250 I6 hp gain

Discussion in 'General Maverick/Comet' started by x72COMETx, Apr 5, 2013.

  1. x72COMETx

    x72COMETx Member

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    im taking the head off my 250 Inline 6 to replace the lifters and was wondering if their was anything else i could do to get more horsepower thanks
     
    x72COMETx, Apr 5, 2013
    #1
  2. 71gold

    71gold Frank Cooper Supporting Member

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    have it milled a little...:yup:
     
    71gold, Apr 5, 2013
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  3. 71gold

    71gold Frank Cooper Supporting Member

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    have the head milled a little...:yup:

    engine bored, a larger cam and header for the 2 barrel carb.
     
    71gold, Apr 5, 2013
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  4. bomrat

    bomrat Member

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    port the head if possible
     
    bomrat, Apr 5, 2013
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  5. adam 72

    adam 72 Member

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    new springs, retainers,adjustable rockers
     
    adam 72, Apr 5, 2013
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  6. Krazy Comet

    Krazy Comet Tom

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    Two heads are better than one...
     
    Krazy Comet, Apr 5, 2013
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  7. rthomas771

    rthomas771 Member

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    If you can find them...use 260 V8 valve retainers. They are 6 grams lighter, total of 72 less grams. They are also stronger and fit the 6's valve stem. 289/302 exhaust valve springs used for both intake and exhaust on the 6 cyl. Rebuild a 77-80 head to gain the larger intake log (1345 cc verses 1240 cc) and larger intake valves (1.75" verses 1.65"). The hex head has a 1420cc intake and 1.75" intake valve.
     
    rthomas771, Apr 5, 2013
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