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Thread: Confused...1 piece rear main seal or 2 piece
          
   
   

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  1. 01-10-2012 01:50 AM #1
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    SutyakUSMC
    SutyakUSMC is offline CHR Member
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    Question Confused...1 piece rear main seal or 2 piece

     



    I have a 383 stroker. I am on deployment in A-stan right now and am just trying to figure out if i have a 1 piece rear main seal or 2 piece.

    How do i figure out what i have ?? i belive i have a late (1985+) block but am not sure. all i have to go off right now is some pics on facebook i have. I have not seen my car about 7 months...but i will be home soon to start working on her again!

    Facebook photo link
    383 Stroke build | Facebook
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  3. 01-10-2012 01:57 AM #2
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    By Looking at the Lifter valley I would say that's a pre-1987 2-Piece seal block .
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  4. 01-10-2012 02:01 AM #3
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    Here is a 2-piece block .

    http://oi53.tinypic.com/nd90k9.jpg
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  5. 01-10-2012 02:12 AM #4
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    Thank you
    Wisdom is acquired by experience, not just by age<<<<<<< I like thak
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  6. 01-10-2012 03:42 AM #5
    BlownCenturion
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    One piece oil seal looks like this..yours has the two piece seal.

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  7. 01-12-2012 01:40 AM #6
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    1 pc or 2 pc RMS

     



    Looks like a 2pc going by counterweight on crank. My 1pc RMS flange is circular and does not have a counterweight. Flywheels / flexplates won't interchange between either engine. Casting number will easily ID the block. Also it is internally or externally balanced. Plus the dipstick is on the LH side, not RH side
    Last edited by mgtstumpy; 01-12-2012 at 02:02 AM.
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