check your idle mixture screws. How many on that carb? Close one at a time and count the # of turns and then re-open. They should be the same, if they are not they may need adjustment. Check the timing too.
running 7 psi fuel pressure carb is clean and brand new filter.... firing order ill check next, i didnt put this together i bought it like it is so ill go there next.. any other ideas let me know Fuel psi? carb clean? dirty filter, chuck o shit stuck in the carb?
check your idle mixture screws. How many on that carb? Close one at a time and count the # of turns and then re-open. They should be the same, if they are not they may need adjustment. Check the timing too.
Check for vacuum leaks while your at it. You said plugs look fine but did you check all of them or just a couple?
Have ya run a compression check on it? maybe a lobe went flat?
ok guys, had my dad tune this.... the float levels were off and the timing was off a tooth. also my alternator went bad,and i had a bad balast resistor so between the low voltage issue and resitor and tuning that was it! fixed it all it ran like a rapped ape!!! gps it ran 81@5600 rpm... no issues! thanks for the help everyone