WebFeb 9, 2013 · If you are comparing GM castings then a cathedral port like a 243 will need to be ported to match a stock LS3 on the intake. They both benefit from porting though as the exhaust is lacking in stock form on both castings. The LS3 intake flows around 320cfm in … WebAug 22, 2013 · That is a good gain for just the cost of your labor. Should easily hit over 400ft-lbs, it will be tough to hit 450hp I think, might get close. Mine made 412hp 417ft-lbs with stock intake manifold and heads with a smaller cam, but was on a hot tune and dual 3" exhaust. 2wd Stock Bottom End Record 10.51 635 rwhp.
243/ 317/ 799 CNC Cylinder Head Porting Service - Hooper
Web243/ 317/ 799 CNC Cylinder Head Porting Service. $ 900.00 – $ 1,418.99. Valves. Choose an option Stock Manley 2.02 & 1.570. Add a Spring Kit? d and d wall art
Surprising HP Numbers From Our Stock LS Cylinder Head Test
WebExpedited Core Exchange - We will ship you a set of CNC ported heads fresh out of the machine and set up to your cam specs once the order is placed. Once your usable cores … 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 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 d and d warforged colossus