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Thread: timing a 283

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  1. #1
    md85 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2004
    Car Year, Make, Model: 57 willys jeep cj5

    timing a 283


    My 283 is out of a '66 chevelle and is in my rebuilt cj5. the engine was rebuilt to stock and has 1500 miles on it. A few questions...

    1) what should the timing at idle be on the 283? (checked with vacuum adv. unhooked and using a timung light)?
    2) Setting the idle rpm to around 700-800 with lines hooked up, will unhooking them affect the idle rpm? If so, does it need to be readjusted when checking the timing?
    3) Should idle mixture be adjusted before or after the timing (or does it matter)?
    4) basic procedure, warm engine, connect light, disconnect vacuum advance and plug, check timing, adjust as needed to correct timing, tighten bolt, recheck timing, connect vacuum line, good to go...
    Sound right?

    1957 Willys CJ5 283 sbc
    1985 Mustang GT 5.0 (all stock, original owner)
    2004 Ford F150 4x4 Lariat
    2008 Porsche Cayman S
    2010 Volvo C30 R design Turbo
    2011 Porsche Cayenne Turbo

  2. #2
    Two8tyThree's Avatar
    Two8tyThree is offline CHR Member Visit my Photo Gallery
    Join Date
    Oct 2010
    my keyboard
    The road is long with many a winding turn.

  3. #3
    Mikej's Avatar
    Mikej is offline CHR Member Visit my Photo Gallery
    Join Date
    Aug 2004
    Car Year, Make, Model: 1935 Chevy Master Sport Coupe

    Timing should be check with the vac line unhooked and plugged at that rpm. Then reconnect and fine tune idle screws and engine rpm.
    If it's not broke, fix it anyway.

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