Features:

• Tight fit block hugger design for popular hot rods powered by the popular Big Block Chevy engines
• Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increased exhaust velocity
• Heavy duty 16-gauge tubing for increased strength and durability
• Smooth transition, 1-3/4” diameter primary tubes are used for increased exhaust flow increasing performance and improving throttle response
• TIG-welded 2-1/2” collector for maximum strength
• Machined 3/8” header flange for a leak-free seal and maximum strength
• Premium aluminum header gaskets included
• Adapter tubes are supplied for easy exhaust connection
• Stainless steel construction for maximum corrosion resistance and durability

About Flowtech

Flowtech provides high-quality performance exhaust systems at a great value. Explore our lineup of headers, mufflers, and exhaust systems at our official retailer, Holley.com!​

• Mr. Gasket Header Bolts - 3/8-16 x 3/4 Inch Hex Head - Set of 16

  Fits 1965-1990 Chevrolet 396-454 Big Block and 1962-2001 Ford 221-351W

  Part# 919G

  $15.32

  Qty: 

  Add To Cart

The following vehicles are considered Racing Use Only Vehicles:

• Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle