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This high performance muffler has been developed for vehicles with 4" sidepipes such as 1965-74 Corvettes or vehicles equipped with Hooker Super Competition Roadster and Side Mount Headers. These mufflers produce an average of 23% more power than open headers and feature a high-flow, perforated core that operates at 99% efficiency. High temperature packing material absorbs noise while producing a powerful mellow sound. These mufflers, as tested on a 1968 Corvette with a 427 cu inch engine increased horsepower by 40 at a peak of
Features:
Fits 4" Side Tube systems
Maximum Flow Muffler Design
Easily Removed For Racing
Durable 16 Gauge Outer aluminized Steel Case
Electrostatically applied High-Temp Black Paint Finish
2-1/2" to 4" contoured inlet/outlets
2-1/2" high flow perforated core in a 4" casing
2.5" Perforated Core Surrounded by High temperature Sound Absorbing Packing Material
Maximum Flow 4" Sidetube Slip-In Muffler | These high performance mufflers produce an average of 23% more power than open headers. Sold in pairs.
Manufacturer
Holley products have been the undisputed leader in fuel systems for over 100 years. Holley carburetors power every NASCAR Sprint Cup team and every NHRA Pro–Stock champion. Holley's products include performance fuel pumps, fuel injection, intake manifolds, cylinder heads & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies, Hooker Headers, Flowtech Headers, NOS, Weiand, or Earl's, Holley products can give you the edge you need over the competition.
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