fuel efficiency

Hi All, I've just joined and already finding so much awesome information, seems like an amazing community so first of all I would like to thank you for having me. I really am new to these trucks, prior to this I've only ever owned a Mitsubishi Challenger and I loved it so now I have a FJ62 I'm...

Hey I may as well try posting here. I recently purchased a 1981 C1500 with a propane conversion. Its a 305 high compression with a high lift cam and a single plane Holley intake. It's running an Impco 425 mixer, Model L vaporizer, and a vacuum lock off. I filled the tank at 64,593km 137km and...

Got back from my trip to Georgia from California. Drove 7003 miles and logged gas for 6771 miles. Missed one tank. For the 6771 miles, I used 422.4 gallons. Overall MPG was 16, with a best tank of 19.6 MPG driving through New Mexico into Texas (I 40) and a worse tank of 12.5 MPG driving a...