Anybody know about 60's and 70's Pontiac engines?

Discussion in 'OT Driven' started by bugginout, Sep 20, 2005.

  1. bugginout

    bugginout New Member

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    I just got a early 70's Lemans with a Pontiac 350 in it. Anybody know if I can make decent power out of this or would I need to step up in displacement? If so, what is the best way to go about it? Any suggestions will be greatly appriciated.
     
  2. Dragnfyre23

    Dragnfyre23 New Member

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    I have a 69 Firebird with 350, I heard the 400's were underrated monsters though
     
  3. opie and anthony 102.7

    opie and anthony 102.7 your mom's box

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    if your going to go with a new motor build or buy a 455. all pontiac motors look the same, you really cant tell a 455 from a 389 from a 421 just by looking. my friend has a 428 built by jim taylor in his 66 gto. his dad has a 455 being built by jim taylor for his 63 lemans street/strip car. good luck with the header bolts, pontiac heads suck for headers because the exhaust ports angle down toward the ground. a pontiac will never sound as good as a small block chevy with a cam, but they can sound pretty decent if built right.

    [​IMG]
     
  4. diaper eater

    diaper eater OT Supporter

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    ive got a 400 in our 74 grand am, emissions shit rapes the hell out of the potential. i dont know anything mroe than that though.
     
  5. butthair

    butthair New Member

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    the best power making motor would be the 455, I have a buick with a 455 in it, same thing, but the buick has better heads and makes a little more power. They make around 370 HP stock and 510 Ft./lbs of torque.
     
  6. Ivy Mike

    Ivy Mike New Member

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    The 400's had incredible potential and would have been awesome motors had they not come out when they did.

    Emissions stuff just kills em.
     

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