4.0 pulley on a T-Trim?
#2
What size is your lower and engine? 4" is a pretty big pulley for a Vortech. I'm getting ~12.5# out of my T-trim on a 383 with a 7" lower and 2.95" upper pulley, big FMIC.
Jim
Jim
#7
Yep, my pulley ratio (7/2.95) is 2.34. With an 8" lower and 4" upper, yours would be 2.0, which is low for the T-trim. The 3.15 would get you to a 2.53 ratio which should be perfect for a 346 pulling all the way to 6700-7000 rpm. Max rated rpm is 55K on them, but Vortech said (unofficially) that occasional blasts up to 10% over redline would not hurt the unit.
Jim
Jim