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Tap and Die sizes

Discussion in 'The Garage' started by 77crewcab, Aug 17, 2005.

  1. 77crewcab

    77crewcab 1/2 ton status

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    I am looking to buy a tap and die set, can someone tell me what sizes I need for a big block. I don't really understand what the sizes all mean or what would be needed, I just need a list of required sizes so I can make sure they are included in the set I buy. Thanks!
     
  2. Muddytazz

    Muddytazz 1 ton status

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    When I bought my set yrs ago, I got one that goes from 6-32 clear up to 1-X(can't remember the TPI on the 1" one)but that is for a complete set of TAP and DIES.
     
  3. 77crewcab

    77crewcab 1/2 ton status

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    which ones are actually used for our engine though?
     
  4. Muddytazz

    Muddytazz 1 ton status

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    Prolly only the ones from 1/4" - 5/8"
     
  5. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    On chevy's you will need, 1/4"-20, 5/16"-18, 3/8"-16, 7/16"-14

    The 1/4"-20 will do all valve cover bolts, timing cover bolts, and all oil pan bolts with the exception of the 4 corner bolts which are 5/16"-18.

    The 5/16"-18 will do the 4 corner oil pan bolts, cam gear bolts, oil filter adapter bolts, and also a few plug wire loom bolt holes on the sides of the block.

    The 3/8"-16 will do all motor mount bolts, water pump bolts, bell housing bolts, intake manifold bolts, and exhaust manifold bolts.

    The 7/16"-14 will do all main bearing bolts, oil pump bolt, and head bolts.
     
  6. 77crewcab

    77crewcab 1/2 ton status

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    Thanks that was exactly what I was looking for including going so far as to tell what fits where. Very helpful! :saweet:
     

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