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Topic Review (Newest First)
09-16-2012 04:01 AM
rsk289 Not a fun job, as it's a stroked 351W in a '68 Mustang, fairly tight fit. But had to bite the bullet - weird, I've closed the gap down from .045" to .035", and I can't get it to ping now. I'm surprised it made a difference, but I guess the lack of a box is not compensated for by the Blaster coil and MSD distributor. Seems to run like a bird now, so thanks for the advice!
09-15-2012 01:31 PM
RWENUTS Close up the gap to .032 and see what it does!
09-15-2012 12:23 PM
Plug gap and pinging??

Motor is Ford Racing 392 stroker with CR of around 9:1, aluminum GT40 heads, forged pistons, MSD ready-to-run distributor but NO MSD box.
I have Motorcraft AGSF32C plugs, as came with the motor from Ford. I have just fitted new ones, exactly the same, and the motor is now pinging on acceleration which it was not before. I have set the gap at .045" as I have no info on what it should be. Is this too wide? There is no ignition box, just the MSD distributor. Could too wide a gap cause pinging? I have changed nothing else.

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