The 5.3L uses a Roll Master billet timing set with a Torrington bearing, and an LS2-style chain damper. Though the lower compression might make them attractive for the turbo (or blower) crowd, there is a big gap in power that must be overcome before the 317s can start making more power than the standard 706s. In addition to these applications, this port design can be found on Cadillac CTS-V models and the LS9 in the Corvette ZR1, giving further evidence of its exceptional quality and power output potential. The LC9 was the last of the LS base truck 5.3s any 5.3 for a truck after the LC9 is a newer version Of the old LS called LT with direct injection. This further improves airflow and power output from your engine without compromising efficiency or torque production levels. The 799 LS heads have a smaller combustion chamber of 64cc. If you are changing the pistons, look for the Gen IV heads to get the airflow and the compression bump at the same time. Lets talk about bottom-end upgrades. Inasmuch as porting to 799 heads comes with an advantage of increased horsepower due to increased compression, you must ensure to consider both the pros and cons before swapping the cylinder heads. This makes it ideal for those who want to reduce the weight of their vehicles without having to compromise on power or performance. In 2008 and 2009, Chevy also had a simpler 5.3L engine designated the LH8, which can be identified by the letter L in the 8th digit of the VIN. The Gen III block can be iron or aluminum, and you will see 4.8/5.3L cast into the front of the block. It produces an impressive 320 horsepower and 340 lb-ft of torque from its factory settings. Spring life isnt a problem because trucks generally dont spend a lot of time at high rpm. Rxmechanic.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to Amazon.com. What heads came on LQ4? If youre asking, how much are 799 heads worth? The cylinder heads offer one of the best flows you can get from top-notch cylinder heads in the automotive industry.
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