Replacement Carburetor Suggestions
Instructor
Joined: Feb 2011
Posts: 205
Likes: 0
From: Laquey Missouri
I pulled my Quad and replaced it a "Lars" rebuilt and tuned Holley 4175. Very happy with it, no lag off idle and better gas mileage. I also changed my intake and went with the Edelbrock performer.
Melting Slicks
Joined: May 2006
Posts: 3,438
Likes: 41
From: Raleigh NC
St. Jude Donor '13-'14
I believe what people are suggesting is that it may not be a carburetor issue. Personally, I feel that GM has engineered each carburetor to best match your (stock) engine.
Others prefer a Holley spreadbore, such as the 4165 or 4175. There may be fitment issues. The 6210-3 did not fit on my '69 L46 stock set-up - Bubba made some interesting modifications to make it fit. I replaced it with the correct quadrajet tuned by Lars.
Others prefer a Holley spreadbore, such as the 4165 or 4175. There may be fitment issues. The 6210-3 did not fit on my '69 L46 stock set-up - Bubba made some interesting modifications to make it fit. I replaced it with the correct quadrajet tuned by Lars.
Drifting
Joined: Jun 2013
Posts: 1,269
Likes: 226
From: Cocoa FL
Racer
Joined: Oct 2013
Posts: 254
Likes: 3
From: Tampa Bay Florida
I recently had my stock carburetor rebuilt, 3 times actually. The shop came highly recommended but I've had nothing but problems. Each time they rebuild and/or adjust the carburetor, the car runs fine for a day or so and then the starting problems return. Oftentimes, the car starts fine when cold but once I turn it off, it becomes increasingly difficult to restart it. I'm fed up with all these problems and have decided to replace the carburetor. Can anyone recommend a proper direct fit replacement? I live in California, so it should be 50 state legal and, being a C3, I don't have much hood clearance to accommodate a thick adapter plate. Any assistance will be greatly appreciated. Thanks.
Thread Starter
Pro
Joined: Oct 2012
Posts: 585
Likes: 2
From: Los Angeles California
I called J&D Corvette today, they haven't been able to look at the car yet, so the problems remain a mystery. I'm hoping to hear back from them by Friday. I'll post the results, whatever they may be. Again, thank you all for your input and suggestions. I find them very helpful.
Thread Starter
Pro
Joined: Oct 2012
Posts: 585
Likes: 2
From: Los Angeles California
76Vett, did you replace the intake because you wanted to or to better accommodate the Holley 4175?
Thread Starter
Pro
Joined: Oct 2012
Posts: 585
Likes: 2
From: Los Angeles California
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Team Owner
Joined: May 2001
Posts: 87,409
Likes: 1,595
From: Western NY
Racer
Joined: Oct 2013
Posts: 254
Likes: 3
From: Tampa Bay Florida
Thanks, this is what I've come across so far. The specs on the carbs that I've looked at (Holley & Edelbrock) don't say if they are a direct fit (without adapters) and I'm concerned that adapters will cause clearance issues. I don't want to invest that much money on something that will require creative modifications.
I called J&D Corvette today, they haven't been able to look at the car yet, so the problems remain a mystery. I'm hoping to hear back from them by Friday. I'll post the results, whatever they may be. Again, thank you all for your input and suggestions. I find them very helpful.
I called J&D Corvette today, they haven't been able to look at the car yet, so the problems remain a mystery. I'm hoping to hear back from them by Friday. I'll post the results, whatever they may be. Again, thank you all for your input and suggestions. I find them very helpful.
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
Any other type or brand of carb is probably going to present installation or compatibility issues, gain NOTHING in performance or economy and if it's of the same poor condition as the existing carb, be back at square one.
Team Owner
Joined: May 2001
Posts: 87,409
Likes: 1,595
From: Western NY
The OP needs to have his original Qjet rebuilt PROPERLY if indeed the issue is the carb.
Any other type or brand of carb is probably going to present installation or compatibility issues, gain NOTHING in performance or economy and if it's of the same poor condition as the existing carb, be back at square one.
Any other type or brand of carb is probably going to present installation or compatibility issues, gain NOTHING in performance or economy and if it's of the same poor condition as the existing carb, be back at square one.
Burning Brakes
Joined: Oct 2011
Posts: 956
Likes: 86
From: McDonough Georgia
Q junk is garbage. Best left to the dog pile of time.
Holley is the only way to go for dependability, ease of tuning, ease of getting parts and any piece of mind.
However, in your case timing sounds like more the culprit.
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
He was right.
Burning Brakes
Joined: Oct 2011
Posts: 956
Likes: 86
From: McDonough Georgia
"Where have all the q jets gone? Long time passing
Where have all the q jets gone? Long time ago
Where have all the q jets gone?
Gone to graveyards every one
When will they ever learn, when will they ever learn?"
Holley.....Last Man Standing and still the King.
Advanced
Joined: Oct 2012
Posts: 85
Likes: 4
From: Fort Worth Texas
Have you been having to add coolant during the hard start problems?
I have seen cars that have had head gaskets leaking causing extended cranking time.
This usually happens when the car sits for a few hours and lets some water seep into the cylinders.
I have seen cars that have had head gaskets leaking causing extended cranking time.
This usually happens when the car sits for a few hours and lets some water seep into the cylinders.
Thread Starter
Pro
Joined: Oct 2012
Posts: 585
Likes: 2
From: Los Angeles California
No, coolant levels have remain constant.