Some M1 porting pictures and flow numbers

9 mi per gallon! 56 miles each way to track. Car weighs 3700 lbs with me in. Added the recommended 750 carb, headers etc., for that engine. No difference between changing between double pumper or vacuum secondary either. I've ranted on this engine/car set up before.

No offense but when the engine is numb to tuning the entire combination is off.