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Thread: 401 Timing

  1. #11

    Join Date
    Jan 2005
    Location
    Middletown, PA
    Posts
    590
    Yes, we're disconnecting the hose from the distributor and plugging it to set the timing. I don't recall if we checked base timing again after hooking it back up, but we did check total timing with it hooked up. We got 30 degrees at 2250 with base at 10, 35 at 3000 with base at 15. Don't recall if we checked total with base at 20.

    The distributor advance is hooked directly to ported vacuum. We didn't use the CTO valve.

    We'll check base with the vacuum hooked up if we ever get it running again. Right now we have bigger problems. See the post on "Collapsed Piston".

  2. #12
    Thank you from BT Ultra tech
    Join Date
    Jan 2004
    Location
    Michiana
    Posts
    457
    collapsed piston? common with the stock AM pistons. maybe had one detonating? which cylinder?
    .................................................. .................................................. .........
    '69 BigBadOrange AMX 390. Former NHRA 'Hot Rod", 9.80s @ mid 130s. Hurst/Airheart front discs brakes.
    Nostalgia ProStock.

    '71 AMX 401 w/5-speed Richmond RR trans. 4 wheel disc. 500++ HP. Nostalgia TransAm.
    .................................................. .................................................. .........
    mailto: dhoelcher@Comcast.net GPS: 41.78, -86.24

  3. #13

    Join Date
    Jan 2005
    Location
    Middletown, PA
    Posts
    590
    Number 7. See our other post "Collapsed Piston". It isn't actually collapsed, just worn real bad on one side.

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