243 Heads: All About 243 LS Heads & Their Application
Initially, General Motors made seven different versions of the LS engine, and the majority of them had varying heads. The head names are indicated by the stamp on the valve cover that shows the three-digit head number. The 243 heads were put on the LS6 engines. Initially, the heads were made for C5 Corvettes, used from 2001 to 2006. The LS6 was also used in some Camaros and Pontiac GTOs. The 243 heads are cast out of aluminum alloy, and they feature larger intake and exhaust ports compared to other heads. They also have higher-lift camshafts, which allows for greater airflow. The 243 heads come with 1.7-ratio rockers responsible for opening and closing the intake and exhaust valves. The configuration is different from the 1.8 ratios found on most other LS heads. The main benefit of this is that it allows for greater lift, which results in more airflow and more power. If you want to buy 243 LS heads, Allied Motor Parts is just the place for it. Get in touch...