Originally Posted by
427 fordman
What gears? 4.10 or 3.55's? Either way, that is low. Brakes, alignment, etc. should be checked. Fresh diff. fluids, synthetic is best, can't hurt. Any moisture from leaks in the valley on top of the motor? Clean fuel filter and screen in the fuel bowl clean? Stock he should be able to get 15 easy, maybe higher, depending on rear gears some and what speed he drives. Ideal to keep it under or at 2k for mileage. Mine runs right at 2k at 75 in od and makes 17 empty. If I drive 60 I can get 20, but my upgrades do help in mileage a little.
By the way, love the username! Would love some pics of whatever you have that motor in. PM me some if you've got them.
lol I wish I had some pic's of it. But its not actually my truck. I don't know how much you know about Monster Trucks...But the first Bigfoot Monster Truck is a late 1970's era Ford F-250 powered by a all aluminum supercharged methanol injected 640 Cubic Inch Alan Root Ford Hemi Engine. I've always been in love with that truck. Here's some pic's off the net of it.
http://www.google.com/imgres?q=Bigfo...w=1280&bih=815
http://www.google.com/imgres?q=Bigfo...w=1280&bih=815
http://www.google.com/imgres?q=bigfo...w=1280&bih=815
Anyway about gearing on my friends truck...We checked on his door frame today and it had 3.55 gears so something's for sure a little off for him to be getting 10mpg. I think the complete fluid flush is a great start. I'm going to mention it to him and see what he thinks about it. Full Synthetic does indeed work wonders.