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Thread: 503 Stage1

  1. #1
    Join Date
    Jan 2003
    Location
    darien Illinois
    Posts
    514

    Default 503 Stage1

    http://www.trishieldperformance.com/503ci-stage-1.html

    Jim,

    I was interested in the bore/stroke combination of the 503?
    Is this combo for a standard block or a new TA block?

    Thanks, Allen

  2. #2
    Join Date
    Feb 2002
    Location
    Pine City, MN
    Posts
    9,658

    Default Re: 503 Stage1

    TA Block

    4.5x3.95 My 470 rotating assembly with bigger dia pistons, in a TA block, is what it is.
    They have a limited number of TA blocks with Buick crank/cam sizing.

    The 503 if for folks who just have to have the look of the Alum block, but don't need the high buck crank and rods that make a 555 shortblock cost $15K.

    JW
    Owner/operator

    Tri-Shield Performance
    Jim Weise
    Founder/Owner
    V-8 Buick.com
    320-629-8999

    Most folks are about as happy as they make up their minds to be.
    Abraham Lincoln
    16th president of US (1809 - 1865)

  3. #3
    Join Date
    Jan 2003
    Location
    darien Illinois
    Posts
    514

    Default Re: 503 Stage1

    What would the approximate maximum safe HP and RPM limits for a stock crank in a new stout block?

  4. #4
    Join Date
    Feb 2002
    Location
    Pine City, MN
    Posts
    9,658

    Default Re: 503 Stage1

    With a good balance job, I would have no problem with 900+ HP and 6500-7000 rpm intermittently.

    Light components of course would be the best here.

    The crank was never the issue.
    Owner/operator

    Tri-Shield Performance
    Jim Weise
    Founder/Owner
    V-8 Buick.com
    320-629-8999

    Most folks are about as happy as they make up their minds to be.
    Abraham Lincoln
    16th president of US (1809 - 1865)

 

 

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