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Mild 427 bbc. Pump gas daily driver type automatic. I originally planned on a 3310 but what about the 770cfm street avenger? Or the Quick fuel carbs?
vacuum secondary carb recomendation?
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The 3310 and the 770 Street Avengers are virtually almost identical.
Except the Street Avengers have all the goodies you want to add to your stock 3310.
It has the rear metering block for rear jet adjustability, the quick change kit for changing the vacuum secondary spring, and an electric choke if ordered, they also come with a manual choke.
Dave
Except the Street Avengers have all the goodies you want to add to your stock 3310.
It has the rear metering block for rear jet adjustability, the quick change kit for changing the vacuum secondary spring, and an electric choke if ordered, they also come with a manual choke.
Dave
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I'd look around for a 3310-1 in very good shape. It's an older carb but they can be found in excellent shape if you look around.
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[cough]quadrajet[/cough]
I put a Quick Fuel 750-VS on mine not long ago and couldn't be happier.
It has adjustable everythings, which confused me a little at first, lol.
Air bleeds, replaceable jets in the secondaries, electric choke, screwdriver adjustable secondary opening rate, re-useable gaskets, etc...
I had a 750 DP and while it always seemed to respond well, and run good...the QFT works much better and seems to run even better than it did. Throttle response isn't even comparable, as it's much better now. As a bonus, the gas mileage definitely went up. How much? I don't know since my odometer works only sometimes, but I can definitely tell I am not at the gas station as much, lol.
I bought the cheaper "Slayer" series, which still looks good and has all the QFT upgrades, but is only $300 brand new, anywhere...:thumbsup:
It has adjustable everythings, which confused me a little at first, lol.
Air bleeds, replaceable jets in the secondaries, electric choke, screwdriver adjustable secondary opening rate, re-useable gaskets, etc...
I had a 750 DP and while it always seemed to respond well, and run good...the QFT works much better and seems to run even better than it did. Throttle response isn't even comparable, as it's much better now. As a bonus, the gas mileage definitely went up. How much? I don't know since my odometer works only sometimes, but I can definitely tell I am not at the gas station as much, lol.
I bought the cheaper "Slayer" series, which still looks good and has all the QFT upgrades, but is only $300 brand new, anywhere...:thumbsup:
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Thanks Dave. Didnt really know what was different but your right, all stuff id do to a 3310.
would consider it but I'd have to change intakes which I really dont want to do.
Thanks, I will check them out.
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2,123 Posts
The Q-jet is a fine carb, especially when properly set up. Plenty of carb for a mild 427, and you might even get better than 9 miles to a gallon.
The problem with the q-jet is siimple. The darned things are so forgiving they will start and run even when terribly messed up by idiot-boy carb tuner.
Here's the typical scenario. Some idiot screws up the poor Q-jet with all kinds of "hot Rod" modifications that don't work, like removing the vacuum pull-off and misadjusting the secondary air valve, etc. He does this, insisting this is THE "hot mod" de jour. After all, he just read about it in Hot Craft Kar Kustums Magerzeen!
Now the fact is that his butchery is uniformly inferior to correct tuning of a stock setup...but no one has empirical data to prove it. Why? Because all this so-called performance tuning is done by the seat-of-the-pants method. No real data = no measurable results.
So the victim of this travesty finally gives up on that "bad" Q-jet, saves his nickels and buys a brand-new off-the-shelf Holley (or whatever). Of course, he's afraid to mess with it because he just paid 400+ bucks for it… So, he bolts it on - bone stock - carefully keeping idiot boy carb master away from his expensive new toy. Well, (no) surprise! The car runs at least decent. (Holleys are fine carbs...no surprise expected.)
Next thing you know, he's claiming how much better Holley carbs are, and how "bad" those crummy old Quadrajet are. The only positive in this sad tale is that some smart guy picks up the discarded "bad" Q-jet for 20 bucks at the swap meet.
I have watched his kind of "jethro-enjunearing" give the q-jet a false bad rap for three decades... and the beat goes on.
The problem with the q-jet is siimple. The darned things are so forgiving they will start and run even when terribly messed up by idiot-boy carb tuner.
Here's the typical scenario. Some idiot screws up the poor Q-jet with all kinds of "hot Rod" modifications that don't work, like removing the vacuum pull-off and misadjusting the secondary air valve, etc. He does this, insisting this is THE "hot mod" de jour. After all, he just read about it in Hot Craft Kar Kustums Magerzeen!
Now the fact is that his butchery is uniformly inferior to correct tuning of a stock setup...but no one has empirical data to prove it. Why? Because all this so-called performance tuning is done by the seat-of-the-pants method. No real data = no measurable results.
So the victim of this travesty finally gives up on that "bad" Q-jet, saves his nickels and buys a brand-new off-the-shelf Holley (or whatever). Of course, he's afraid to mess with it because he just paid 400+ bucks for it… So, he bolts it on - bone stock - carefully keeping idiot boy carb master away from his expensive new toy. Well, (no) surprise! The car runs at least decent. (Holleys are fine carbs...no surprise expected.)
Next thing you know, he's claiming how much better Holley carbs are, and how "bad" those crummy old Quadrajet are. The only positive in this sad tale is that some smart guy picks up the discarded "bad" Q-jet for 20 bucks at the swap meet.
I have watched his kind of "jethro-enjunearing" give the q-jet a false bad rap for three decades... and the beat goes on.
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7,878 Posts
nobody said it was a terrible carb. Im just not going to change intake manifolds to run it and cant/wont run a adapater. a Holley VS carb is what Im going to run because its the most direct bolt on unit. And if I were to run a q-jet, I would get one from one of the carb shops thats fresh/new.
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2,123 Posts
Yes, that makes perfect sense. Sorry, it wasn't clear to me from your OP that the manifold was already in the bag.
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7,878 Posts
currently running a performer rpm and a 750 DP.
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not a fan of edelbrock carbs. I will be using a Holley, just not sure which version but Im leaning towards the 770cfm street avenger,
Keep leaning that way. I bought mine barely used for $150 off escam directly to my door. And I didnt need a 250 page dissertation on tuning it.
Yep, each to his own. In my opinion there is no carb on the market today as easily tuned as the Edelbrocks. The book that comes with them is an excellent guide to carb function and tuning.
I have two 750 performers with electric chokes and both work real well and produce nice gas mileage and good performance for the street.
For the street/strip crowd, I think they are hard to beat.
I have a holley Dominator on my race car which I think works best for that application.
I also have two 600 holleys on a friends blower motor that work well.
So I guess buy what you think will do you the best job for your application.
BTW, I think the Quadrajets are very good for street strip also, just not as easily tuned as the Edelbrocks.
Good luck with your carb purchase, certainly nothing wrong with a Holley.
770SA. buy a new one, not used or rebuilt. put it on, run it. Don't screw with it unless an issue develops. Usually they don't. Most Holley carb issues are caused their owners screwing around with them.
Where's the fun in that?
NEW is always fun.
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