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Technical SBF 302 Cooling problem

Discussion in 'The Hokey Ass Message Board' started by NAFLASH, Feb 9, 2026 at 9:12 PM.

  1. Charlietruck62
    Joined: Apr 2, 2019
    Posts: 63

    Charlietruck62

    had a similar experience with 65 Mustang 289 all rebuilt with new Champion 3 row radiator. Ran fine down the road but in town would heat stoplight to stoplight. Tried high volume water pump, five blade fan a shroud, made it better but still a problem. Finally pulled my head out of my **** and tested the radiator cap. It let go at 5 lbs. New radiator cap 13 lb, end of problems. check that cap before you waste any more time or money.
     
  2. lostone
    Joined: Oct 13, 2013
    Posts: 3,662

    lostone
    Member
    from kansas

    I vote stock fan off of a a/c car (a/c usually have a bigger diameter fan) and as also stated get the fan blades out of the shroud...

    ...
     
  3. MAD MIKE
    Joined: Aug 1, 2009
    Posts: 967

    MAD MIKE
    Member
    from 94577

    Those plastic flex fans are ****.
    The blades don't flatten out they twist at the root and cause m***ive drag.
    It's probably why they explode.

    I'll concur that the fan appears to be over shrouded.

    A Windsor in the early Falcons was tight as it is. The more horsepower, the more heat.

    Quick trick would be to wedge the back of the hood open with spacers. See if the temp gauge stays steady at slow speeds. If so, it's a low speed air flow issue. Hot air can't get out and the engine bay is heat soaking.

    Is there an air dam under the rad support? This would promote a low pressure are behind the rad and under the car to help pull hot air down and out from the engine bay.
     
    dana barlow likes this.

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