Register now to get rid of these ads!

Technical Poly engine ID

Discussion in 'The Hokey Ass Message Board' started by Thommyknocker, May 2, 2015.

  1. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,521

    Rusty O'Toole
    Member

    If you want to be realistic--- 301 cu in and 188HP from a 700 pound + engine sucks. You could do better, and cheaper, with a 318, 302 or 305.

    But if you want a cool engine for an old style hot rod, you have one.

    As often happens with obscure fifties engines, with little or no speed equipment available, I wonder if a Paxton supercharger would be the answer to more HP ?

    You could use any kind of supercharger you want, and the engine will stand the gaffe. They used the same block, crankshaft and rods in blown fuel dragsters in the fifties.
     
  2. 35desoto
    Joined: Oct 6, 2009
    Posts: 765

    35desoto
    Member

    A poly 301 can be upgraded to numerous ci's by understanding the crankshaft being used and increasing the bore . The 301 block is the same as the 318 block - it's just a different bore/stroke . Do your homework and you will find a very good torque engine that can rev relatively well too. And a 302 or a 305 can't produce the same torque as one of these engines without some form of rework either
     
  3. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,521

    Rusty O'Toole
    Member

    There were 2 301 polys, one Chrysler based and one Plymouth based. The one in the pics is a Chrysler. It used the same block, crank, etc as a 331 hemi.
     
  4. Martino
    Joined: Nov 26, 2010
    Posts: 245

    Martino
    Member

  5. Martino
    Joined: Nov 26, 2010
    Posts: 245

    Martino
    Member

  6. I edited my original post, to push the blame on you guys

    My son and I pulled another Polysphere out of our local junk yard.

    It's a 56 poly out of a Windsor, stamped WE56 so this one is a 331.

    I've started soaking the pistons, only time, and a machine shop will tell if this new one is rebuildable.

    Worse case I have a bunch of spair parts IMG_20190427_154635_357.jpeg IMG_20190428_130535173.jpeg IMG_20190428_130546154.jpeg

    Full Kustom drunk mobile posting
     
  7. Funny thing, I just saw a like notification and I just got the piston free

    It took a month of soaking with white vinegar, some hand sanding and a BFH


    free piston.jpg
     
    AndersF likes this.

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.