I own a 1984 F150 XLT with a 351w (5.8 liter) and a 4V Holley carb. I 'just' had the differential rebuilt and the Ring & Pinion gear ratio that was in there was 3.0. It is a 9" Ford differential (stock). I had it replaced (it was worn anyway) with 2.75 ratio for better highway driving.
I am not sure about the HP, though. My truck is wholly stock and I have been giving it a 'rolling restoration' since my late brother passed away in 2006 (I inherited it from him).
A good majority of the 1984 Ford F150 gear ratio had 3.00 gears for the stock. In addition, the spline should be a 31.
Limited Slip Differential 3.55 gear ratio
Mine is 3:55
There are three ways to find a gear ratio. 1 A dealer can normally tell from the vin number. 2 There are normally tags or labels on the axle that have part number, gear ratio, and fluid requirement info. 3 You can count how many times you have to turn the driveshaft to get one complete turn of the tires.
I am not positive about this but, I believe that this indicates that the axle has a 3.00:1 gear ratio. Check with you local Ford dealer for a definitive answer.
I have an 86 and it is. If first gear is not really low, it probably is.
The Axel code is on the drivers side door [On the post] it is stated on the sticker either a H9 which is a 3:55 ratio or an I9
will a gear shifter fork plate on 89 ford f150 work on 96 ford f150
The gear ratio of a train, also known as its speed ratio, is the ratio of the angular velocity of the input gear to the velocity of the output gear. The gear ratio is very important when it comes to physics.
Incorrect gear ratio in first gear.Incorrect gear ratio in first gear.
A transmission gear with a ratio below 1:1, which improves fuel economy by reducing engine revolutions per minute at highway speeds.
There are three ways to find a gear ratio. 1 A dealer can normally tell from the vin number. 2 There are normally tags or labels on the axle that have part number, gear ratio, and fluid requirement info. 3 You can count how many times you have to turn the driveshaft to get one complete turn of the tires.