This head casting originally came on the 5.7L LS6 Engine found in 01-04 C5 Z06 Corvette and 04-05 CTS-V. It was then used on the 6.0L Aluminum Block engine (most commonly known as the LS2) found in, 05-07 C6 Corvette’s, 05-06 GTO, 06-07 CTS-V, 06-09 Trailblazer SS, 05-06 SSR and GMT900 Hybrid SUVs and Pickups. Additionally, this head can be found on the front wheel drive 5.3L LS4 from the 05-08 Grand Prix GXP, 06-10 Impala SS and the 06-10 Monte Carlo SS. Meanwhile, many Gen III and Gen IV 4.8L and 5.3L LS based truck engines also employ these heads. These castings have cathedral style intake ports.
Guaranteed no cracks - machining highly recommended.
Heads are assembled - no rocker arms included.