Heavy duty vs Regular Duty
I just don't know which spring will be best.
These two springs are out of a 4L60E Superior Shift Reprogramming Kit. (see pictures)
Heavy Duty and Regular Duty is all the info I have.
Can anyone give me some comparison in shift characteristics in the two?
98 Chevy K1500
It's no hot rod but I would like it to tow occasionally.
Has anyone used one of these in a similar set up?