So I love old school stuff, but was never a big speed demon. The ol' Charger has seen the strip a few times, and has does a few dozen burnouts a year... The car is my primary source of transportation you see (I do have a '62 C-10 stepside with the 235 for parts and winter snow), so all the mods have been to make it more drive able (mild 360, electronic ignition, overdrive four speed trans with truck granny gear to make it pull, highway gears). I hope that you hot rod guys don't ream me too bad for this, but, in 1966 minimum wage was about $1.25...gas was $.32 a gallon. Today, minimum wage is $7.40 in Michigan, and gas is $4.15 a gallon...yeah.. Minimum wage doesn't get ya very far. I make way more than minimum wage..but I take my car to more than a Sunday cruise once a week. Or a drag. It's been on every date, every road trip, and every job interview with me in the last 3 1/2 years. Hell, I've seen most of the country behind it's windshield. So I have to ask. With leaving all it's old school awesomeness...now bear with me... how can I build the most fuel efficient v-8? No I'm not looking for any unrealistic numbers. I achieve about 15-18 average. Interstate will do 19.5 consistently. I was thinking about dropping to a 318, but I'm afraid it's lack of low rpm torque would kill it in overdrive. Would adding roller internals help? A low lift cam and some soft valve springs as well? I know that would reduce friction. All I really use is the torque. The car doesn't see over 5,000 rpms. And a smaller car is out of the question, and so is a late model. I drive no such things. I like the girth of my behemoth Dodge. It's safe and comfy.