the motor is a L6 235 with 3 on the tree. I removed the original manual trans and installed a TH350 automatic. From what I have been reading this rear end would probably give me 3000+ RPM @ 60mph which would be undesirable. So I wanted to see (with a calculator) what I could expect and using the 2:1 gear ratio in the RPM calculator it says I can expect 1500 RPM at 60 MPH which also sounds undesirable. Isnt a 2:1 ratio odd for a 59 Apache 3200?
