New bb build fuel economy

plymouth1937 said

Thinking about building me a 400bb whid 440 crank,ending up whid 451 cui,the direction whid this build is fuel economi not performance,as this engine orignaly is a low comp engine im shooting for 9.5 ratio,any sugestions on cam pistones intake carb,this is a low budget build so cast crank cast pistons and so on,what heads are the most efficent,cast stock heads,valve angles,mild porting.....

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Building for pure economy and expect to save money your almost certainty wasting your time money. How much gas do spend a year and how much do you think you can realistically save bet it will cost 5-10 years or more of saving to build it to do so.
Beyond good tune free flowing exhaust etc.. It's hard the dramatically increase fuel mileage, my 5th Ave with nothing done help fuel mileage gets 16 mpg in town my Avenger with the billions they spent they increased mileage to 22 mpg not much gain. It takes a certain amount fuel to move car your not gonna get a crazy increase.


But building and with a decent balance of power and economy can be a worthwhile goal cause saving money wouldn't be the overall goal so it don't matter cost cause performance cost money. For me decent power 350-450 hp with around 15 mpg plus would my goal, I wouldn't neuter it too much for a couple mpg.