FUEL MILEAGE! The 292 in my '65 Suburban drinks gas like a fish..water..

Check the rear differential. I'm changing mine to 353 gears to up the MPG.

As far as the install, you will have to wait for someone more qualified to answer that. Someone will come along here soon.

Iron Clad

1960 Chevy Apache 1/2-ton
1965 Chevy Half-Ton Suburban
1966 Chevy C60 2-Ton

Stupid is as stupid does. - Forrest Gump