1969 Super Bee 3660 lbs

472 CI, 9.5 CR

Iron heads with bowl work flow 367 @ .700, 330 @ .400

Comp .557/.540 252 @ .050 With stock rockers,intake lift at valve is only .485"

JR 2" headers 3" exhaust with X pipe

MP Dual plane with cleanup and divider milled 5/8"

800 Holley DP with 68 primary jets and enlarged power valve channel restrictions

Ford EDIS distributorless ignition controlled by Megasquirt

Four speed/ Dana 3.54/ 295x50x15 Hoosier QT

On radial rear tires, the car consistently got 12-14 MPG during easy driving and ran mid twelves at 118. The switch to the QTs has dropped it about 1 MPG I've programmed the ignition for 42 degrees advance at light load cruise conditions. I didn't see any gain from the original 35 degrees. In spite of the reduced primary jet size, the O2 sensor shows the engine to still be rich at cruise, with inlet air temps running about 130-140 degrees. Once I've finished the EFI install, I expect to see a well tuned 14-15 MPG.

The Indy intake is probably hurting your mileage. I modeled it for my 472 on Engine Analyzer Pro and it really knocked the bottom out of the torque (and efficiency) in the 2500-2700 RPM cruise range. Still, with tuning, you should be able to increase your mileage significantly. Everyone has their opinion, but a fuel efficient Hemi is nothing to be ashamed of

Roger