PRC 260cc LS3 Aftermarket Heads, 68cc, Hollow-Stem Intake Valves, TSP .660″ Dual Spring Kit w/ Ti Retainers

PRC 260cc LS3 Aftermarket Heads, 68cc, Hollow-Stem Intake Valves, TSP .660″ Dual Spring Kit w/ Ti Retainers

All Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology!

MADE IN THE USA!!
CAST IN THE USA!!
MACHINED IN THE USA!!

PRC LS3/L92/L99 Cylinder Head Features

• NEW PRC 13-Degree Valve Angle LS3 Castings
• Improved piston-to-valve clearance for extra compression & larger camshafts
• Smaller than stock intake port volume for improved port velocity
• Stainless steel hollow stem 2.185″ intake valves & stainless steel 1.60″ exhaust valves
• Integrated rocker pedestals
• TSP .660″ Spring Kit with PAC Valve Springs & Titanium Retainers
• CHE Bronze Guides
• Completely assembled in the USA
• 68cc combustion chambers

Performance Overview

PRC cylinder heads are extensively researched and tested. These aftermarket LS3 castings flow significantly more than a GM ported casting while keeping port sizes smaller for improved port velocity. The result is smaller-than-stock LS3 ports that move more air than any other LS3 cylinder heads.

The 13-degree valve angle allows higher compression and larger camshafts thanks to additional piston-to-valve clearance.

Flow Data (CFM)

With all PRC cylinder heads, quality and performance are our top priorities. You will not find a better-performing set of cylinder heads at this price (cost is for the pair). Contact a sales consultant for questions or to discuss your specific application.