For 5000 to 8500 RPM High-Performance Engines. Cold Formed To Ensure Molecular Integrity. For All-Out Nitrous Assisted Drag Racing. Uses Large 3.2 sq in. Runners. Use with Edelbrock or GM 18-Degree Heads. Carburetor Mounting Flange For 4500-Series Carb. Both Plenum and Carb Pad Need Blending/Porting. Includes Nitrous Bosses on Runners.
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Item# : SPM15499218724
Model # : 2859