Cylinder Heads

LSXceleration 4.8/5.3/5.7L Small Bore LS9 MLS 7-Layer Head Gasket 14-22034 3.940" bore x .055" thickness x 7-layer MLS.  This head gasket allows small bore engines to have the same sealing power as the LS9 head gasket. It is essentially a smaller...

LSXceleration Stainless Steel 8mm x 1.550 LS Exhaust Valve Set 15-21550-8 Stainless Steel LS Valves 1.550" Head x 8mm Stem x 4.915" OAL x 0.160" Tip x 45 degree valve seat angle Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl...

LSXceleration GM LS3 MLS 5-Layer Head Gasket Set 14-10046-2 4.094" (104mm) bore x .052" (1.33mm) thickness x 5-layer MLS. Same as Chevrolet Performance 12610046.    

LSXceleration GM LS9 MLS 7-Layer Head Gasket Set 15-22033-2 4.100" bore x .053" thickness x 7-layer MLS. Made in Germany.    

LSXceleration Stainless Steel 8mm x 2.000 LS Intake Valve Set 15-22000-8 Stainless Steel LS Valves 2.000" Head x 8mm Stem x 4.870" OAL x 0.160" Tip x 45 degree seat angle Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl...

Stock Replacement Gen V L83 1.556 Exhaust Valve

Chevrolet Performance Gen V L83, L86, LT1, LT4 Head Bolt 11546959 19 needed per engine

Cometic LS 3.810 Bore MLS Head Gasket C15361-040 LS 3.810" Bore. 0.040" Compressed Thickness MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel. The embossed outer layers...

LSXceleration Inconel 8mm x 1.600 LS Exhaust Valve +0.500 Long   Inconel LS Valve 1.600" Head x 8mm Stem x 5.450" OAL x 0.290" Tip Features: Hardened Stem Tip Ideal for Extreme Duty and Turbo Applications Chrome Plated Stem Fully Machined...

Stock Replacement Gen V L83 1.928 Intake Valve  

LSXceleration GM LS7 MLS 3-Layer Head Gasket 14-82179 4.153" (105.5mm) bore x .052" (1.33mm) thickness x 3-layer MLS. Same as Chevrolet Performance 12582179.    

LSXceleration LS1/LS2 Billet Rocker Arm Stand 15-LS1RS Rocker arm stand for OEM LS Cathedral Port Heads. This billet rocker stand replaces GM #12552203. Features: 6061 aircraft grade aluminum Made in the USA