Performer manifolds are dual-plane, low-rise intake manifolds with a 180° firing order and patented runner design that you won't find in other brands. This patented design greatly improves torque over a wide rpm range for excellent throttle response, especially off-idle through the mid-range. Performers are ideal for passenger cars, trucks, 4x4s, tow vehicles and RVs. There are EGR and non-EGR versions available for most V8 and some V6 engines.

• Performer 351-4V is designed for street 351-C and Boss 351 Fords that came stock with 4V carb and heads.
• Will not fit Boss 302 or accept stock Motorcraft spread-bore carb.
• No provision for exhaust heated chokes or exhaust crossover.
• Made in USA