I have a problem and need some advice. I currently own a 1988 Ford F150 4X4 with a 300cu inch 6 cyl. 5spd. manual trans. WITH 3:08 Gears. I am pulling a 6000 pound RV trailer. When we bought the trailer they said it was made to be towed behind a 1/2 ton PU. However I have a lot of trouble getting this rig moving. I know the biggest problem are the 3:08 gears. But when being passed by a semi , the ride quickly turns into a white knuckle ride, even with all the latest sway control devices. I think it is the sheer weight of the F150 is not enough. I will be purchasing a new truck in about 4 years, but for now cash is tight. Now my problem, do I spend the 8 to 9 hundred dollars and change the ring & pinion gears to let's say 3:73, or do I sell the truck and add what I would spend for the gear change and buy something bigger. The problem is my truck is almost cherry, I know everything about it and buying somebody's lemon scares me. I am going to look at a truck tomorrow. It is a 1989 F350 4X4 with an automatic trans and the 351 V8. I don't know the gear ratio, but I would hope they are not 3:08's.I know the F350 would pull the load better, but how trust worthy is the 351 motor. I know my big 6 will last a long time and is a proven motor, I don't know much about the 351. Any advice would be greatly appreciated. Also what kind of gas mileage could I expect towing and not towing with the 351. Thanks ahead for your reply.
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