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Texas Speed Torquer V4 231/234 Cathedral Port LS Camshaft

The Texas Speed Torquer V4 231/234 camshaft is an aggressive naturally aspirated performance cam designed for cathedral-port LS engines, including LS1, LS2, and LS6 applications. Its 231/234 duration, .629"/.615" lift, and tight 111 LSA deliver a pronounced idle, strong midrange power, and excellent top-end performance.

This cam features an aggressive intake lobe designed to produce strong peak horsepower while bringing power in early enough for a responsive street and strip combination. With the proper supporting modifications, the Torquer V4 is capable of producing approximately 55-60 rear-wheel horsepower.

Camshaft Specifications

Duration @ .050"	231° Intake / 234° Exhaust
Valve Lift	.629" Intake / .615" Exhaust
Lobe Separation Angle	111°
Operating RPM Range	2,200-7,000 RPM
Recommended Compression	10.5:1 or Higher
Required Valve Springs	TSP/PAC .660" Dual Valve Springs
Recommended Stall Converter	3200 RPM or Higher
Recommended Rear Gear	3.23 Minimum; 3.42 or Higher Recommended for Maximum Performance
Custom Tuning Required	Yes

Performance & Driving Characteristics

Category	Details
Estimated Power Gain	Approximately 55-60 RWHP with Proper Supporting Modifications
Idle Quality	Aggressive, Pronounced Lope
Powerband	Strong Midrange with Excellent Peak and Top-End Power
Manual Drivability	Streetable with Proper Tuning; Some Low-RPM Bucking or Surging May Occur
Automatic Drivability	Good Street Manners with a Properly Matched Stall Converter and Tune
Best Use	Aggressive Naturally Aspirated Street and Street/Strip Builds

Actual results will vary based on engine displacement, compression ratio, cylinder heads, intake, exhaust, tuning, drivetrain configuration, and overall vehicle setup.

Fitment

Designed for naturally aspirated LS engines equipped with cathedral-port cylinder heads.

Fitment & Important Notes

TSP/PAC .660" dual valve springs are required due to the camshaft's aggressive intake lobe and .629" intake lift.
A 3200 RPM or higher stall converter is recommended for automatic-transmission applications.
A minimum 3.23 rear gear is recommended, with a 3.42 or higher ratio preferred for maximum performance.
Custom tuning is required for both automatic and manual-transmission vehicles.
This camshaft can fit factory, unmodified cylinder heads; however, piston-to-valve clearance must still be checked during installation.
Manual-transmission vehicles may experience some low-RPM bucking or surging but can remain streetable with proper tuning.
Always verify piston-to-valve clearance, valve spring compatibility, installed height, coil-bind clearance, retainer-to-seal clearance, and valvetrain geometry during installation.

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