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Hot Rods Potvin 3/8 or 400jr

Discussion in 'The Hokey Ass Message Board' started by 55styleliner, Aug 18, 2020.

  1. 55styleliner
    Joined: May 11, 2015
    Posts: 558

    55styleliner
    Member

    I know it’s been asked a million times, but it all comes down to the specific application right? So here is my engine:
    286” 8BA 3-5/16 x 4-1/8
    1.6” intake and exhaust valves
    Offenhauser .400 heads
    Offenhauser std dual
    New Big 97s (250cfm ea)
    Mallory Unilite and MSD coil.
    Currently has a 1007B that was degreed in.
    Lots of material removed from the valve bowls and tops of lifters. Ports blended and cleaned up

    I’ve run 8000 miles on this engine in a full fendered AV8. It pulls hard from idle until 3500 and then gets lazy. I have a Potvin 3/8 cam and have been told a 400jr would be the best choice. I want more mid range and top end, which do you think would be better?
    FC6D374D-0A96-44CD-87F6-F825D3B40C47.jpeg
     
    irishsteve likes this.
  2. 55styleliner
    Joined: May 11, 2015
    Posts: 558

    55styleliner
    Member

  3. Perfect engine for a KiWi-L100.
    Enjoy your awesome engine.
    Cheers
    Tony
     
    55styleliner and waxhead like this.

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