Holley 3 barrel still has secondary boosters, at least I think the carb I had in my hand a couple months ago did..Memory getting short or too much other stuff on my mind, I'm hoping for the latter..Hasn't some one come out with a similar 3 barrel type in the last year or so?
I like them all...the AFB carbs seem to be a little more trouble free...BUT...if you have any sort of hot motor...you need a double pumper in my experience...and only Holley makes those. I had a '68 Corvette once that had a spread bore double pumper Holley on a stock intake. Car was originally a 435 horse setup so it had stiff gears...that spread bore ran great when you stomped on the pedal. Changed it back to a quadrajet..felt like I lost 50-75 ft lbs of torque down low...with the Holley it would roast the tires at low speeds if you nailed it....with the QJ? Nothing.
Seb....Holley 3 barrels are vacuum secondary....they have the huge diaphragm like the '67-'69 Corvette 3x2 setups do... Also...I dig the QJ howl....means the secondaries are working...
No bad..Can you explain "tubes" or a pic? I looked in my old catalogs but not old enough for 3 barrels..
Here it is....the 950 cfm version has normal looking secondary boosters...the 1030 gorilla has these...
Yeah I guess there are tubes!! Gees like flushing a toilet at WOT! Thanks for pic and posting, learned something new [or old!]
correct. And guys ARE getting confused. The superior Q-jet part throttle fuel metering characteristics that everybody loves to talk about (me included) are all on the primary side. Once you go WOT, the Q-jet loses its inherent part throttle edge over non-annular holleys.
Falcongeorge...I believe a big part of the QJs drive ability and part throttle crispness is due to the tiny by comparison primary throttle blades...
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