Ford F-150 Repair Question
Topics covered: Engine, Fuel economy, Rpm.
Mileage: No information provided.
Mileage: No information provided.
Asked on January 2, 2007
Rear end gear change
I HAVE A 2000 F-150 4.6 V8 EXT CAB 8FT BED AND A 355 REAR END GEAR, FOR FUEL MILEAGE REASONS
WOULD YOU RECOMMEND REPLACING THE 355 WITH A 308 GEAR ? WHAT IS THE DOWN SIDE OF CHANGING TO A 308 ?
THANKS
specktruck@hotmail.com
WOULD YOU RECOMMEND REPLACING THE 355 WITH A 308 GEAR ? WHAT IS THE DOWN SIDE OF CHANGING TO A 308 ?
THANKS
specktruck@hotmail.com
Asked by specktruckAnswer
Replied on January 5, 2008
less high speed power and low end power, other then that not really.
Replied on January 16, 2008
If i was you i would leave the 3.55 gears in because your not gonna gain anymore than a couples mpg's but lose alot of bottom end
Replied on January 17, 2008
I second that. Your engine will generally turn at a lower rpm... do a lot more lugging if you go to 3.08's. Keep the 3.55's and the engine will be a lot more efficient by running in it's optimum powerband. You'll have more power to the wheels and get better fuel economy.