Texas Speed Stage 2 Cathedral Stroker Camshaft

The Texas Speed Stage 2 Cathedral Stroker Camshaft is designed for 383 cubic-inch and larger LS engines equipped with cathedral-port cylinder heads. Its 238/253 duration, .644"/.632" lift, and 111 LSA are matched to the airflow demands and increased displacement of naturally aspirated stroker combinations.

Positioned between the more street-oriented Stage 1 and the maximum-performance Stage 3, this cam delivers aggressive midrange and upper-RPM performance for serious street and street/strip builds. Aftermarket cathedral-port cylinder heads and an upgraded intake manifold are strongly recommended to take full advantage of its performance potential.

Developed In-House by Texas Speed

Texas Speed camshafts are developed using an internal lobe-design process that allows our engineering team to match the cam profile to the intended engine displacement, cylinder-head airflow, valvetrain requirements, and operating range.

Camshaft and valvetrain behavior is evaluated through Spintron testing to help verify stability and control throughout the intended RPM range. This process allows Texas Speed to develop purpose-built camshafts for specific engine combinations instead of relying on generic lobe pairings.

Camshaft Specifications

Duration @ .050"	238° Intake / 253° Exhaust
Valve Lift	.644" Intake / .632" Exhaust
Lobe Separation Angle	111°
Intake Centerline	109°
Minimum Recommended Displacement	383 Cubic Inches
Cylinder-Head Type	Cathedral-Port LS
Recommended Combination	Aftermarket Cathedral-Port Cylinder Heads and Intake Manifold
Best Use	Naturally Aspirated Street/Strip and Performance Stroker Builds

Performance & Driving Characteristics

Category	Details
Idle Quality	Very Aggressive Performance Idle
Powerband	Aggressive Midrange with Strong Upper-RPM Performance
Street Use	Performance-Focused Street Manners with Greater Aggressiveness Than Stage 1
Best Combination	383+ CI Naturally Aspirated Engines with Aftermarket Heads, Intake, and Supporting Drivetrain Modifications

Final power output and driving characteristics will vary based on displacement, compression ratio, cylinder-head airflow, intake manifold, exhaust system, tuning, gearing, converter selection, and overall vehicle configuration.

Compare the Cathedral Stroker Camshaft Lineup

The Texas Speed Cathedral Stroker lineup offers three camshaft options for 383 cubic-inch and larger naturally aspirated LS combinations. Each stage increases overall aggressiveness and shifts the combination toward higher-RPM performance.

Camshaft	Specifications	Recommended Use	View Cam
Stage 1	235/250, .644"/.632", 110 LSA	Most Street-Oriented Stroker Option	View Stage 1
Stage 2	238/253, .644"/.632", 111 LSA	Aggressive Street/Strip Performance	Current Camshaft
Stage 3	Specifications Coming Soon	Maximum-Performance Cathedral Stroker Option	View Stage 3

Fitment

GM Gen III and Gen IV LS-based engines
Cathedral-port cylinder heads
383 cubic-inch and larger stroker combinations
Naturally aspirated performance applications

Fitment & Important Notes

This camshaft is designed for 383 cubic-inch and larger LS stroker combinations and is not intended as a general replacement cam for stock-displacement engines.
Aftermarket cathedral-port cylinder heads and an upgraded intake manifold are strongly recommended.
Upgraded valve springs and supporting valvetrain components are required for the .644"/.632" lift and aggressive lobe design.
Custom tuning is required.
Converter, rear gearing, compression ratio, exhaust, and induction requirements will depend on the complete engine and vehicle combination.
This cam is more aggressive than the Stage 1 and should be matched with a performance-focused drivetrain and vehicle setup.
Always verify piston-to-valve clearance, valve spring installed height, coil-bind clearance, retainer-to-seal clearance, pushrod length, and overall valvetrain geometry during installation.