Right now I have a Summit 600 cfm on a 312 that is bored 0.90 w/stock cam, aluminum pistons three speed with Overdrive 3:89. Cruise at 70 mph at 2,000 rpm.
Gas mileage is maybe 18 mpg. The primary jets are .67. Would it help to put smaller jets in the primary and secondary for better gas mileage. Planning on heading to Detroit's Dream Cruise.
Is the 600 cfm to big for the engine.
What do ya think, any advice ?
Thanks in advance,
Tim
Hot 'n Humid
Florida 33706