HOLLEY, QFT 650 HP DOUBLE PUMPER, ALL ALUMINUM, STREET, STRIP, BLACK BILLET BASE

  Here we have an all BRAND NEW HP style, Holley/QFT 650 squarebore (4150), 4 barrel, double pumper (mechanical secondary) carburetor professionally set up for street and strip use. This is one of my custom builds consisting of a Holley aluminum, contoured, HP style main body for maximum flow and enhanced booster signal. It will flow 650 cfm and is dyno-proven to 400 horsepower depending upon engine setup.. This is NOT the cheap Chinese knock-off junk sold under the brand name “Pro Comp”. These parts are machined in Bowling Green, Kentucky and are first quality. 

  Please call the number below with any questions or concerns regarding your application, and available options and pricing. I can set this carburetor up to work best with your combo. I usually have two or more in stock, just email or call 7 24, 523, two 947 for availability.

      It has been assembled with high-flow .110″ needle & seat assemblies, 30cc pumps, #28 squirters with pink #330 racing pump cams, non-stick bowl and block gaskets, nylon bowl screw gaskets, and vent baffle. The jetting is 68 up front with a 5.5″ Hg high-flow power valve, and 75 in the rear with the power valve circuit blocked. The mounting gaskets are included as shown.  

   Here’s a list of features;

   Holley polished lightweight aluminum HP main body with screw-in air bleeds. .070″ idle and .030″ high speed bleeds installed.

    Cast aluminum metering blocks that are custom calibrated for maximum performance.

   4 corner idle for fine tuning your idle circuit.

    Heavy duty black anodized billet aluminum baseplate that is much stronger than a stock Holley piece. 

    Teflon coated slabbed (flat instead of half-moon in shape) throttle shafts, stainless steel throttle blades, and loctited button-head screws for increased flow due to decreased turbulence.

    Lightweight aluminum racing style Holley fuel bowls with sight windows that will not yellow. No more fumbling with sight plugs!

    Aluminum inlet fittings. Uses a standard Holley model 4150, inverted flare fuel line with 5/8″-18 flare nut.

   This carburetor weighs about 7 lbs., while a typical cast zinc carb weighs in at 11 to 13 lbs.

   Please email or call me at my shop with any questions, as I will be glad to help you with your setup. I can be reached at (7 24, 5 two3, 2 nine 47) from 9 am ’til 7 pm, eastern standard time for tech or service help. 

    I welcome all potential bidders to check my feedback. My feedback from carburetor and parts sales is 100%, and I’ve sold hundreds in the past few years. I am the owner/operator of a one-man shop and my carbs are built with pride one at a time. Please see my other auctions for more great deals.

      Thanks, Steve