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30 Closed Cab PU · 10-05-2020, 09:05 AM

Jim Bullock x4 - bought a rebuilt from him this year, very satisfied, If rebuilt by him they are tested/use flow tested jets, runs a ton better then the 2 rebuilt zeniths I also have. Since they are tested they have the Gas line adapter fitting on them. Simply swap in , form your gas line for the Marvel - maybe adjust the idle jet where you want. He sends instructions with the carb. Quick turnaround. My truck will now idle at 420 rpm which it previously would only idle smoothly down to 500 rpm, never stalls, seems to run better/smoother.

10-05-2020, 09:05 AM	#8
30 Closed Cab PU Senior Member Join Date: Aug 2018 Posts: 2,332	Re: Marvel Carburetors Jim Bullock x4 - bought a rebuilt from him this year, very satisfied, If rebuilt by him they are tested/use flow tested jets, runs a ton better then the 2 rebuilt zeniths I also have. Since they are tested they have the Gas line adapter fitting on them. Simply swap in , form your gas line for the Marvel - maybe adjust the idle jet where you want. He sends instructions with the carb. Quick turnaround. My truck will now idle at 420 rpm which it previously would only idle smoothly down to 500 rpm, never stalls, seems to run better/smoother.