I have gotten better mileage w/a small RV type camshaft, Offy intake & a 4 bbl carb over the stock 1 bbl carb.

Buy an Edelbrock intake manifold & a 1 -2 bbl carb. Think Larry can post a pic on here, he might even sell you his?

Or use a small volume manifold like this http://www.ebay.com/itm/5416-Offenhausse...c4cfc40&vxp=mtr

Don't let anyone trick you into using a BIG Clifford intake to get better mileage, it is not intended to give you better mileage.

MBHD

12 port SDS EFI