about 2 months ago I swaped the 4.6 FI out of my 97 1/2 ton truck put in a 95 350... vette intake and old HEI, Edlebrock 600 cfm it get 10 miles to a gal... anyway... question 1, what is the best spark plug to run, question 2, any ideas on how to improve the mpg would be great.... there is not computer, full dual ex. with headers, no smog stufff at all... question 3, almost forgot, what gap on the plugs? thanks
john orr 67 cutlass supreme 4 spd tampa fl
