Are there any upgrades for the LH6 engine?

Below are more upgrades that will improve the performance of the LH6 engines. As we mentioned earlier, the engine came with AFM—which is known to fail. If your engine is in good running condition now, you can install an AFM disabler. If a lifter is already failing, it’s best to go with an AFM delete kit.

What should idle quality be on LH6 5.3L engine?

To maximize torque in the mid-range, manufactures close the intake valve at about 40 degrees (@.050 in.) after bottom dead center and alter the intake valve opening to set the idle quality. For a good idle and low end, you’ll often see the 5.3L truck cams in the 204-215 @ .050 range if it’s still a daily driver.

Can a LH6 engine get a nitrous boost?

In general, the LH6 will see boost or nitrous before any serious head work. Before we get into the power adders, there are a couple things to address: A 4-corner steam kit reduces hot spots that cause the rings to butt and snap the piston’s ring lands.

What kind of chain damper does a LH6 use?

The engine also had 799 or 243 casting heads which are closely related to the LS6. It was a crossover engine which meant it shared the old Gen. 3’s 24X reluctor crank and plastic wedge-style chain damper in 2005-06 before going to 58X and a spring loaded tensioner in 2007

What kind of reluctor does a LH6 have?

All 2005-06 LH6 engines had the 24x reluctor and 1x cam gear, like the Gen. 3 engines. Everything produced in 2007 or later had the standard Gen. 4 58x reluctor and 4x cam gear. Was this answer helpful?

What’s the difference between the LH6 and the LC9?

The LC9 was introduced in 2007. Originally, it was a flex fuel version of the LH6. In 2010, the LC9 was upgraded with Variable Valve Timing (VVT) and replaced the LH6. It was available in GM pickups and SUVs until 2014. The LC9 was also known as the Vortec 5300. The LH8 was introduced in 2008 as the V8 option for the Hummer H3.

Are there any upgrades for the LH6 engine?