Anyone run an externally balanced 460 in their jet boat?
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Anyone run an externally balanced 460 in their jet boat?

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    Senior Member Texgo's Avatar
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    Default Anyone run an externally balanced 460 in their jet boat?

    I pulled a 460 out of a 1979 motor home to replace my dead Olds. I got home with it and realized I have a D9TE block with the counterweight on the front of the crank. Just wanted to get some input on this engine.

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by Texgo View Post
    I pulled a 460 out of a 1979 motor home to replace my dead Olds. I got home with it and realized I have a D9TE block with the counterweight on the front of the crank. Just wanted to get some input on this engine.
    He used many of both (int and ext), obviously must have correct flexplate and front balance hardware ("the axe") Tom

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    Senior Member nosfomoco's Avatar
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    They have deeper bores, so less piston skirt is exposed. I installed one from 88 ford van with dove heads and a small cam, didn't run that bad, down side I had to cut.the motor plate to fit that balancer weight.

    Sent from my RM-917_nam_usa_214 using Tapatalk
    1978 Eliminator Sport Cruiser 20.5ft BBF 460!

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    Senior Member Texgo's Avatar
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    I also noticed that the counter weight is too big for the front mount. I have to figure out how to cut it without it looking raggedy.

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    Senior Member johnf's Avatar
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    Default counter weight

    Use a hole saw give it a 1/4" will be hard to see after balancer is on. If your wanting to go internal balance I will give you a 2Y crank if needed.

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    Senior Member Texgo's Avatar
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    Appreciate the offer. I think I will do the hole saw thing - good idea. I can clamp some plywood on the bottom to hold it centered.

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    Member 78hallett's Avatar
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    I run and external balance and was able to hole saw the front mount also. Just go slow and use a lot of cutting oil.

  10. #8
    Senior Member Texgo's Avatar
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    On a slightly different topic, do you guys run a flywheel or flexplate?

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