Join Date: Jan 2009
Thanked 64 Times in 60 Posts
I've talked to a few guys that have broken stock out puts doing 10psi boosted launches. And a good friend of mine had a truck running close to 600hp and his stock input was holding 25psi boosted launches without breaking. That trans is actually in my truck now, and I replaced the input when I had it out. But that shaft looked fine, not even any minor stress cracks. However I wouldn't recommend that to anyone. If you can only afford 1 do the input. But I wouldn't do a boosted launch on a stock shaft.
I do think Dazed is right though about the original topic. If we're only talking locked shifts and not racing, and not huge power, then an input is all that is needed.
2000 2500 reg. cab 4x4 auto 577hp
09 6.7L QC LB stick, 4x4.
TOTAL PERFORMANCE DIESEL 707-545-FUEL (3835)