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Originally Posted by hkelley
That is where I started. I had a 750dp that kept flooding. Dennis Olthoff had it for a week and couldn't get it sorted. It was Dennis that decided to put the 870 on.
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The 750CFM was too big a double pumper for your engine, the same goes for the 870cfm carb. A properly tuned 650cfm double pumper would be your best bet. Keep in mind that it can be as simple as adjusting the metering plates and jets once you have the proper size carb on the engine. Then it's a matter of balancing the timing and the carb adjustments until you get it just right.
Been there, done that countless times and learned a bunch from those experiences once I got time on a computerized chassis dyno.
Bill S.