I am looking to build my Fiero to have more power and cruise the interstate, do trips, etc. I am wondering what RPM i would be turning if i use an F23 trans out of a caviler. Should be 3.94 final drive. 1st 2nd etc = 3.58 2.02 1.35 .98 .69. Im not sure how tall a rear Fiero tire is but i believe it is around 25 in tall. I tried using a calculator online with my lizard brain. I got 3000 RPM at 80 with that setup. Not sure if that is correct. Thoughts?

quote Originally posted by SecretMoparGuy: I am looking to build my Fiero to have more power and cruise the interstate, do trips, etc. I am wondering what RPM i would be turning if i use an F23 trans out of a caviler. Should be 3.94 final drive. 1st 2nd etc = 3.58 2.02 1.35 .98 .69. Im not sure how tall a rear Fiero tire is but i believe it is around 25 in tall. I tried using a calculator online with my lizard brain. I got 3000 RPM at 80 with that setup. Not sure if that is correct. Thoughts?

Which calculator did you use? This one at gafiero.org is excellent. Just set your tire size.

quote Originally posted by AsaBergman: Which calculator did you use? This one at gafiero.org is excellent. Just set your tire size.

You are doing the lords work.

Thank you