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compression ratio question

This is a discussion on compression ratio question within the Internal Engine forums, part of the LSx Technical Help Section category; my 1978 440 engine has a 8.2 comp. ratio, now i have a great way to raise this with just ...

  1. #1
    Member silverz28camaro's Avatar
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    Apr 2006
    Washington MO

    sebring silver
    2000 z28

    compression ratio question

    my 1978 440 engine has a 8.2 comp. ratio, now i have a great way to raise this with just a head swap going from 88cc chamber to a 78cc, also im going from cast iron to aluminum and ofcourse more flow, i know i cant ask for great mileage from this motor but if i get more compression won't it allow for more power without using more fuel and be able to use less throttle just cruising around

    this 440 is in my 88 ram pickup, probably gets 7-9mpg and will never get good mileage, but if i go with this head swap i will see more power, less weight and if there is a mpg increase its a bonus, what do you all think

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    Super Moderator mrr23's Avatar
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