If you live for pulling trucks, racing, or high-performance applications, this build kit has everything you need to bring your vision to life. It’s designed to fit the standard bore space of big block Chevy heads, making it versatile enough for a variety of builds.

Unparalleled Precision and Quality

What sets this header build kit apart from the rest? It’s all about the details:

• Flanges: The kit includes two American-made, precision laser-cut 3/8″ thick header flanges specifically designed for Big Block Chevy heads. You can also opt for eight single port flanges for easier fabrication and installation.
• Full Bank Port Size Options: Choose from 2″, 2 1/8″, 2 1/4″, 2 3/8″, or 2 1/2″. Single port flange options are available in 2 1/4″, 2 3/8″, or 2 1/2″.
• Mandrel Bends: You get twelve 180-degree J bends with 6″ and 12″ legs. These extra-long legs mean you won’t need to buy additional straight tubing. The bends are crafted from American-made 304 stainless steel, which forms better, welds better, and lasts longer.
• 4 into 1 Collectors: The kit offers precision-formed 4 into 1 collectors or optional super high-flow slip-on merge collectors with four sets of collector tabs. Like the bends, these collectors are made from top-quality American-made 304 stainless steel.
• Collector Stars: These laser-cut stars simplify the fabrication process, acting as a weld-in block between the tubes before attaching the collector.
• Purge Caps: Back purging is a breeze with these caps. Each kit includes four primary caps and one collector cap.
• O2 Bungs: Two precision-machined, weld-on O2 bungs are included. Made from 304 stainless billet, they weld beautifully.
• Tig Filler Rod: The kit includes a half-pound package of filler rod, ensuring you have everything you need for a perfect weld.

Performance You Can Count On

The Pro Series Big Block Chevy Header Build Kit is engineered to handle serious horsepower:

• 2″ Primary Tube Header Kit: 450-600 Naturally Aspirated Horsepower
• 2 1/8″ Primary Tube Header Kit: 600-800 Naturally Aspirated Horsepower
• 2 1/4″ Primary Tube Header Kit: 800-950 Naturally Aspirated Horsepower
• 2 3/8″ Primary Tube Header Kit: 900-1100 Naturally Aspirated Horsepower
• 2 1/2″ Primary Tube Header Kit: 1100+ Naturally Aspirated Horsepower

Stay Connected and Inspired

Head on over to the Stainless Headers Mfg. Inc. community on Facebook, Instagram, and YouTube. Stay updated on customer projects, watch how-to videos, and get the latest information about their extensive product lineup.

So, whether you’re building a beast for the strip or the street, the Pro Series Big Block Chevy Round Port Custom Header Build Kit from Stainless Headers Mfg. Inc. is your go-to choice for unparalleled performance and quality. Get yours today and unleash the full potential of your big block Chevy!