When you replace the flywheel torque the nut to 95 foot pounds.You will need to remove the stator to install a new belt. When you replace the distributor belt do not get it too tight.Believe it or not, too tight will cause shifting problems. The distributor is held by two bolts, one in a slot for belt adjustment. Snug the other just enough so you can pivot the distributor. Set the flywheel to top dead center on the block pointer. Now, turn the distributor so that the curved line in the pulley matches the curve of the flywheel and the straight line points directly in at the flywheel. Move the distributor body until the belt is just snug. Correct tightness is thus. A .010 feeler gauge pressed in the center of the belt like a finger should deflect the belt about 1/8 to 3/16 inch before bending. Timing should be 30 or 32 degrees BTDC at wide open throttle.
You do not need a timing light and the engine need not be running. Put the control handle in wide open throttle position and turn the ignition key on. Remove the top plug and ground it. Turn the flywheel by hand slowly. As the flywheel comes up to 32 degrees BTDC, the plug should spark.. The block pointer may have a number of lines on it. The large line is TDC. The flywheel will have a 36 degree line. 32 degrees is four small lines to the left of the large line.
Points should be set to .010 open on a high lobe. High speed "bogging will not be the ignition or CD box. Their mode of failure is complete loss of spark. It is difficult to diagnose but I would guess that it is a fuel problem. Floats set too low could be part of the problem. They need to be even with the carb casting when inverted. There is also the possibility that the inlet seats have swelled a bit restricting fuel flow.
Remove the fuel pump and check that the impulse hole in the large portion (first stage) is not clogged. Remove the impulse hose from the bottom cylinder and be sure it is clean and has no leaks. be certain the fittings are also not clogged. When you rebuilt the fuel pump did this include a new diaphragm AND gasket? Did you replace the button (check) valves if needed? If so, did you install them the correct direction?
At the top of the forum (sticky) watch the video on synchronizing carbs and timing. It is important to get it correct
