GMC 1000 Series with Chevy Small Block Engine 1961-1962, Mild Steel 604 Crate Engine Dirt Late Model Exhaust Header Kit by Dynatech®. Primary Tubing Diameter: 1.625"-1.75". Collector Outlet Diameter: 3". Emissions: Racing Only. These 604 Crate Engine Dirt Late Model Headers have been designed specifically for use with 604 Crate Engines. Special designed port to get the most power out of your Crate Engine.
Fitment notes: This part for Racing or Off-Road use only.
|Header Material: Mild Steel|
|Primary Diameter: 1.625"-1.75"|
|Collector Diameter: 3"|
|Emissions: Racing Only|
- Delivers a huge boost in performance and an awesome sound
- Rigorously dyno-tested to provide maximum horsepower and torque gains
- Precision designed for superior fit and function
- Expertly crafted from the finest materials for prime quality and reliability
- Ensures years of no-hassle, maintenance-free service
- Meets or exceeds all of your racing or performance requirements
Built to fit: American Made, Barry Wright, Bulllit, Morris, Rocket, Swartz and Other chassis with 2- 5/8" Offset and 6" Setback CNC Laser Cut Flanges and optimized tube length for best overall performance. 17 gauge steel construction and surfaced flanges make this a durable header that remains leak free for multiple racing seasons. This is a complete kit that comes with the 80 degree elbow for the left side and a 14.00" extension for the right side to equal out the system.
Dynatech® has been an industry-leading expert in the evolution of exhaust technology for over 20 years. One of the finest kept secrets of racers and performance builders, state-of-the-art exhaust systems and headers built by Dynatech have made a huge impact on the hot rod, circle track and drag racing world. Painstakingly designed and meticulously engineered, supreme quality Dynatech exhaust products offer amazing horsepower and torque gains. Tube lengths, diameters and routing are thoroughly designed and tested for superior fit and function. Dynatech continues to build supremely efficient and ultra powerful exhaust products that deliver outstanding performance and sound which are sure to put you one step ahead of other drivers on the road.