Re: 1976 Chrysler 75 HP timing question
32 degrees before TDC at WOT.
That engine probably has a 36 deg mark on the flywheel. The pointer usually has 2 lines on the before side of the long or heavy TDC line and 4 lines on the after side. Each line represents 1 degree. The 36 mark needs to be set 4 lines to the left of the long top dead center mark on the pointer when looking at the engine. If you intend to use poor quality fuel (usually from marinas) then you can set the timing to 30 degrees with very little loss of performance--you probably won't even notice it.
You do not need to run the engine to set the timing. You do not even need a timing light. Remove all three plugs and ground them so the engine will not start on you and enter you into the 9 finger club. Simply set the throttle to wide open, then turn the flywheel slowly by hand with the ignition on. You will see the spark on the #1 or top cylinder. And if you confuse the wires, firing order is 123. I like to mark wires with small plastic wire wraps -- makes things simpler and faster next time Ineed to replace them.
If you suspect that the pointer has been moved, you first need to determine TDC and re-set it. If the factory paint is not broken on the adjusting screws, then it was never re-set and you should be OK.
The two plastic blocks are threaded in opposite directions so before you install them, center the unthreaded portion or the center of the screw between them with about 1/2 inch between both plastic ends. This will put you rather close to the proper timing
