View Single Post
Old 08-16-2014, 05:04 PM   #13
66Submarine
Registered User
 
66Submarine's Avatar
 
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
Re: C30 with 250/SM420/4.10 gears MPG/fuel economy results

Quote:
Originally Posted by argonaut View Post
I agree that a bigger carb and headers offer little opportunity for improving fuel mileage. I think the HEI might help slightly. More spark energy might get you a more complete combustion and allow you to get equivalent power with ever so slightly less fuel and air.
Yeah, that's what I'm thinking; probably helps a little, just not the several MPG that I see some claiming. Power from optimized spark/ignition is free though, and any extra free power is good!
__________________
1965 C30 pickup 350/SM420/4.10's (daily driver) thread
1968 Impala 4 door sedan (future driver project) thread
66Submarine is offline   Reply With Quote