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Thread: 388 Questions

  1. #1

    388 Questions

    Building a motor for a 69 Chevy pick up weekend warrior street truck pump gas. 350 block bored .0060 over. It has flat tops 3 3/4 stroke. CR figures 9.8 to 1
    I have heard that this block tends to run hot with a +60 bore. second question, will this engine require an over size oil pan? My 383 lost oil pressure at about 5000 rpm before I put an after market pan.

  2. #2
    Junior Member APPRENTICE
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    I've run .060" over blocks and as long as the cooling system is up to par, they've never ran any hotter than any other.

    The stock pan will be fine as long as a standard volume oil pump is used.
    '78 Chevy Luv--383
    '68 Camaro-- 383 Twin 60-1 turbos
    '69 Chevelle--385 N2O

  3. #3
    Senior Member RACING JUNKIE curtisreed's Avatar
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    I would definitely sonic test the block. JMO

    Curtis

  4. #4
    Senior Member EXPERT BUILDER
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    depending on the block number .060 over can be a lil weak on a stock block, also depending on the clock number u may need a deep pan, #880 needs a deep pan but 010 and 547 dont

  5. #5
    Senior Member RACING JUNKIE
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    Quote Originally Posted by bowhay
    #880 needs a deep pan but 010 and 547 dont
    Please explain

  6. #6
    Senior Member EXPERT BUILDER
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    my last 385 was a 547 block and i didnt need a deep pan i used a stock one, my buddies 383 is an 010 and he ran a stock pan, but my new 383 is an 880 and i had the get a 6 quart tht was clearenced

  7. #7
    Senior Member RACING JUNKIE
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    Quote Originally Posted by bowhay
    my last 385 was a 547 block and i didnt need a deep pan i used a stock one, my buddies 383 is an 010 and he ran a stock pan, but my new 383 is an 880 and i had the get a 6 quart tht was clearenced
    I think he was asking if he needed extra oil pan capacity to prevent loss of oil pressure at higher rpm's. ..not weather or not the pan would clear the crank.

  8. #8
    Senior Member EXPERT BUILDER
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    aaahhhh i see lol my mistake

  9. #9
    Senior Member RACING JUNKIE
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    I've had crank, rod, piston, pan, clearence issues in the past.

    Angry parts, wanted out!!
    No matter where you go, there you are.
    **IN GOD WE TRUST**

  10. #10
    Junior Member APPRENTICE
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    Quote Originally Posted by suicidebomb
    I've had crank, rod, piston, pan, clearence issues in the past.

    Angry parts, wanted out!!

    LOL, yeah I had that problem also... and they got their way too!
    '78 Chevy Luv--383
    '68 Camaro-- 383 Twin 60-1 turbos
    '69 Chevelle--385 N2O


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