What's your 350-400 CID carb size?
406 CI
770 holley street avenger
BEST CARB I HAVE EVER WORKED WITH!
not only did this carb work great, but it fixed half the problems i was having! good idle, shuts off when key is turned (i used to have to pull the coil to turn it off-----YEOWCH! #*@U$!!!!!) and its real easy to tune.
i would suggest the street avenger for anyone.
770 holley street avenger
BEST CARB I HAVE EVER WORKED WITH!
not only did this carb work great, but it fixed half the problems i was having! good idle, shuts off when key is turned (i used to have to pull the coil to turn it off-----YEOWCH! #*@U$!!!!!) and its real easy to tune.
i would suggest the street avenger for anyone.
406sbc, RPM intake, XE274 cam, ported 2.02 double humps, Holley 750 vac. sec. carb (O-3310), redlines around 5500rpms. In a '79 Trans Am, 2400 stall, 3.42 posi. Fresh motor, so no ET yet. I ran a Holley 600 for a little while, and it ran well but it didn't feed her enough at higher RPM's.
I've been running 800CFM QJets on just about everything for the last 17 years or so. It's like the Swiss Army Knife of carburetors- not much it can't do. I'll put my QJet up against ANY vacuum secondary carb on the market.
Caveat: you have to know what you're doing with it as far as tuning and setup. NONE of them come out of the box performing like a champ. I don't recommend them for the first-timer. You can get all screwed up pretty quick trying to tune them like they are a Holley.
Caveat: you have to know what you're doing with it as far as tuning and setup. NONE of them come out of the box performing like a champ. I don't recommend them for the first-timer. You can get all screwed up pretty quick trying to tune them like they are a Holley.
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RX Speed Works
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Oct 1, 2015 10:19 PM



If I hadn't wasted so much $ on this car, I would buy another carb, a 750 cfm Qjet, but I give up.
