at school as i type this lol. my 87 4x4 has a 2.6L and 4.22 gears 235 75 15 M/T tires. i just got it rebumy truck weighs over 4600 lbs. ilt and all. like literally yesterday i finished up and took it home (i work at a shop they let me use it for a few days) it started to not go into 5th today, and when i got to school it wouldn't go out of 4th.

that said i rolled in a bit fast at 25 and had no problem. i parked in a spot where i can stick it in 4L and pull straight out

in 5th i would say it did 2350 or so at 55, like 3250 at 75. remember this is a 4.22 gear, it needs it as it weighs over 4600 lbs (before the camper top)

in 4th it did like 2750 at 55, idk what 75 was like it but i would say it would do somewhere around 3750 rpm in 4th at 75. the torque peaks at 2500 rpm so its around peak torque where you are driving. most POWER RAM trucks had the 4.22, some had the 3.91. i am glad i have the 4.22 because my metal/tin/glass/aluminum camper top weighs over 200 lbs. it was 4655 factory it was like 4850 on the scale at the junkyard (had to pick up a 5.9L for a freind, took the truck off and weighed it out of curiosity and its a brick

now its 9:15 and my music teacher doesnt care that im on my phone lol