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  •  » I put a new carb on my 427 today

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    8/29/2024 7:19 PM  #1

    MS
    Forum Originator

    Offline

    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 12,171

    I put a new carb on my 427 today

    Swapped out a 750 Holley for a 670 Holley, aluminum with four corner idle.  Holy crap!!!  Drivability improved 100%!!!  I am impressed with this carb. I put a 7.5 power valve, 68 primaries and 76 secondary jets.  Left the stock squirter.
    This thing drives great, and might just help with gas mileage. 

    I was looking forward to burning regular gas in the 69 on the bash trip but will just have to “pony up” for premium. The 66 is being readied for the trip as of today.  Plan will put 3,600 miles on it.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    9/03/2024 6:00 PM  #2

    Steve69
    Senior 24-7 FYI Addict

    Offline

    From: Madison Wisconsin
    Registered: 4/01/2013
    Posts: 2,727

    Re: I put a new carb on my 427 today

    My son bought a Holley 4150 double pumper with the 4 idle adjustment screws.  It was remanufactured from Holley.  It’s on his 351.  Once we timed it and adjusted the idle screws by vacuum it’s worked great.  He’s been really happy with it.

     

     

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