![]() ![]() If you don’t want to deal with that, a VVT delete kit isĪn option. In addition, tuning VVT is a little moreĬomplex. If that sounds good, a VVT limiter kit and VVT cam is Not commonly used for all-out racing, VVT widens the powerband in a A cam provides huge bang for yourīuck, but the first thing to decide is whether you want to maintain VVT. Upgrading the LH9 Camshaft and Valvetrainįactory cam is TINY, even by truck standards. Go, make sure to install a colder thermostat toĪre more upgrades that will improve the performance of the LH9 engines. Makes it easier to tune with a bigger cam and injectors later on. Whether you’re towing on low-octane or springing for good fuel, a tuner canĭial the ECM and take it to the next level.ĥ.3L loves to rev, so raising the rev limit and shift points is common. Point, we recommend talking to your chassis dyno tuner and decide on a computer programmer. All these can be done in the garage, but the Problem is that the engine starts to sound REALLY good and owners find Many people, it starts off with a cold air intake and aftermarket exhaust. The Basic Bolt-On Upgrades for LH9Īre the everyday hotrods of the 21 st centuryĪnd you can think of the LH9 as the modern equivalent of the old 327-a Have a downside? Maybe just one because VVT isn’t for everyone. Motors made a bazillion of them which helps keep prices down.įlex fuel injectors will support 450+ horsepower at the wheels. The intake and accessory drive swap over, but a Lingenfelter crank sensor trigger 3 5.7L engines that are getting moreĭifficult to find. Is gaining popularity for several reasons:Īluminum block alternative to older Gen. LH9 5.3L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More.The engine is close siblings with the LMF which shared many of the same features…except the block material. The engine also had 799 or 243 casting heads which are closely related to the LS6. 4 5.3L Aluminum-block engine, so you’re getting the better intake manifold, connecting rods, and ECM. ]Ĭame in GM trucks and SUVs in 2010-‘12 and made between 300 horsepower right Overview of the Gen III/IV LS Engine Family. Note: This LH9 engine upgrade guide is part of a seriesīy a team of LS experts at Summit Racing that we are sharing at OnAllCylinders.įor a primer on the entire LS engine universe, read LS Engines 101: An Introductory ![]()
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