check out gear vendors,ive been thinking of putting one in a 87 i just bought.I drove for a long time a 79 ford with 460, and one of these installed from the dealer.I never had a seconds problem with it in 250,000 miles.believe it or not THAT truck got right at 20 mpg.A cheaper way might be to install an AOD transmission(not eod electric shift that requires computer control) they can be bought fairly cheaply,and with the right parts from a donor truck are a bolt on.lots of info on ford truck forums.before you spend a lot of money though,consider how you drive the truck and what advantage you would gain by swapping rearend gears.on mine by swapping to 3.08 gears(from 3.55) ,and changing from the stock @26" tires to a taller 30" i can gain 15%.drop 65 mph engine rpms from @3000,to @2500(calculated) which should make a better hyway effecient vehicle.with that and a aod rpms would be close to 1500,which would be so low on my engines(351) torque curve that it would likely be worthless.do a search on web for gear ratio calculators,and you can plug and play with different setups.keep in mind you dont want to get to far below your engines peak torque,3-500 rpms below peak torque is a good aiming point.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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