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08-04-2012, 07:31 PM
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Stick with the q-jet they have a lot less tuning issues , not knocking holley I like them also but if you have never tuned one it could be a horrible nightmare for you. The name of a good performance shop that deals with q-jets and holleys is the Carb shop they can take care of any problem with a q-jet and they are pretty reasonable on their prices.
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08-09-2012, 10:34 AM
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I'm wondering about something. Earlier in this thread, someone mentioned that a carb adapter is a big no-no. So I got to looking at this set-up. The intake is a Victor Jr., which appears to be a square bore intake, and the Q-Jet appears to be mounted to an adpter plate. So assuming I was going to replace the carb with something else, if I wanted to not use the adapter plate, I'd need a square bore carb, not a spread bore, is that correct?
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08-09-2012, 10:42 AM
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whats the victor junior bolted to? use a square bore double pumper on a vic jr
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08-09-2012, 10:54 AM
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Quote:
Edelbrock 2693 - Edelbrock Carburetor Adapters - Overview - SummitRacing.com A lot of people say adapters are bad. I can see how necking down a spreadbore to a squarebore could cause problems when the secondaries open, but by the time you are opening the secondaries you are not worried about throttle response, etc. Primaries I think the impact would be minimal at best. I have been trying to find any dyno numbers on the subject and not been successful. Also since the adapters are open spacer plenums that would tend to mitigate any negative impacts on a dual plane intake.
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08-09-2012, 12:09 PM
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Just replacig the Q-jet to a holley will not improve the performance. The motor can run very strong with a Q-jet carb. What you are lacking is compression, gears for the rear end, a good exhaust system, and a high stall converter, and if you do not have those four items. The motor will not pull any power. No matter what carb you are using or manifold. They all have to work together to get results.
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08-09-2012, 12:42 PM
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Quote:
My goal for the carb isn't more power, if and when we start trying to wring more power out of this engine, that will be a different discussion. For right now, I just want it to run good in it's current configuration. I have zero doubt that the Q-Jet can be made to run terrific. But it would appear that the intake on the car now is made for a square bore carb, not the spread bore. And since I read that adapters were bad, I thought I'd run it by you guys. I'm just trying to make it run well for the rest of our short season here. Come winter time, we can, and will be discussing all manner of power increases.  So my question was, (I know it was answered) if I want to bolt a carb straight to my Edlebrock Victor Jr. intake with no adapter, do I want a spread bore carb or a square bore carb?
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08-09-2012, 01:51 PM
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Then run a 600 Vacuum secondary Holley #1850, or Edlebrock 600 CFM carb.
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08-09-2012, 01:59 PM
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600 vacuum on a vic jr?
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08-09-2012, 02:55 PM
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To answer your question....a square bore and if you can find or borrow one until winter a 700 cfm #3310 Holley.....but there are many other Holleys to choose from, no double pumpers if you're not racing it.
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08-09-2012, 03:05 PM
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or,no vic jrs if you are not racing,,,
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08-09-2012, 10:20 PM
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Just out of curiosity, why a vacuum secondary over a mechanical one? Electric choke or manual?
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08-09-2012, 11:45 PM
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A vac. sec. carb is just much more gas mileage friendly, You can change the spring rate in the housing to either quicken or slow down the opening of the secondary's. A mechanical secondary carb uses non-adjustable secondary linkage and it's gas mileage is in direct correlation to your right foot.
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08-10-2012, 09:12 AM
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If its a street only viehicle id just go with a 1405 edelbrock. They are GREAT on the street, low cost, and dirt simple to tune.
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08-10-2012, 11:03 AM
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It is only a street vehicle. And always will be. The only type of racing I'm interested in take place on 2 wheels, and it's not drag racing. ;-)
That said, it will always be a street vehicle. Right now, it's a matter of straightening out drivability issues more than peak power. Come winter time, I could see me making some serious mods in the pursuit of power, maybe even a whole new engine and tranny, but still street power. I don't see many 1928 Nash's on the race tracks! Thanks for all the input gents!
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08-10-2012, 11:35 AM
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Quote:
Quadrajets are the best carb if you have too much time on your hands and want to spend it trying to tune a carb. They can work well, but it just seems like a lot of needless effort to me. They're are also a lot of great holley based carbs out there but they can get pricey. I've heard good things about the summit carbs but never used one myself.
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