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  1. #1
    casual poster 68 hk's Avatar
    Join Date
    Jun 2010

    Default Should I go for a 390 or 465 Holley

    Hi all
    Been reading a few opinions on whats the best Holley dor a warm 186.
    Currently I have 350 holley on and I'm thinking of changing to a 4 brl.
    My question is will I see a difference going to the 4 over the 2, engine has 35/70 cam with 161 hc head with abit of throat work and has a powerglide behind it running in a hk.


  2. #2
    been here .......too long Smitty2's Avatar
    Join Date
    Mar 2007
    bayside Melbourne


    best Holley for a warm 186.?

    ... none (and I have tried most combos 350 500 465 600 etc)

    a small sidedraft weber or dellorto gives more power (and economy)
    3 sidedraft SUs or CDs will be better

    I even got better hp on the old X2 2 downdraft Strommies than a Holley
    on old hot 186s I had in the past

    The problem is air/fuel distribution.... its so uneven with a large central carb
    the red motor just don't make lots of power.

    the age old proven XU1 style setup will be the go in my opinion
    Never late in an AussieV8!
    Club circuit racing...the best fun you can have with your pants on

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