C7 ZR1/LT5 Supercharger Boost Calculator

Wondering what altering your upper and lower pulleys will do to your boost levels on your 2.65L LT5 supercharger? Apply the following boost calculator/estimator as a preliminary guide to understand how to adjust your boost to match your preferred power level.

The 2.65L LT5 supercharger comes standard in the 2019 C7 Corvette ZR1 and is an absolute beast!

Keep in mind, boost levels are subject to numerous variables (including temperature and humidity), and this estimation is merely based on a linear mathematical correlation between stock boost and upper/lower pulley modification. This calculation assumes NO OTHER MODS apart from pulleys. Any pulley modifications will necessitate a tuner to optimize your aftermarket modifications.

We highly recommend GripTec upper pulleys for your ZR1/LT5.

Quick FAQ

Q: What's the stock boost level of the 2019 C7 ZR1 blower? A: ~13.96 PSI

Q: What's the stock 2019 C7 ZR1 blower size? A: 2.65L

Q: What's the stock 2019 C7 ZR1 upper pulley diameter? A: 3.30"

Q: What's the stock 2019 C7 ZR1 lower pulley diameter? A: 8.07"