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PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

Racing Flag

PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

BIG-BLOCK ALUMINUM BOWTIE STREET CYLINDER HEADS

19331422

BOWTIE OVAL-PORT ALUMINUM CYLINDER HEAD, BARE

  • Fully machined
  • Semi-finished for 2.190"/1.880" valves
  • Bronze guides can be finished to 11/32" or 3/8"
  • 290-cc high-velocity oval intake ports
  • 110-cc exhaust ports
  • 110-cc semi-open combustion chambers

19331424

BOWTIE OVAL-PORT ALUMINUM CYLINDER HEAD ASSEMBLY

  • Completely assembled with 2.190"/1.880" 11/32" stem valves
  • 290-cc oval intake ports
  • 110-cc exhaust ports
  • 110-cc combustion chambers

19331425

BOWTIE OVAL-PORT ALUMINUM CYLINDER HEAD ASSEMBLY

  • Completely assembled with 2.250"/1.880" 11/32" stem valves
  • 290-cc oval intake ports
  • 110-cc exhaust ports
  • 110-cc combustion chambers

19331427

BOWTIE RECTANGULAR-PORT ALUMINUM BARE CYLINDER HEAD

This NHRA-legal aluminum cylinder head is a replacement for the L88 Big-Block cylinder heads used on 1968-1971 Corvettes and 1969 Camaros.

  • Aluminum performance cylinder head
  • 315-cc rectangular intake ports
  • Replacement head for P/N 14011076
  • Machined for 2.250"/1.880" 11/32" valve stems
  • 110-cc exhaust ports
  • 118-cc combustion chambers

19331426

BOWTIE RECTANGULAR-PORT ALUMINUM BARE CYLINDER HEAD

  • Bare aluminum performance head
  • Machined for 2.250"/1.880" valves
  • 300-cc rectangular intake port
  • 110-cc exhaust port
  • 118-cc combustion chambers

19331428

BOWTIE RECTANGULAR-PORT ALUMINUM CYLINDER HEAD ASSEMBLY

  • Aluminum performance head
  • Completely assembled with 2.250"/1.880" 11/32" stem valves
  • 300-cc rectangular intake port
  • 110-cc exhaust port
  • 118-cc combustion chambers
  • Uses bare head P/N 19331426

19331429

BOWTIE 572/620 CYLINDER HEAD ASSEMBLY

  • Aluminum head assembly
  • Used in the 572/620 Chevrolet Performance crate engine
  • Completely assembled with 2.250"/1.880" 11/32" stem valves
  • Valve springs for hydraulic roller cams for up to .632" lift
  • 310-cc rectangular intake port
  • 118-cc exhaust port – raised 5/8"
  • 118-cc combustion chamber
  • Not recommended for engines smaller than 572 cid

19331430

BOWTIE 572/720R CYLINDER HEAD ASSEMBLY

  • Aluminum racing head assembly
  • Used in the 572/720R Chevrolet Performance crate engine
  • Completely assembled with 2.250"/1.880" 11/32" stem valves
  • Mechanical roller valve springs – not for use with hydraulic roller cams
  • Good to .720" valve lift
  • 310-cc rectangular intake port
  • 118-cc exhaust port – raised 5/8"
  • 118-cc combustion chamber
  • Not recommended for engines smaller than 572 cid

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Visit www.chevroletperformance.com/emissions for more details.