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Thread: 383 stroker

  1. #1

    383 stroker

    I have a 383 stroker in a 68 camaro that when accelerate from 1000-2500 rpms with or without a load on it will back fire throught the carb does not make any difference what kind of carb does the same with a holley or edlebrock 26 total timing

  2. #2
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
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    Is this street-street/strip - or strip only car ?

    At what point of acceleration does this happen ?

    If it's just as you stab it, it could be not enough accel pump volume, even on 2 different carbs, it could be weak or not enough. Also could be your advance is not working or is gummed up within the distributor.
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  3. #3
    Senior Member RACING JUNKIE
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    26* is not enough timming even for a stock engine, should be 32*/36* total timing.

    JMO

    Zip.

  4. #4
    Senior Member RACING JUNKIE
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    Quote Originally Posted by zipper06
    26* is not enough timming even for a stock engine, should be 32*/36* total timing.

    JMO

    Zip.
    X2
    I'm pretty sure my lawn mower has more timing than that!

    Double check your firing order too.
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  5. #5
    Senior Member MASTER BUILDER
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    Needs more timing
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  6. #6
    Senior Member EXPERT BUILDER
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    Quote Originally Posted by zipper06
    26* is not enough timming even for a stock engine, should be 32*/36* total timing.

    JMO

    Zip.
    x4

  7. #7
    when I put more 32-36 in it it diesels when i try shut it off and i still get a back fire through carb, also when i remove vacum advance hose the motor dies,

  8. #8
    Senior Member EXPERT BUILDER
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    check for vacume leaks

  9. #9
    Senior Member RACING JUNKIE
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    Are you sure that you have the correct vacuum source connected to the vac/adv? It may be that you have too much constant/high vacuum to the vac/adv & it is advancing too soon... while not enough timing on motor which maybe is why it dies when you disconnect the vac/adv hose... not sure, just a guess.
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  10. #10
    Senior Member RACING JUNKIE
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    Sounds like your timing marks are not accurate


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