TSP “Firecracker” 4.8/5.3 AFR Heads & Cam Package

Texas Speed “Firecracker” Heads & Cam Package

The Texas Speed Firecracker Heads & Cam Package was built for LS enthusiasts looking for serious horsepower without breaking the bank. Designed around AFR’s proven 1506 cathedral-port cylinder heads, this package combines premium airflow, your choice of TSP cathedral-port camshaft, and hardened chromoly pushrods into one proven combination for 4.8L and 5.3L LS engines.

The AFR 1506 heads feature 210cc intake runners and arrive fully assembled with valves, springs, retainers, and seals already installed. Paired with a properly matched TSP camshaft, the Firecracker package delivers the aggressive sound, increased airflow, and strong horsepower gains that have made heads and cam upgrades one of the most popular modifications for cathedral-port LS combinations.

Whether you’re building a street truck, weekend toy, or budget-minded performance build, the Firecracker package offers premium components from trusted brands in a combination designed to deliver excellent results right out of the box.

What’s Included

• AFR 1506 Cathedral-Port Cylinder Heads (Fully Assembled) — 210cc intake runners complete with valves, springs, retainers, and seals
• Your Choice of TSP Cathedral-Port Camshaft — choose the camshaft that best fits your performance goals
• Texas Speed Chromoly Pushrods — 5/16″, .080″ wall hardened construction

Key Features

• Designed specifically for 4.8L and 5.3L cathedral-port LS engines
• AFR 1506 cylinder heads arrive fully assembled and ready to install
• Choose the TSP cathedral-port camshaft that best fits your combination
• 210cc intake runners provide excellent airflow and velocity
• Includes hardened chromoly pushrods
• Proven combination for naturally aspirated street and strip builds
• Excellent horsepower and torque gains over stock components
• Aggressive sound and improved performance throughout the RPM range
• Premium components at an affordable package price

Fitment

• 1999-2013 GM 4.8L and 5.3L cathedral-port LS engines
• Silverado, Sierra, Tahoe, Yukon, Suburban, Avalanche, and other GM truck applications
• LS1-based Camaro, Firebird, Corvette, and GTO applications
• Requires a cathedral-port intake manifold
• 2007+ applications may require AFM/DOD and/or VVT delete components depending on engine configuration

Important Notes

• AFR cylinder heads ship fully assembled and ready for installation.
• ECU tuning is required after installation.
• Additional supporting modifications such as a torque converter, intake, headers, and fuel system upgrades may be recommended depending on camshaft selection.
• No substitutions outside listed components.