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Hot Rods Chain driven blower on a flathead?

Discussion in 'The Hokey Ass Message Board' started by HOTRODPRIMER, Mar 30, 2018.

  1. kustomdeluxe
    Joined: Sep 28, 2017
    Posts: 50

    kustomdeluxe
    Member

    Do you or can you find more info about this picture. Was it on a persons page? I need info on that intake manifold. I’ve got a 3-71 blower going on a 8BA and have been searching for an intake suitable.
    Thanks!!
     
  2. Fordors
    Joined: Sep 22, 2016
    Posts: 2,469

    Fordors
    Member

    That looks like a 4 bbl. manifold that was milled flat and most likely the plenum was opened up, then a 1/2" thick plate was bolted on to support the blower. Your 3-71 has only one outlet and it would work well with a modified 4 bbl. manifold, and if you consider going this route put the blower on top of the engine centered where it would be mounted and see if an off the shelf snout might be out there that would work. When you are measuring the length of the blower snout, keep in mind you will probably need to drive the water pumps with a separate belt.
    What are you considering for a drive system, Gilmer belt or v-belts? Take a look at this website for some ideas-
    http://uncommonengineering.com/
     
  3. Anyone ever hear of a Ford 427 cammer, what made the cams go around? Many other engine timing chains are double row chain, the trick is proper tension and lube.
    The advantage of a belt is the tiny bit of "give" in the rubber teeth that absorbs the power pulses.
     
  4. Deuces
    Joined: Nov 3, 2009
    Posts: 18,185

    Deuces
    Member
    from Michigan

    31Facebook.jpg 76951_1471326026160_1323908769_1076923_8092753_n.jpg
    There's always a gear drive setup for the Ford SOHC 427 motor.....
    What a freakin' nightmare!!!!:confused::rolleyes:
     
  5. nunattax
    Joined: Jan 10, 2011
    Posts: 1,987

    nunattax
    Member

    my thoughts exactly
     
  6. nunattax
    Joined: Jan 10, 2011
    Posts: 1,987

    nunattax
    Member

  7. Deuces
    Joined: Nov 3, 2009
    Posts: 18,185

    Deuces
    Member
    from Michigan

    That too!!!..... :eek::rolleyes:
    Kinda like a Pete Jackson gear drive only worse....
     
  8. khead47
    Joined: Mar 29, 2010
    Posts: 1,578

    khead47
    Member

    Wasn't there an aero engine powered land speed car that had a chain drive that decapitated the driver when it threw the chain ? About a hunnert years ago.
     
  9. kustomdeluxe
    Joined: Sep 28, 2017
    Posts: 50

    kustomdeluxe
    Member

    3B369F9C-8CA2-4CDD-9167-20618065640E.jpeg
     
  10. Gasoline Junkie
    Joined: Nov 20, 2010
    Posts: 308

    Gasoline Junkie
    Member

    I know chains were phased out early on, but can't help but wonder why. If you think about it, timing chains are better than belts right? I know belt slip on a blower is a major issue and I feel like a chain would be ideal. If you enclosed it and it was oiled and had a tensioner on it.
     
  11. Gotgas
    Joined: Jul 22, 2004
    Posts: 6,776

    Gotgas
    Member
    from DFW USA

    Because engines have high rpm misfires and backfires that radically affect engine speed. A roots blower has a lot of inertia of its own, so many times the link between the blower and the engine it's on serves as a 'fuse' of sorts. A rubber belt will deal with minor hiccups better, or when things go really wrong and the belt gets thrown, a belt has much less inertia than a chain does - resulting in less damage to the engine and anything surrounding it.
     

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