Same Performer casting as the chrome plasma version, finished in black plasma instead, which suits an engine bay built around blacked-out accessories rather than polished ones. The dual-plane runners are tuned for idle to 5,500 rpm, so low and midrange torque comes up where a street 289 or 302 lives instead of waiting for rpm the car rarely sees.

Edelbrock 2121-BP Performer Manifold Specifications:

• Dual plane design, cast aluminum, black plasma finish.
• Fits small-block Ford 289 and 302 V8 engines.
• Idle to 5,500 rpm basic operating range.
• Square bore carburetor flange. Heights: 3.5 in. front, 4.12 in. center, 4.75 in. rear.
• Non-EGR casting. Gaskets are not included.