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one more Holley 94 question

Discussion in 'The Hokey Ass Message Board' started by Feverish Flattie, Feb 22, 2010.

  1. Feverish Flattie
    Joined: May 24, 2009
    Posts: 34

    Feverish Flattie


    i just received 2 well rebuilt model 59 holley carbs from a pal's pal. After comparison, it looks like the rebuilder used modern power valves with a trick-looking sealing washer arrangement. the current valves are the 7.5 ones. I'd like to revalve these to 3.5 to run 2 X 2 on my flattie. quick specs:
    .125 over, isky max1 cam, offy heads, regular dual manifold. It's running nice nice since the move to AZ, but still has carbs (taiwanesia knock offs) i'm not happy with. I'm not racing, just driving, would like better fuel economy, and more consistant idle (should've read the board before i got the knock offs). I'm guessing 3.5 is Ok with setup i'm running. Has anyone had any experience with newer holley PVs installed with sealing washers...or should i get originals , or pro-reworked ones like some of the posts mention.
    Thanks in adavance
  2. 1952henry
    Joined: Jan 8, 2006
    Posts: 806


    I use the modern pvs in my rebuilds. I have to remove some material from the inside of the well to make room for the bigger spring retainer. For a gasket I use a viton quad-ring (square-shouldered o-rings) from McMaster Carr. Probably not the best solution for you as the o-rings only come in packages of 25. Ken CT from Fordbarn can set you up with "original" style pvs. I don't mean to step on toes from any Hamb venders.
  3. 29SX276
    Joined: Oct 19, 2003
    Posts: 469


    Get in contact with Dickster 27;he's the '94 guru;knows his stuff and will look after you right.
  4. I am using the newer PV's in my 94's. Like 1952henry said, you gotta remove a little material in the housing to make them work, but it's no big deal.

    As for sealing- I bought a bunch of 1/2" copper crush washers from SPENCER AIRCRAFT (253)848-9349 in Puyallup, WA. Part # MS35769-9. They work excellent. I bought (12) for $5.04 + shipping ($4.34) total: $9.38 to my door. If I remember correctly, there was no minimum purchase. I just bought extra for the future.

    I'm jetted w/ .51 jets in both carbs.

    My 94's are 8BA's. I am running an Edelbrock 2x2 Reg. I chose to go with 4.5 power valve in both carbs. They work fine for me. But my Flatty is relatively stock, internally. EAB heads (bumps the compression a bit) Mallory Uni-Lite distributor & dual exhaust.

    I plugged the vacuum ports with 3/8"- 24 bolts cut down to about 1/4".

    Hope this helps.


  5. Feverish Flattie
    Joined: May 24, 2009
    Posts: 34

    Feverish Flattie

    Thanks too ya'll...As for McMaster, they get a weekly order from me, quad rings go on the next one. Spencer aircraft will get a call soon! As always, hambers RULE!

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