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What size are my heads??

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Brian 89KBlazer, Apr 24, 2000.

  1. Brian 89KBlazer

    Brian 89KBlazer 1/2 ton status

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    I don't know where to look so I wonder if anyone here knows what cc rating my stock 1989 350 TBI heads are. Are they 68cc, 72cc, 76cc?

    I need 76cc or at least 72cc combustion chambers to keep the compression level down so if the heads are not that size, is there enough meat there to port them a little to get the extra cc's?

    Thanks
    Brian
    Still in search of the TBI KING!!
     
  2. EDdaTREE

    EDdaTREE 1/2 ton status

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    Go check out MORTEC.COM and look up the numbers, they may have your info.
     
  3. Brian 89KBlazer

    Brian 89KBlazer 1/2 ton status

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    Thanks

    I figured with all the Blazer & chevy folk on this board, someone would know!

    Brian
    Still in search of the TBI KING!!
     

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