Re: what does alex ratio mean and how do you read it?
differant gear ratios help some with bottem end power or top end driveability. the lower the gear ratio number, (like 3.55) will make the truck run at lower RPM's on the highway at 60-70+ MPH, and get better fuel economy at higher speeds. a higher number (like 4.10's) will make the truck accelerate quicker, and typically pull a trailer or heavy load better, but you loose some of your top end power and the truck will run at higher RPM's when you're at highway speeds, resulting in lower highway fuel mileage.
the other benifit of a higher gear # is that it allows you to run larger (taller) tires. bigger tires can actually drop the gear ratio to a lower #. so if you had 4.10 gears, and decided to run 31" tires, you would wind up with closer to 3.73 gearing, which can help improve highway fuel mileage as long as they arn't super wide.
2000 XLT 4X4, 3.0, Auto, regular cab - throttle cable mod, K&N drop in filter, taylor thundervolt 8.2 plug wires, autolite sparkplugs, Accel coil pack, AVS Ventshades, Rampage LED tailgate light bar, BFGoodrich All Terrain T/A tires, Trail F/X toolbox, cruse control pod light fix, Cobra 19 ultra II CB, lil wil antenna, pioneer door speakers, expo woodgrain radio bezal, 06+ mirrors & tails, powerdome hood
2000 XLT 4X4 Offroad, 4.0 / auto, supercab - the project truck!