Great cylinder-head airflow is the key to the LS-Series' exceptional performance. From the LS6 head for smaller displacement engines to the LS7 heads for 427ci and larger engines, GMPP's aluminum heads ensure maximum airflow without compromises. GMPP's heads are so good the most professional builders use them as straight bolt-ons without any further machine work. Many of the GM Performance Parts heads use premium machining and materials, including CNC finishing and porting, along with lightweight hollow-stem valves, sodium-filled exhaust valves and lightweight titanium intake valves (on some engines).
Aluminum LS Family Head Technical Notes:
- Manufactured from 319-T5 Aluminum Alloy
- High-Efficiency Combustion Chambers
- Symmetrical Intake and Exhaust Ports
- Angled Spark Plugs
- 15º Valve Angle (except LS7)
- Bolt-Down-Type Rocker Arms
- Center-Bolt Valve Cover Hold-Downs
- Fits Gen III and Gen IV Small Blocks Only (expect 4.8L & 5.3L Engines)
- Aluminum Performance Head
- 210cc Cathedral-Port Intake Ports
- 64.5cc Combustion Cambers
- 15º Valve Angle
- Part # 12629094
Head Specs
- Aluminum Performance Head
- 2.000" Solid Stem Intake Valve
- 1.550" Solid Stem Exhaust Valves
- 0.570" Max Valve Lift
- 210cc Cathedral-Port Intake Ports
- 70cc D-Shaped Exhaust Ports
- 64.5cc Combustion Cambers
- 15º Valve Angle
- Part # 12576063
Assembly Includes
- Aluminum Head
- Intake Valves
- Exhaust Valves
- Valve Springs
- Valve Locks
- Valve Spring Retainers
- Intake Valve Stem Seals
- Exhaust Valve Stem
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Head Specs
- CNC-Ported Aluminum Head
- 2.000" Hollow Stem Intake Valve
- 1.550" Sodium-filled Exhaust Valves
- 0.570" Max Valve Lift
- 250cc Cathedral-Port Intake Ports
- 85cc D-Shaped Exhaust Ports
- 65cc Combustion Cambers
- 15º Valve Angle
- Part # 88958622
Assembly Includes
- Aluminum Head
- Intake Valves
- Exhaust Valves
- Valve Springs
- Valve Locks
- Valve Spring Retainers
- Intake Valve Stem Seals
- Exhaust Valve Stem Seals
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Head Specs
- CNC-Ported Aluminum Head
- 2.000" Hollow Stem Intake Valve
- 1.550" Sodium-filled Exhaust Valves
- 0.570" Max Valve Lift
- 250cc Cathedral-Port Intake Ports
- 85cc D-Shaped Exhaust Ports
- 65cc Combustion Cambers
- 15º Valve Angle
- Part # 88958665
Assembly Includes
- Aluminum Head
- Intake Valves
- Exhaust Valves
- Valve Springs
- Valve Locks
- Valve Spring Retainers
- Intake Valve Stem Seals
- Exhaust Valve Stem Seals
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Head Specs
- Aluminum Performance Head
- 2.000" Solid Stem Intake Valve
- 1.550" Solid Stem Exhaust Valves
- 0.570" Max Valve Lift
- 250cc Cathedral-Port Intake Ports
- 70cc D-Shaped Exhaust Ports
- 64.5cc Combustion Cambers
- 15º Valve Angle
- Part # 88958765
Assembly Includes
- Aluminum Head
- Intake Valves
- Exhaust Valves
- Valve Springs
- Valve Locks
- Valve Spring Retainers
- Intake Valve Stem Seals
- Exhaust Valve Stem
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- Aluminum Performance Head
- 260cc Rectangular (L92) Intake Ports
- 70cc Combustion Cambers
- 15º Valve Angle
- Part # 12629064
Head Specs
- Aluminum Performance Head
- 2.165" Solid Stem Intake Valve
- 1.590" Solid Stem Exhaust Valves
- 0.510" Max Valve Lift
- 260cc Rectangular-Port Intake Ports
- D-Shaped Exhaust Ports
- 70cc Combustion Cambers
- 15º Valve Angle
- Part # 12629064
Assembly Includes
- Aluminum Head
- Intake Valves
- Exhaust Valves
- Valve Springs
- Valve Locks
- Valve Spring Retainers
- Intake Valve Stem Seals
- Exhaust Valve Stem Seals
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- Aluminum Performance Head
- 260cc Rectangular (L92) Intake Ports
- 70cc Combustion Cambers
- 15º Valve Angle
- Part # 12629051
Head Specs
- Aluminum Performance Head
- 2.165" Hollow Stem Intake Valve
- 1.590" Solid Stem Exhaust Valves
- 0.570" Max Valve Lift
- 260cc Rectangular-Port Intake Ports
- D-Shaped Exhaust Ports
- 68.4cc Combustion Cambers
- 15º Valve Angle
- Part # 12629063
Assembly Includes
- Aluminum Head
- Intake Valves
- Exhaust Valves
- Valve Springs
- Valve Locks
- Valve Spring Retainers
- Intake Valve Stem Seals
- Exhaust Valve Stem Seals
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- Aluminum Performance Head
- 270cc Rectangular (L92) Intake Ports
- 70cc Combustion Cambers
- 12º Valve Angle
- Part # 12578450
Head Specs
- Aluminum Performance Head
- 2.200" Titanium Intake Valve
- 1.610" Sodium-filled Exhaust Valves
- 0.570" Max Valve Lift
- 270cc Cathedral-Port Intake Ports
- 85cc D-Shaped Exhaust Ports
- 70cc Combustion Cambers
- 12º Valve Angle
- Part # 12578449
Assembly Includes
- Aluminum Head
- Intake Valves
- Exhaust Valves
- Valve Springs
- Valve Locks
- Valve Spring Retainers
- Intake Valve Stem Seals
- Exhaust Valve Stem Seals
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*Prices Subject to Change*
Southern Performance Systems, Inc
Postal Address:
6050 Peachtree Parkway
Suite 240-207
Norcross, GA 30092
Phone # (678) 482-0866
Warehouse Visits by Appointment Only
