Hi-Torq Street Series Hydraulic Roller Cams

The Philosophy: Torque First, Horsepower Everywhere

The Hi-Torq Street Series cams are designed around the Pontiac V8's natural strengths: its massive displacement and ability to produce tremendous torque.

• Optimized for Street Driving: Unlike race-only cams that sacrifice low-end power for peak RPM numbers, these cams are ground to deliver a broad, flat torque curve that comes on strong right off idle. This makes for incredibly responsive street driving and effortless acceleration in any gear.

• Excellent Drivability: Designed with street manners in mind, these hydraulic roller cams maintain good idle vacuum for power brakes and accessories, and exhibit a smooth, albeit aggressive, idle quality.

• Proprietary Grinds: Butler Performance works closely with leading cam manufacturers (such as COMP Cams) to develop custom lobe profiles, lobe separation angles (LSA), and durations that are exclusive to their Hi-Torq series, ensuring optimal performance for the Pontiac platform.

Key Features and Performance Benefits

• Custom Specifications: Each Hi-Torq cam features unique lift, duration, and LSA specifications meticulously chosen to suit various engine displacements (e.g., $400 \text{ ci}, 455 \text{ ci}$, or $462 \text{+ ci}$ strokers) and compression ratios.

• Hydraulic Roller Advantage: As hydraulic rollers, these cams inherently offer:

  • Aggressive Lobe Profiles: Faster valve opening and closing rates for more "area under the curve" compared to flat tappets, translating to more power.

  • Zero Break-In Worries: Eliminates the critical and failure-prone break-in procedure associated with flat tappet cams, providing superior durability.

  • High RPM Stability: Better valvetrain control at higher engine speeds, making the engine pull stronger through the mid-range.

• Pairing with Heads: These cams are specifically designed to complement the high-flow characteristics of Butler Performance Cylinder Heads, ensuring the entire top end works in harmony for maximum airflow and combustion efficiency.

Complete Hi-Torq Cam Kits

To simplify the upgrade process and guarantee component compatibility, Butler Performance offers complete Hi-Torq Street Series Hydraulic Roller Camshaft Kits:

• Matched Components: A typical kit includes:

  • The custom-ground Hi-Torq Hydraulic Roller Camshaft.

  • High-quality Hydraulic Roller Lifters (e.g., COMP Cams or Morel).

  • Precisely matched Dual Valve Springs, retainers, and locks that can handle the cam's aggressive lift and RPM range without coil bind or valve float.

  • Often, the kit will specify the required pushrod length and recommended rocker arm ratio to complete the optimized valvetrain.

The Butler Performance Advantage for Street Power

By offering these meticulously developed Hi-Torq Street Series Hydraulic Roller Cams, Butler Performance provides enthusiasts with a proven path to build a Pontiac V8 that delivers exhilarating, reliable power on the street. These cams represent the cutting edge of Pontiac performance tuning, allowing owners to experience the full potential of their classic muscle car every time they hit the throttle.