Quote Originally Posted by 1gary View Post
Once done,I fully intend to put a tune on it to get high teens-lower twenties in gas mileage.
I hope you get there, Gary, but the best I've seen on my 347 stroker cranking about 475ftlbs of torque is 17mpg, and that's in a nominal 2400 pound fiberglass highboy coupe just tooling around the countryside. I'm hoping for more with a newly revised spark map, but if you're planning low twenties in an AstroVan I should be getting thirty or better!!