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cableguy0 · 04-23-2011, 05:23 PM

The 2 barrel carb is a large part of your problem. 4 barrel carbs run around on the much smaller primaries in most cases allowing for better fuel economy. @ barrels have only primaries so they have to be large enough to feed the engine at all rpms. I would look into a 4 barrel intake a 600cfm carb as the first upgrade. I would also be very curious about what the rear gear ratio is. A lot of these older trucks had a low gear in them. Stock ignition is another unknown. Stock for that truck would be point ignition. The cheapest best upgrade would be to an hei distributor and do a full tune up in the new process. New plugs wires etc.

04-23-2011, 05:23 PM	#11
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	Re: Identify engine The 2 barrel carb is a large part of your problem. 4 barrel carbs run around on the much smaller primaries in most cases allowing for better fuel economy. @ barrels have only primaries so they have to be large enough to feed the engine at all rpms. I would look into a 4 barrel intake a 600cfm carb as the first upgrade. I would also be very curious about what the rear gear ratio is. A lot of these older trucks had a low gear in them. Stock ignition is another unknown. Stock for that truck would be point ignition. The cheapest best upgrade would be to an hei distributor and do a full tune up in the new process. New plugs wires etc. __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.