Hi Folks,

A few rear end questions about my trucks gears. I am not sure how to identify what my gears are. Is there a link to help me find out this that anyone knows about?
Who is the Mfr? Is there a model number from the manufacturer? Everything seems to be original it has a 235 i6 with a sm420 4 spd tranny. I have picked up from this site that I should have a 3.90:1 and if I wanted to hit 70 mph I should change the gear ratio to 3.38:1 from Patricks. Any help on the info is appreciated. Thanks

"As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my sweet ride." -Amen

56 Chevy 3100