ZZP 3800 150# Valve Springs ATS-V A smaller pulley has less

A smaller pulley has less surface for the belt to grip

EQUINOX (2010 - 2012)

overall power) larger injectors may be required

here are some tips from Denso http://densoiridium

We use these with all rebuilds including TEP and healthy stock low mileage transmissions

ZZP 3800 150# Valve Springs ATS-V A smaller pulley has lessSafely increasing cam lift or maximum engine RPM will require new valve springs. For example on the 3800 we use LS1 "beehive" valve springs which means that when running new springs you will also need our ZZP retainers. These 150# springs are a culmination of our dedication to optimizing the 3800 valvetrain and increasing horsepower since the early 2000s. With manufacturing and parts availability in todays automotive industry, now more than ever we