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Thread: what size carb?

  1. #1

    what size carb?

    I have a 302 with about 350 - 400 horsepower. I am gonig to be daily drving this car and once in awhile down at the track. I was looking at getting a holley street avenger 670. What do you guys think?

  2. #2
    Senior Member DYNO OPERATOR
    Join Date
    Feb 2006
    VA Hospital, Dallas, Tx (214 302 1924) cell-972-464-7400
    650 to 750 vacuum secondary carb.

    " Let all things that hath breath, praise the Lord. Praise Ye the Lord" Psalms 150 vs 6.

  3. #3
    Senior Member RACING JUNKIE
    Join Date
    May 2006
    I had 650 double pumper on my stout 302 I had in a 63 falcon that was a screamer on and off the track.
    I would recommend a smaller carb like the 650 dp or the 670 vacuum secoundary, they will give you great throttle response which will come in handy at the track footbraking or running in a dot class for them killer reaction times, but a bigger carb like the 750 or the 770 wont be quite as responsive but will give you more top end hp. Charles

  4. #4
    Senior Member RACING JUNKIE lively's Avatar
    Join Date
    Nov 2004
    vacuum secondaries on the street!!!!-----you can change if you don't like it when you drag race it 8)

  5. #5
    I had a similar 302 in my mustang a long time ago and I used a 625 Demon and it worked great and never gave me any troubles at all.

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