With regular timing light.
Depending upon which 400 you have, 18° or 20° initial timing is factory. 20° is bottom of the tab on 220 hp engine, setting initial 1/4" below the plate is not unusual.
40° plus (initial+centrifical) is not unheard of for these engines, that does not include vacuum advance.
From TDC to 20° is right at 1.25". If centrifical is working right, (watching with timing light), you should gain about that distance when you rev the engine a little, timing mark on balancer should end up 1.25" to 1.5" below the plate.
Vacuum advance hooked up and working, should add close to that distance again.
Just something to go by if you don't have a dial back timing light.
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All the federales say,they could've had him any day
They only let him slip away, out of kindness...I suppose
Poncho & Lefty
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