I could use some advice from this group...I have a 68 with a 2 barrel
289 that was rebuilt last year that gets about 11 miles per gallon. I'm soon going to be commuting 360 miles a week, and would like to get better mileage given that gas costs about $3.20 a gallon where I live. I know that I can get better mileage by switching to a 4 barrel and not driving like a maniac, but am not sure how other modfications would effect things. Would dual exhaust make the engine more efficient and lead to better MPG, or would it make things worse? What about different camshaft or heads? Any advice would be appreciated.thanks,
ashwin