BTR Turbocharged Stage 2 Cam - LS Engines (226/231 .610/.608 113+4)

Maximize your turbocharged LS build with the Brian Tooley Racing Turbocharged Stage 2 camshaft. Designed specifically for forced induction applications, this versatile cam delivers optimized valve events for turbocharged LS engines. The 226/231 duration and .610/.608 lift with 113+4 LSA provide excellent performance across a wide range of turbo sizes, from budget 7275 setups to big Borg Warner S488 builds.

Key Features:

• 226/231 duration (intake/exhaust) @ .050"
• .610/.608 lift (intake/exhaust)
• 113+4° LSA (Lobe Separation Angle)
• Designed specifically for turbocharged LS engines
• Versatile - works with wide range of turbo sizes
• Optimized valve events for forced induction
• Proven performance on 5.3L and 6.0L cathedral port builds
• Premium BTR quality and engineering

Performance Benefits:

• Turbo-Optimized: Valve events designed specifically for forced induction
• Versatile Turbo Range: Works with small 7275 to big S488 turbos
• Proven Power: Tested and proven on countless turbo LS builds
• Excellent Spool: Optimized for quick turbo spool and response
• Strong Power Band: Delivers power throughout RPM range
• Cathedral Port Optimized: Perfect for 5.3L and 6.0L cathedral port heads
Specifications:
• Brand: Brian Tooley Racing (BTR)
• Part Number: 32631134R1 (New Model)
• Product: Turbocharged Stage 2 Camshaft
• Duration @ .050": 226° intake / 231° exhaust
• Valve Lift: .610" intake / .608" exhaust
• LSA: 113+4° (Lobe Separation Angle)
• Recommended RPM Range: Varies by turbo size and build
• Valve Springs: Upgraded valve springs REQUIRED

Fitment Information:

• Compatible Engines:
• All LS engines with turbocharger (Gen III and Gen IV)
• Optimized For:
• 5.3L LS engines (LM7, L33, LH6, LY5, LC9, etc.) with cathedral port heads
• 6.0L LS engines (LQ4, LQ9, LY6, L76, etc.) with cathedral port heads
• Also Works With:
• 4.8L LS engines with turbo
• LS1, LS2, LS3, LS6 with turbo
• LSX builds with turbo
• Common Applications:
• Turbocharged LS swaps (240SX, RX-7, Miata, etc.)
• Turbo truck builds (Silverado, Sierra, Tahoe, etc.)
• Turbo Camaro, Corvette, GTO, G8 builds

What's Included:

• BTR Turbocharged Stage 2 camshaft (32631134R1)
• Installation instructions

Required Supporting Modifications:

• REQUIRED:
• Upgraded valve springs (BTR or equivalent)
• Pushrods (stock may work, upgraded recommended)
• Gasket set for cam installation
• Professional tuning REQUIRED after installation
• HIGHLY RECOMMENDED:
• Upgraded torque converter (automatic transmission)
• Performance exhaust (headers, downpipe, cat-back)
• Upgraded fuel system for boost levels
• Boost-appropriate turbo and supporting mods

Installation Notes:

• Professional installation STRONGLY recommended
• Requires engine disassembly to access camshaft
• Upgraded valve springs REQUIRED - stock springs will not work
• Degree camshaft for optimal performance
• Professional tuning REQUIRED after installation
• Automatic transmissions require upgraded torque converter

226/231 Duration - Turbo-Optimized:

The Turbocharged Stage 2 features 226° intake and 231° exhaust duration measured at .050" lift. This duration is specifically optimized for turbocharged applications, providing the right balance of cylinder filling, exhaust scavenging, and boost response. The slightly longer exhaust duration helps evacuate exhaust gases efficiently under boost conditions.

.610/.608 Lift - Forced Induction Airflow:

The .610" intake and .608" exhaust lift provide excellent airflow for turbocharged applications. This lift is aggressive enough to support serious power levels while remaining conservative enough for reliable street use. The lift requires upgraded valve springs but doesn't require extensive piston-to-valve clearance work on most builds.

113+4° LSA - Turbo-Specific:

The 113+4° Lobe Separation Angle is specifically chosen for turbocharged applications. The wider LSA helps maintain cylinder pressure under boost, reduces the chance of detonation, and provides a smoother idle compared to tighter LSA cams. The +4 advance helps optimize valve timing for forced induction.

Most Versatile Turbo Cam:

BTR considers the Turbocharged Stage 2 to be the most versatile turbo camshaft on the market today. It's been proven to work excellently with:

• Small Turbos: 7275, GT35, GT37 - excellent spool and response
• Medium Turbos: GT42, S366, S372 - balanced performance
• Large Turbos: S475, S480, S488 - optimized valve events for big power

Cathedral Port Optimization:

The Stage 2 is specifically optimized for cathedral port headed LS engines (5.3L and 6.0L truck engines). The valve events are designed to work with the airflow characteristics of cathedral port heads, making this cam perfect for budget turbo builds using affordable truck engines and heads.

Turbocharged Stage 2 - What to Expect:

• Idle: Mild lope - noticeable but not excessive
• Spool: Excellent turbo spool and response
• Power Delivery: Strong and linear throughout RPM range
• Boost Response: Quick boost buildup and excellent response
• Sound: Aggressive under boost with mild lope at idle
• Drivability: Very streetable with proper tuning

Upgraded Valve Springs REQUIRED:

CRITICAL: This camshaft REQUIRES upgraded valve springs. The stock valve springs are not designed for the lift and duration of the Turbocharged Stage 2 and will cause valve float, poor performance, and potential engine damage. BTR valve springs or equivalent are required for safe, reliable operation.

Professional Tuning REQUIRED:

CRITICAL: This camshaft requires professional tuning after installation. Turbocharged engines require precise fuel and ignition tuning to prevent detonation and ensure safe, reliable operation. Do not boost the engine before proper tuning is complete.

Why Brian Tooley Racing?

Brian Tooley Racing (BTR) has been a leader in LS engine performance for over 15 years. Their turbocharged camshafts are designed, tested, and proven on real-world turbo builds ranging from street cars to dedicated race cars. BTR's turbo-specific cams are optimized for forced induction, providing the best performance and reliability.

Installation Tips:

• Have a professional install the camshaft
• Degree the camshaft for optimal performance
• Install upgraded valve springs (REQUIRED)
• Check piston-to-valve clearance
• Replace timing chain and components while engine is apart
• Have ECU professionally tuned for boost application
• Consider upgraded torque converter for automatic transmissions

Perfect For:

• Turbocharged 5.3L and 6.0L cathedral port builds
• Budget to high-end turbo LS builds (7275 to S488)
• Turbo LS swaps in any chassis
• Street/strip turbo builds requiring versatility
• Anyone seeking proven BTR turbo cam performance

Perfect For: Turbocharged LS builds seeking BTR's most versatile turbo cam with 226/231 duration, .610/.608 lift, and proven performance across wide range of turbo sizes.

Pro Tip: This cam works with everything from small 7275 turbos to big S488s - truly the most versatile turbo cam available.

REQUIRED: Upgraded valve springs and professional tuning are mandatory for turbocharged applications.

Maximize your turbo LS with BTR Turbocharged Stage 2 - 226/231 duration, .610/.608 lift, 113+4 LSA, turbo-optimized, cathedral port proven, versatile.