68276 PWHeads Chevrolet LS3 LSx 273cc 15 Degree Rectangle Port Aluminum Cylinder Heads Pair (bare)
Performance World 68276 PWHeads Chevrolet LS3 LSx 273cc 15 Degree Rectangle Port Aluminum Cylinder Heads Pair (bare)
 
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LS3 15 Degree Rectangle Port Chevrolet heads designed to fit LS (4.00") large bore engines. 273cc intake runners, 69cc combustion chambers. 2.165" intake and 1.59" exhaust. Machined for 1.30" springs. 6-bolt per cylinder design (Fits LSX blocks too). Requires OE LS3 rocker arm rails (GM#12600936). Manufactured from A356-T6 aluminum. Each pair comes with a detailed flow sheet. Sold bare and ready for assembly. Pair. Download Data here - DOWNLOAD NOTE: MUST USE THREAD SEALANT ON ROCKER STAND BOLTS AS THEY INTERSECT THE INTAKE PORTS!
Everyday Low Price: CDN $1,249.99

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Product Code: 68276
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Description Technical Specs
 
LS3 15 Degree Rectangle Port Chevrolet heads designed to fit LS (4.00") large bore engines. 273cc intake runners, 69cc combustion chambers. 2.165" intake and 1.59" exhaust. Machined for 1.30" springs. 6-bolt per cylinder design (Fits LSX blocks too). Requires OE LS3 rocker arm rails (GM#12600936). Manufactured from A356-T6 aluminum. Each pair comes with a detailed flow sheet. Sold bare and ready for assembly. Pair. Download Data here - DOWNLOAD NOTE: MUST USE THREAD SEALANT ON ROCKER STAND BOLTS AS THEY INTERSECT THE INTAKE PORTS!
Optional Parts
  • Intake Valves = PW #360050
    Exhaust Valves = PW #360049

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