The 243 heads are cast out of aluminum alloy, and they feature reshaped intake ports and D-shaped exhaust ports offering high performance and efficiency. They also have higher-lift camshafts, stronger valve train, and other improvements that allow improved airflow, offering greater horsepower. See more The LS6 had a stiff valve train coupled with an aggressive camshaft that made it perfect for the Corvettes at the time. But what makes 243 LS heads special is their ability to fit into … See more The cylinder heads are responsible for housing the intake and exhaust valves. They also have combustion chambers where the air/fuel … See more The camshaft is responsible for converting rotational motion to reciprocal motion. The LS6 engine works with a hydraulic roller-lifter camshaft. Like LS1, LS6 also received 2 … See more The engine management system is responsible for controlling the air/fuel mixture, ignition timing, and idle speed. It does this by using sensors that monitor various engine … See more WebThe 243 heads came on the LS6 engine produced from 2001 to 2006. It was typically found in the C5 Corvette, but it was eventually ported to the LQ4 and LQ9 to meet truck specs. The latter offered 6cc larger combustion chambers to accommodate the working style vs. speed and acceleration.

GPI - LS1 Heads - Gwatney Performance

WebGM's #243 casting is a great cathedral head that has phenomenal potential with the right work applied. Our 218cc CNC work is a good choice for guys who would like a bit more … WebMar 29, 2024 · Introduced in 2008 as the new standard powerplant in the Corvette, the LS3 engine has become a staple in modern domestic high performance. The factory-built motor dished out about 430 horsepower right out of the gate, and the cylinder heads play no small role in that impressive output. The LS3 heads hit the flow bench. opa taxi and tours

Going With The Flow: A Look At Ported Versus Unported LS Heads …

WebAug 20, 2011 · You could bore to the LS1 pistons run them and get a set of ported 243's. Add a Fast 90mm intake, cam, and you have an 400hp iron block LS6. Thats easily a 100K mile motor. For a stock 5.3L port the heads, cam, and a LS6/Fast intake and it might make 400hp on a engine dyno. But would make 300-325hp at the wheels WebGet the best deals for ported 243 heads at eBay.com. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Web243/799 LS CNC Ported Heads. Speed Works has teamed up with Wilkes Performance to bring you the most powerful heads available. We have a few options you can purchase … opatanol routes of administration