19166977 - CPP LSX454 LS7 Bare Cylinder Head

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Availability: Item has been replaced by Part number 19354240



Extending the performance range of the LSX platform are GM Performance Parts? new, six-bolt LSX cylinder heads. Many are c apable of flowing more than 400 cfm and their six-bolts-percylinder clamping design gives them bomb-proof strength. Your horsepower-building potential is nearly unlimited with LSX ends. These aluminum masterpieces of performance feature port and chamber designs based on popular and performance-proven production-style heads, such as the L92 and LS7 heads. They are easily identified by the engraved LSX logo on the ends. All LSX heads are made of 356- T6 aluminum and feature a thick, 5/8" thick deck that allows plenty of room for builder-specified combinations.

Additional features include:

  • Uses 11mm (10) and 8mm (13) head bolts (not included)
  • Accommodates production valvetrain components (except for Drag Race and Circle Track heads)
  • Includes premium beehive-type valve springs (except for Drag Race and Circle Track heads)
  • Extra material cast in the port areas to accommodate professional porting
  • Valve guides for 8mm valve stems
  • Racing-specific LSX-DR (Drag Racing) and LSX-CT (Circle Track) heads feature raised runner designs and other unique features designed to maximize performance at the track.

LSX Street Heads

Four LSX street head configurations are offered: The LSX-LS7 head, the LSX-LS3 head, the LSX-LS9 head and the LSX-L92 Small Bore head. The LSX-L92 head features smaller combustion chambers that are compatible with smaller-bore LS1 and LS6 engines. The street heads accommodate valve springs with up to 1.55" diameter bases, but can be machined for larger springs.

19201806 LSX-LS7 Cylinder Head Features:

  • 6-bolt per cylinder bolt pattern
  • LS7 style rectangle port design
  • 12 valve angle
  • Requires a minimum 4.100" bore for valve clearance
  • 270cc "as-cast" intake ports, 85cc "as-cast" exhaust ports
  • 70cc "as-cast" combustion chambers

Application List



  • 19166977
  • 19166977
  • Chevrolet Performance Parts
  • Item has been replaced by Part number 19354240
  • New


Shipping Information

  • Item Requires Shipping
  • 30.0 lbs.
  • W10.0000” x H10.0000” x L26.0000”

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