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Looking for the best performing cylinder head and manifold package on the market today at a fraction of the cost, look no further! Through extensive dyno testing and flow bench research, this new package builds on GM's new technology, SLP's L92 cylinder heads are surfaced milled and come with a CNC'd finished chamber. The combustion chambers are set at 64cc's (stock 70.2cc) and come with SLP Valve Springs (SLP# 53003) which are set to the proper install height and titanium retainers (SLP# 53104). Also, included are eight L92 offset 1.7 intake rocker arms and two L92 rocker arm pedestals.

NOTES: This cylinder head and manifold package is designed for drive by wire vehicles. SLP/L92 Heads can only be used on LS based engines with a 4.000" bore or larger. Requires installation kit # 12507 for proper installation and because of the larger intake valve, piston to valve clearance should be checked prior to installation.