63240 PWHeads LS3 Style 248cc Aluminum Cylinder Heads Bare (pair) Fits Chevrolet Gen III LS1/LS2/LS6 LSx 3.90" bore
Performance World 63240 PWHeads LS3 Style 248cc Aluminum Cylinder Heads Bare (pair) Fits Chevrolet Gen III LS1/LS2/LS6 LSx 3.90" bore
 
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LS3 Style 11 Degree Chevrolet heads designed to fit Gen III LS1/2/6 3.90" bore engines. 248cc intake runners, 69cc combustion chambers. 2.08" intake and 1.60" exhaust. Machined for 1.55" springs. Raised valve cover rails, 6-bolt per cylinder design (Fits LSX blocks too). Includes rocker arm rails for use with LS3 offset (OE style) rocker arms. SEE SPECIAL TECHNICAL NOTES REGARDING ROCKER ARMS. Manufactured from A356-T6 aluminum. Each pair comes with a detailed flow sheet. Sold bare and ready for assembly. Pair. Download Data here - DOWNLOAD
Everyday Low Price: CDN $1,559.99

Stock Status:In Stock

Product Code: 63240
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Description Technical Specs
 
LS3 Style 11 Degree Chevrolet heads designed to fit Gen III LS1/2/6 3.90" bore engines. 248cc intake runners, 69cc combustion chambers. 2.08" intake and 1.60" exhaust. Machined for 1.55" springs. Raised valve cover rails, 6-bolt per cylinder design (Fits LSX blocks too). Includes rocker arm rails for use with LS3 offset (OE style) rocker arms. SEE SPECIAL TECHNICAL NOTES REGARDING ROCKER ARMS. Manufactured from A356-T6 aluminum. Each pair comes with a detailed flow sheet. Sold bare and ready for assembly. Pair. Download Data here - DOWNLOAD
Optional Parts
  • Intake Valves: PW 360043
    Exhaust Valves: PW 360048
    Viton Valve Seals: PW 360488
    Spark Plugs: Champion RC12YC or equivalent

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 1 Write a review »

  0 of 0 people found the following review helpful:
 
5 of 5 2 thumbs up!! November 21, 2024
Reviewer: Barrett Nelson from Warren, MB Canada  
These heads actually have 63cc chambers, not 69 like the write up says.
These heads are amazing performers, and are high quality castings!
I HIGHLY recommend them!!!

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