460 Gas Mileage
This is my first 460. I love Fords and know a little about the 351 but nothing about the 460 except what I have read here so far.
I know its a joke asking for more gas mileage out of a 460, but there are tricks out there that work. I just need to know what works for a 460. Keep in mind its a daily driver not a racing engine and I drive 10-20 miles city a day.
I'm working with a 1995 Centurion C350 4x4 4-Door Bronco w/ 200k miles. Under it all its a f-350 4x4 auto w/ 4:10 gears. It's running 285/75/16 tires that are 3.5% larger than stock. It could use a tune up but I'm getting 10-11 city mpg. Hwy seems to be about 10 mpg running 65-70 mph.
On my 2-door 351, I did a tune up and advanced the timing to between 13 and 14, with a little extra gap in Autolite copper plugs, high po wires and coil, new cap and rotor. I picked up 2 mpgs and lots of bottom end. A better air filter and better breathing exhaust helps.
So will the same tune up help the 460?
I know the air filter will help it breath. I read the exhaust needs work. I'm considering a custom y-pipe w/ 2.5" mandel bends into a 3" high flow cat and 3" single stainless exhaust. Don't know what muffler, but I can't stand the sound of a flowmaster. The factory had dual 2" from the muffler back so single 3" is a slight improvement.
As unreachable as it sounds my goal would be 13 city and 15 hwy.
1995 Centurion C350 4-Door Bronco 460
1993 Bronco XLT 351
1965 Buick Riviera 401
1963 Shasta Astrodome
Last edited by Kto17; 05-22-2012 at 03:20 PM.