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Cylinder Heads - Rectangle Port LS2 LS3
LS2 LS3 Rectangle Port Cylinder heads. From replacement to CNC ported high performance, Total Performance has a LS Rectangle Port Cylinder head option for you.
Scroll down & View our range below, if you cant see anything that suits or need more information, please contact us.
Boost-Ready Rectangle port, LS3 Cylinder Heads – Built for Turbo & Supercharged Applications. As cast or CNC ported offerings.
Our LS3 cylinder heads are available fully assembled and configured specifically for boosted engines. These are not generic shelf heads — they are built with component selection and durability under boost as the priority.
Each assembled Turbo LS3 Boost ready cylinder head is fitted with these high quality components:
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PAC valve springs chosen for stable valve control under boost, higher spring rates & seat pressure.
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Ferrea valves, including Inconel exhaust valves for high EGT resistance & temperatures.
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Quality retainers, race machined locks, and seals matched to the spring package
These components are selected to handle the increased cylinder pressure, heat, and exhaust gas temperatures common in turbocharged and supercharged LS3 builds, where standard LS3 valve and spring packages can become a reliability limit.
Our LS3 cylinder head range suits:
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Turbo LS3 engines
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Supercharged LS3 engines
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High-power street builds
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Street/strip and track applications
If you’re building a turbo or blown boosted LS3 and want assembled heads with proven, boost-ready components, our range is designed to remove guesswork and improve long-term reliability. Call or stop in and visit us today.
670HP 265cc LS2 LS3 L92 RECTANGLE PORT CYLINDER HEADS - 15 deg valve angle - PAIR 265cc Runner Bare
670HP - BARE - No parts
670hp Boosted LS3 Cylinder Heads 265cc LS2 LS3 L92 Rectangle Port, Assembled, Ferrea Valves, Proline
Boosted Application - 0.670" Max Lift - Ferrea Valves
670hp LS3 Cylinder Heads 265cc LS2 LS3 L92 Rectangle Port, .740" Max lift, Assembled with Stree
STREETLINE PAC Dual Valve Spring kit - 0.740" Max Lift
670hp LS3 Cylinder Heads 265cc LS2 LS3 L92 Rectangle Port, Assembled with Proline RPM Springs (PAC)
High RPM PAC Dual Valve Spring kit - 0.670" Max Lift
700 HP, Assembled High RPM Springs, LS3 L92 RECTANGLE PORT 6 BOLT CYLINDER HEADS LS7, 11 deg, *PAIR*
Flows 700 HP, 6 Bolt, 11 deg, High RPM Springs
700HP LS2 LS3 L92 RECTANGLE PORT 6 BOLT CYLINDER HEADS LS7 spacing - 11 deg valve angle - Bare Pai
Flows 700 HP + 6 BOLT HEADS 11°
700 HP, Assembled LS3 L92 RECTANGLE PORT 4 BOLT CYLINDER HEADS LS7 Valve Spacing, 11° deg, Pair
PAIR ASSEMBLED 4 BOLT HEADS 11° - STEEL RETAINERS
700hp GM LS2 LS3 L92 RECTANGLE PORT 4 BOLT CYLINDER HEADS LS7 Valve spacing - 11 deg valve angle - P
4 BOLT HEADS 11° - BARE HEADS
ASSEMBLED GM LS3 CNC SQUARE PORT HEADS 260CC RUNNER - PAIR LS7 VALVE SPACING 11°
ASSEMBLED 6 BOLT HEADS 11° LS7 VALVE SPACING
GM LS3 CNC SQUARE PORT Cylinder Heads, 276CC RUNNER Bare Pair (CNC ported in Australia)
LS3 CNC Ported Cylinder heads - NEW - Outright.
