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  1. L

    Odd “knocking” noise at high RPM while WOT

    So I figured it out, had the distributor connected to manifold vacuum which would add about 20* of timing at idle. With the extreme advance at idle I could only get it to run right at idle or while driving, connected it to ported vacuum set the timing to about 12 and it runs great now with no...
  2. L

    Odd “knocking” noise at high RPM while WOT

    I don’t have a light for total timing, gonna get one and check tonight. I’m guessing this is my issue as I only experience the issue at WOT high rpm with likely 0 or near 0 vacuum.
  3. L

    Odd “knocking” noise at high RPM while WOT

    I looked this morning before work, initial timing with vac advance off is at 14* btdc, didn’t have time to mess with it much, gonna try and set it to maybe 10 or 12 and see how it runs.
  4. L

    Odd “knocking” noise at high RPM while WOT

    I gave it the good and tight, not sure the exact torque.
  5. L

    Odd “knocking” noise at high RPM while WOT

    Hi, I’m brand new to the forum so apologies in advance if this is in the wrong place. I recently replaced my stock intake and carb on my 1974 c10 350 with an edelbrock air gap rpm and 1406 combo I got off Craigslist. The factory smog pump system and manifolds are still on the truck, which...

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