292 4bbl Carb

[NEWFISHER]

I get 19 mpg with 3:73 , 235/75/15 , 700r4 and my set up., I think the big cam, lump ports, big valves and hei have alot to do with the intake/carb and header combo. We also tow a 4,000 lb trailer in the summer and empyty it will cruise at 70 all day long.

[TJ's Chevy]

Originally Posted by Classic1965

Ok so I guess I started the debate of the week or something. I don't plan to drive this truck in the snow or winter or in the cold, it is going to be a daily driver in the warm part of the year. I'm more concerned about fuel economy then horsepower and I plan to tow a 20' boat with the truck. Like I said it is a 292 with a 3 speed. I just wanted to know what is the best setup for fuel economy that can still pull a boat without issue. This truck will be driven long distances in the summer as everything up here in my area of Canada is spread apart. So I guess the marine carb idea is a bust, just wondered if it was worth my time because I had a few different carbs from different small block engines. So what do I need for the best fuel economy without losing towing capabilities?

Your best bet would be to do this...Head work...Have lumps installed..and then convert over to a 1.84 intake valve leaving the exhaust valves stock. Then have a 500 edelbrock installed on a clifford intake and a set of headers with an HEI...that'll give you a little more power and torque and mileage...the original cam is setup for this type of towing so you'll be fine there.. also converting over to an over drive tanny would help...in your case..maybe an NV4500...its a 5 speed that still has the low 1st gear so yer not burning up yer clutch when loaded. But don't expect to get super good mileage when towing...and that goes with any engine.

[NEWFISHER]

Im at 10-12 towing

[TJ's Chevy]

Originally Posted by NEWFISHER

Im at 10-12 towing

As good as any 350.