Flowmaster 814120 Header 409S - 2.50" for 1957-1974 Corvette

Flowmaster 814120 Header 409S - Block Hugger - 2.50 in. Ball and Socket Flange Outlet - Pair

Flowmaster's Scavenger Series Elite shorty headers are designed to replace restrictive factory cast iron manifolds. These high quality headers are manufactured from stainless steel and are ceramic coated for maximum durability. They feature 1-5/8 in. primary tubes & 3/8 in. thick laser cut flanges. Like all Flowmaster products, the benefits include improved throttle response, power and engine efficiency. Designed for an easy fit, these headers include gaskets and necessary hardware for easy installation.

Note 1: some Corvette applications may require additional alternator mounting brackets.
Note 2: fits applications without air injection only.
Note 3: this product has been granted a California Air Resources Board (CARB) exemption, an E.O. number, or is a direct or consolidated replacement part. It is 50-state legal, per the application guide.

Features:

• Stainless steel construction
• High Temperature Ceramic Coated
• Dyno tuned for maximum performance
• 3/8" Thick Laser Cut Flanges
• CARB EO # D-698
• Premium Flowmaster quality

Product Specification:

• Automotive Item Grade: High Performance Part
• Bolts/studs included: Yes
• CARB (California) Compliant: Yes
• Finish: Silver Ceramic
• Header collector attachment method: Ball & Socket Flange
• Header collector included: Yes
• Header Collector Outlet Diameter (in): 2.50
• Header head flange thickness (inch): 0.375
• Header inlet port shape: Round
• Header Primary Tube Diameter (in): 1.625
• Header series: Scavenger Series Elite
• Header style: Block Hugger
• Header tube gauge: 16
• Header tube lengths: Unequal Length
• Material: Stainless Steel
• Motor mounts included: Not Required
• Reducers included: No
• SEMA emissions code: 3
• Transmission mounts included: No
• Y-Pipes included: No

Fitments:

• 1972-1974 Chevrolet Corvette Base V8, 7.4L
• 1972-1974 Chevrolet Corvette Base V8, 5.7L
• 1957-1961 Chevrolet Corvette Base V8, 4.6L
• 1962-1968 Chevrolet Corvette Base V8, 5.3L
• 1969-1974 Chevrolet Corvette Base V8, 5.7L
• 1972-1974 Chevrolet Corvette Base V8, 7.4L

Note: 1957 to 1974 Corvette, with a 327 or 350 cubic inch displacement V8 engine, shorty headers, Universal Center Dump