Cylinder Heads

Cometic LS Gen III/IV 4.040 Bore 4-Bolt DST Head Gasket C15740-071 LS 4.040" Bore. 0.071" Compressed Thickness DST is the next evolution of Cometic's proven Multi-Layer Steel and MLX stopper designs. Dual Stopper Technology combines dual integrated,...

Cometic LS Gen III/IV 4.040 Bore 4-Bolt DST Head Gasket C15740-063 LS 4.040" Bore. 0.063" Compressed Thickness DST is the next evolution of Cometic's proven Multi-Layer Steel and MLX stopper designs. Dual Stopper Technology combines dual integrated,...

Cometic LS Gen III/IV 3.940 Bore 4-Bolt DST Head Gasket C15739-071 LS 3.940" Bore. 0.071" Compressed Thickness DST is the next evolution of Cometic's proven Multi-Layer Steel and MLX stopper designs. Dual Stopper Technology combines dual integrated,...

Cometic LS Gen III/IV 3.940 Bore 4-Bolt DST Head Gasket C15739-063 LS 3.940" Bore. 0.063" Compressed Thickness DST is the next evolution of Cometic's proven Multi-Layer Steel and MLX stopper designs. Dual Stopper Technology combines dual integrated,...

ARP 2000 Pro Series GM LS1 Head Bolt Kit 234-3601 - 1997-2003, Hex These ARP Pro Series Head Bolts are made of ARP2000 (220,000 psi tensile strength) material and utilize a hex head. They are cold-forged and heat treated prior to thread rolling and...

LSXceleration Titanium 8mm x 2.165 LS Intake Valve +0.500 Long   Titanium LS Valves 2.165" Head x 8mm Stem x 5.450" OAL x 0.290" Tip Features: Fully Machined Surface Swirl Polished Undercut Stem Titanium  Chromemoly...

Earl's LS Steam Vent Adapters LS9806ERL (One) -4 single out & (One) -4 Dual Out Vent Adapters Another first from Earls are the adjustable LS steam tube adapters. The original GM brazed vent tube manifold does not take into consideration the...

Cometic LS Gen IV Small Block 4.165 Bore MLS Head Gasket RHS C15503-052 4.165" Bore, 1/2" and 3/8" Studs, RHS MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel. The...

Cometic LS Gen IV Small Block 4.165 Bore MLS Head Gasket LHS C15502-052 4.165" Bore, 1/2" and 3/8" Studs, LHS MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel. The...

LSXceleration XF1 Cathedral Port 245cc/62cc 11° CNC Cylinder Heads - Stainless Intake, Inconel Exh, 0.660" Lift, Titanium Retainers 15-162233-2 6-bolt Cathedral Port CNC Cylinder Head Pair w/ Billet Rocker Stands.  Features: 6 bolt...

LSXceleration XF1 Cathedral Port 245cc/62cc 11° CNC Cylinder Heads - Stainless Intake, Inconel Exh, 0.660" Lift, Steel Retainers 15-162231-2 6-bolt Cathedral Port CNC Cylinder Head Pair w/ Billet Rocker Stands.  Features: 6 bolt...

LSXceleration XF1 Cathedral Port 245cc/62cc 11° CNC Cylinder Heads - Stainless Intake, Stainless Exh, 0.660" Lift, Titanium Retainers 15-162223-2 6-bolt Cathedral Port CNC Cylinder Head Pair w/ Billet Rocker Stands.  Features: 6 bolt...