GrantB

Do people have good luck with on LSx motors? I've got a T1 PS pump, and am purchasing an aluminum ATI damper. They offer 10% and 25% UD. Does anyone know which works best with the LS2/3 water pump? I used a 25% ASP on my H/C LS1, and it seemed to work well, but my new motor is going to be making quite a bit more power.

Thanks for any help.

trackboss

I just did this. 10% underdrive. Its about 6.75" diameter and the a/c is the same. I also did the T1 pump with thier pulley, LS3 wp, and katech belt tensioner. After trying several belts that ATI suggested and then being told they don't know what belt really fits I discovered the stock length belt works. I am assuming the T1 pully is slightly larger than stock. A/C is a 410 belt.

GrantB

Thanks... I am just not sure what RPM range the LS3 water pumps work best in? You always hear about them cavitating at high RPMs, but I've never heard any hard numbers. I'd just try swapping out UD pulleys, but thats a bitch on C5s and as far as I know no one makes different size water pump pulleys.

trackboss

Just ran it this past weekend and no issues with waterpump or otherwise.