MPG Motor Magnum vs. Hemi

slicknapier said

Thanks for all the suggestions. It’s a pretty tough decision. I love the 413 and push button, but I just feel it would be tough to get the mileage up in to the mid-high teens? Tires will probably stay 14’s with factory 3.23 gears. I can get a 5.7 hemi here locally complete for $1500. Magnums can be had around $500. Then the cost of the fuel and computer system . I will look more into the gear vendors as well.

Click to expand...

You could check to see if there is a quench dome piston made for the 413. They do make them for a 440. They can be used to set up quench with an open chamber head and greatly increase efficiency.Keith Black KB Performance Pistons KB184-STD
You could also have the 413 set up with zero deck pistons and get a set of a/m closed chamber heads to do the same thing. This set up combined with a well tuned thermoquad shout do mid teens for mileage in your wagon with no problem assuming your able to keep your foot out of it.