Im buying a zex wet kit from my friend in a few weeks. He has a 75 100 and 125 shot. I know i dont want to do a 125 but im getting mixed opions on the 75 and 100 shot. My car has 70k on it i dont know how much of a difference that makes. So what do you guys think

thanks

 

my '89 notch w/ a 75 shot went from 13.20's to 12.50's
my '90 vert automatic went from 15.10's to 13.60's on a zex 100 shot

both those cars had 100k+ b4 i sprayed them......70k is nothing.

125 is safe for you, but personally i won't do it. 100 is perfect , and lasts much longer compared to 125 for little bit more gain...the big gain is the frst 75-100 after that...a stock motor doesn't flow enough to see the gains that would get on ported heads and intake.

it's fun as hell....i'd do it.

 

100 shot = safe
75 shot = safer
smoking someone's *** with a boost of nitrous = priceless

 

I was spraying 250 through a nozzle until I pulled the motor at 148k miles. It had no problems when it was pulled. The GT I just bought saw 200-225hp through 2 stages until the motor lost oil pressure at 250k+ miles. But 5.0 > 4.6. I wouldn't try that on a stock modular bottom end.