If you want LOW FUEL consumption Why in the world do you want to install a bigger carb?? Step up the cam to a RV/Towing cam, Dual exhaust. A webber/holley 2b Like what Tom Langdon sells.Or a small 2b 350 CFMs. Just to change to a Bigger Carb and Dual exhaust Won't help your MPGs. A 292 was ment as a work Horse Not really built for MPGs
The Dual exhaust In stock trim would do you more good Then Just a bigger carb.
God doesn't like ugly.
