 PM.

07-26-2002, 12:43 AM	#5
mikep Used to have a truck Join Date: May 2002 Location: port orchard WA Posts: 1,552	Quadrajets are sensitive to fuel pressure. If you went through 4 of them I'd start looking for something else . I had to put a fuel pressure requlator in line to my quad to get it to stop surging and cutting out. It was going over rich and running rough until I did that . Runs great now at 4psi line pressure. __________________ No truck :-(

07-26-2002, 11:33 AM	#6
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	I removed an Edelbrock 1405 from my '69 350, and installed a new Edelbrock Q-Jet. No problemo. Nothing really wrong with the 1405, but it needed a rebuild, and I caught the 'Zone with their britches down around their ankles when they shot me a price of $289 for the new Edelbrock Q-Jet! Advanced Auto parts and NAPA couldn't touch it. My Edelbrock catalog has it priced in excess of $500. Yeah, I know I coulda had the 1405 rebuilt for less money. But, I WANTED the Q-Jet. __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

07-26-2002, 12:21 PM	#7
Wootdog Senior Member Join Date: Jan 2001 Location: Virginia Beach, Va, USA Posts: 1,683	I have the Edlebrock 600 with electric choke. Got it from Advance Auto parts. It works like a charm. Wootdog __________________ 1967 C10 Got it back after three years Boy I sure missed Peppy 1969 Chevelle 1990 IROC Z Convertible 2002 Silverado LT

07-26-2002, 07:28 PM	#8
misfits Registered User Join Date: Feb 2001 Location: Sturgeon Bay , WI USA Posts: 375	I love my quadrajet. Never had a problem with it. It works a heck of a lot better than the holley ive got. Maybe i'm just lucky.



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