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fords.....302 vs. 351 any easy way to tell them apart?

Discussion in 'The Hokey Ass Message Board' started by slider, Nov 4, 2003.

  1. slider
    Joined: Oct 9, 2002
    Posts: 29

    slider
    Member

    There's a place near by that crushes cars every month or so. I don't have much time to do numbers running so is there an easy way to tell whats a 302 and whats a 351?

    Thanks!
     
  2. Fat Hack
    Joined: Nov 30, 2002
    Posts: 7,709

    Fat Hack
    Member
    from Detroit

    If you mean a 351 Windsor from a 302, the intake manifold is wider due to a taller deck height. Aside from that, they look pretty much the same externally.

    I don't have the actual width measurements handy...but after you've been at it a while, you can look at one and know...but it's obvious when you see a 302 and a 351W side by side!

    (351C and 351M engines are WAY different from 302s)
     
  3. Pigiron
    Joined: Jan 21, 2002
    Posts: 309

    Pigiron
    Member

    Looking at the front of the block were the water pump attaches, if the water inlets are even with the head surface of the block it is a 302. If there is about an inch of space above the water inlet to the top of the block it is a 351.
     
  4. fordiac
    Joined: Nov 27, 2001
    Posts: 424

    fordiac
    Member
    from Medina, Oh

    count the number of intake manifold bolts.

    I think 302's have 12 and 351W have 16

    someone check me...
     
  5. briggs&strattonChev
    Joined: Feb 20, 2003
    Posts: 2,237

    briggs&strattonChev
    Member

    the way to tell is that the 351 has more horsepower.......kidding


    ive been told that 302s have water inlet neck bolts that are really hard to get at and the 351's are in an open area

    this probably didnt help, but im not a ford man...........Briggs
     
  6. Flat Ernie
    Joined: Jun 5, 2002
    Posts: 8,406

    Flat Ernie
    Tech Editor

    [ QUOTE ]
    count the number of intake manifold bolts.


    [/ QUOTE ]

    Not 100% reliable as in '77, the 351W got the same heads. So it works for early engines, but not the later ones...

    Best way is the waterpump inlet/outlet previously mentioned.

    However, if they're bone stock, don't underestimate the obvious - read the emission sticker on the valve cover!

    [​IMG]
     
  7. fordiac
    Joined: Nov 27, 2001
    Posts: 424

    fordiac
    Member
    from Medina, Oh

    i forgot.

    also there is a tag under the Coil mounting bracket that had displacement and years on right? its aluminum and about half inch wide, and two inches long.(the tag)

    sometimes they are really grungy, check it out
     
  8. tomslik
    Joined: Mar 3, 2001
    Posts: 2,161

    tomslik
    Member

    easiest way is look at the lower thermostat bolt.
    if you can get a socket on it, it's a 351W
     
  9. scarliner
    Joined: Sep 3, 2003
    Posts: 622

    scarliner
    Member
    from Macon Mo.

    The best way I found was as Hack said.The 351 winsdor has a wider intake manifold.The 302 will measure around 9 1/2" wide.The 351w will measure around 11 1/2".After you look at enough of them its really pretty easy to tell.
     
  10. jonizzle
    Joined: Oct 22, 2003
    Posts: 99

    jonizzle
    Member

    doesn't it also say the cubes on the top of the head if you take the valvecovers off? i don't recall entirely but i think my 289 heads said 289 on it. but that aluminum tag is attached via a manifold bolt and it does say engine size. that is if the engine still has it.
     
  11. fordiac
    Joined: Nov 27, 2001
    Posts: 424

    fordiac
    Member
    from Medina, Oh

    later engines had both 302 and 351 written on them heads...
     

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