Register now to get rid of these ads!

Technical How high does your sbc sit in model a frame

Discussion in 'Traditional Hot Rods' started by peter schmidt, Oct 6, 2016.

  1. peter schmidt
    Joined: Aug 26, 2007
    Posts: 657

    peter schmidt
    Member
    from maryland

    Im trying to mock up engine mounts to mount my 57 283 in my model a frame it seems like its sitting to high. Was wondering how high you all had yours set. A measurement from the top of the frame rail to the center of the front manifold bolt would be great. The way i have it set now the fan seems like its to low on the radiator but i want it as forward as possible and i think it would look better lower. I definitely want to run a stock fan and not use a waterpump riser im trying to make it as traditional as possible. [​IMG]
    [​IMG]
    These pics are with a 17 inch fan a little over an inch clearance until it hits the crossmember. It still looks to high to me though.
     
  2. Firecat7
    Joined: Dec 11, 2011
    Posts: 254

    Firecat7
    Member

    that's the problem.... any lower...you need electric fan. You can use smaller diameter (sacrifice cooling)... doesn't look that bad from here.
     
  3. F&J
    Joined: Apr 5, 2007
    Posts: 13,222

    F&J
    Member

    Pics are sometimes deceiving....

    from here, the back is way too high. If it is, then dropping the back will lift the fan up a bit.

    so, if the fan did come up with a certain new angle, then lower the entire motor but keep the same degrees, until the fan barely clears at the crossmember.


    We don't know what your angle needs to be, or can be, as it will be different with ford closed drive, compared to open drive which gives more options.

    Also be thinking about floor space for pedals and column problems when mocking the motor

    .
     
  4. 1930 A
    Joined: Apr 8, 2006
    Posts: 131

    1930 A
    Member

    Just measured mine. It's about 6 3/4 inches. I do run an electric fan.
     

  5. sunbeam
    Joined: Oct 22, 2010
    Posts: 5,137

    sunbeam
    Member

    From looking at the pictures can you get a belt between the crank pulley and the cross member?
     
  6. trollst
    Joined: Jan 27, 2012
    Posts: 1,956

    trollst
    ALLIANCE MEMBER

    I center the fan in the rad, that way I get maximum from a stock fan.
     
    scrap metal 48 likes this.
  7. borderboy1971
    Joined: Oct 20, 2008
    Posts: 743

    borderboy1971
    Member
    from Canada

    Here's mine. My fan is only about 14" diameter and on hot days at parade speed or less it will overheat.
     

    Attached Files:

  8. borderboy1971
    Joined: Oct 20, 2008
    Posts: 743

    borderboy1971
    Member
    from Canada

    Not sure why, but I can only add one picture that time.
     

    Attached Files:

    AmishMike likes this.
  9. Your oilpan flange & the front crank hub should be about even with the tops of the frame rails.

    As with everything in life, it's a compromise: Too high and you take away interior space. Too low and you can't use a mechanical fan.
     
    Tim, mad mikey and Dino 64 like this.
  10. Dino 64
    Joined: Jul 13, 2012
    Posts: 1,946

    Dino 64
    Member
    from Virginia

    I thought the tops of the frame rails should bisect the crank hub.
    On this coupe the distance from the top of the rail to the engine mount is 5", with no electric fan.[​IMG]
    It's a SBC crate. If that helps


    Sent from my iPhone using The H.A.M.B. mobile app
     
    Just Gary likes this.
  11. thirtytwo
    Joined: Dec 19, 2003
    Posts: 2,640

    thirtytwo
    Member

    Don't forget you want the oil pan to clear speed bumps ect. Also
     
    HemiDeuce likes this.
  12. peter schmidt
    Joined: Aug 26, 2007
    Posts: 657

    peter schmidt
    Member
    from maryland

    Thanks guys. The engine is just haning off the cherry picker in the pics. I finished making most of the front hurst style mount im going to try to keep the mechanical fuel pump so it bends forward there to clear it. Its a 57 283 so is has no side mounts but the pics and info will help me get in the ballpark. I wanted the motor as low as possible with a mechanical fan because the body i have is an old hot rod body that had a really heavy channel and i didnt want the motor sticking up real high in the bay. Im sure ill have to butcher the firewall to get it in but ill have to wait to see how much until i can move some things around in my tiny garage.
     
  13. AmishMike
    Joined: Mar 27, 2014
    Posts: 514

    AmishMike
    Member

    Your in Canada with white water & overheats at slow speed. Try a radiator. Had to comment; just struck me as funny - sorry - must be time for bed.
     
  14. borderboy1971
    Joined: Oct 20, 2008
    Posts: 743

    borderboy1971
    Member
    from Canada

    We just got our first bit of white water today (in the pictures) and -1 Celsius today. That'd be around 30f.
    Actually we were lucky where I live because 200 miles west of here got 15" of white water yesterday
     
  15. 301 in my RPU. The pan rail is pretty much level with the top of the frame. JW
    [​IMG]
     
    Last edited: Oct 7, 2016
    wedjim, Just Gary and mad mikey like this.
  16. Mine sits a little lower than some, but uses a raised water pump to get the fan in a good location. The higher the motor sits, the more problems with a raised floorboard giving you difficulties with the throttle pedal position.

    [​IMG]
     
    wedjim, Just Gary and mad mikey like this.
  17. Looks like most of us are putting the oil pan rail near the top of the frame rail.
     
    wedjim and Just Gary like this.
  18. harley rider
    Joined: Aug 11, 2010
    Posts: 527

    harley rider
    Member

    Attached Files:

    Last edited: Oct 7, 2016
    baspinall and wedjim like this.
  19. The SnoWhite pump housing is what I used to raise the fan. I like "go fast" fins!
    [​IMG]
     
    Hombre, baspinall and wedjim like this.
  20. Sure doesn't look like it's overheating in that picture! :D
     
    Hombre likes this.
  21. krylon32
    Joined: Jan 29, 2006
    Posts: 7,083

    krylon32
    Alliance Vendor
    from Nebraska

    I use Pete & Jakes SBC to Model A mounts in all A chassis I build. No complaints to date.
     
    Just Gary likes this.
  22. perk30
    Joined: Jun 22, 2009
    Posts: 321

    perk30
    Member

    image.jpeg Here's a pic of mine. I use a water pump riser to center the fan in the center of the radiator. Have plenty of pan clearance as mounted.
     
  23. Blues4U
    Joined: Oct 1, 2015
    Posts: 5,284

    Blues4U
    Member
    from So Cal

    Here's how mine sits. Fan blades are rounded off to clear. 20161007_160147.jpg
    About 10.5" from top of frame rail to front exh manifold bolt.
    20161007_160130.jpg
     
    pecker head and mad mikey like this.
  24. bchctybob
    Joined: Sep 18, 2011
    Posts: 2,848

    bchctybob
    ALLIANCE MEMBER

    When I did the mounts on my Model A Tudor I installed the stock Chevy 4 bladed fan on the short water pump, rotated a blade to it's lowest point and positioned the front of the engine so the fan blade was close to the radiator and even with the bottom of the radiator core (top of the bottom tank). It looked right and although mine wasn't channeled, my car had virtually no trans hump. (Chevy 3 spd trans)
    Most of the commonly available motor mount kits set the engine too low in the chassis for a traditional look. In the past, folks used the Hurst cradle with those horseshoe spacers and Ford type biscuits.
     
  25. Hot Rod 50
    Joined: Jul 30, 2007
    Posts: 498

    Hot Rod 50
    Member

    I used rotten Leonard's front SBC mount. I think it put it at the perfect hight.
    [​IMG]

    [​IMG]


    Sent from my iPad using The H.A.M.B. mobile app
     
    Last edited: Oct 8, 2016
    mad mikey likes this.
  26. Hot Rod 50
    Joined: Jul 30, 2007
    Posts: 498

    Hot Rod 50
    Member

    mad mikey likes this.
  27. Rand Man
    Joined: Aug 23, 2004
    Posts: 3,588

    Rand Man
    Member

    That looks like it sits about the same as my Hurst-mounted 327.


    Sent from my iPhone using The H.A.M.B. mobile app
     
    -Brent- likes this.
  28. mike bowling
    Joined: Jan 1, 2013
    Posts: 3,556

    mike bowling
    Member

    Good info.
    I'm doing a '31 A coupe right now
    that's going to have a 327 in it ( Hurst style mount)
     
  29. Devin
    Joined: Dec 28, 2004
    Posts: 2,352

    Devin
    Member
    from Napa, CA

    Mine sits about like yours. I have not had any issues with cooling at all. I am using an aluminum radiator that has been painted black. I like the lower center of gravity. My roadster is channeled and the radiator shell is chopped so it doesn't look out of proportion. The only concern I have is that my oil pan is only about 1/2" above the scrub line. Hopefully these pics show the proportion and relationships between the radiator, fan, engine and rails. They are what I have on my phone.


    Sent from my iPhone using The H.A.M.B. mobile app[​IMG][​IMG]
     
    Last edited: Oct 9, 2016

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.