Quote:
Originally Posted by Joshinator99
Your 75mm (2.95”) upper and 9.45 lower was netting you 20,822 RPM blower speed at 6500 RPM and a pulley ratio of 3.20 which is aggressive. I’m not surprised on the belt slip with the stock LT4 tensioner. Your new combo of 80mm (3.15”) upper and 10.35” is even more aggressive at 3.29 ratio and 21,357 RPM blower speed. In my experience, that pulley change won’t fix your problem.
You might want to look at TooHighPSI’s LT5 tensioner and 10-rib upgrade which I run on my combo (18 psi). The LT5 tensioner has more tension and greater travel…just a better piece across the board.
Hope that helps.  |
Yes, I have that upgrade. It's their 10.35 (28%) lower and 10 rib kit with a griptec 80mm upper