Bill, I keep reading that leaving out the 1-2 lower spring causes extremely hard shifts and people always go back in to put in the lower spring. Does your trans shift really hard or are you pretty happy with it? I will be doing a J mod next month and would like to hear from someone who has done it recently.
I will be totally honest,
The shift from 1-2 is very firm, it is not however in my opinion, Necksnapping, I did notice I can break the tires free at any time if I am half or more on the pedal. so take that as you want. I like it. the shift from 2-3 is a bit week, I may actually pull the lower spring from the 2-3 as I choose to leave it in for fear it would be too hard, I think I may remove it as the shift is slow and sluggish.
I dont regret removing the lower spring at all. 1-2 is lightning quick for a shift.
2-3 is quick but feels like a delay in shift,
my shift is 0-10 or 15 MPH for 1-2 and then real quick into 2-3 shift and then by the time Im at 40MPH its already in OD
Now if i'm in the gas pedal, the shifts are prolonged and 1-2 holds to 40-50MPH then rips the tires free at 1-2 shift, 2nd runs me to 70-80. so I know it works well
Good luck with your j-mod.
Choose your options well.
faster but firmer shift, leave in springs, direct shift pull the lower and remove 2-3 spring.
Bill