Rad Win by Rad Rides
November 7, 2025
THE AUTO BUILDER
Featured
Remembering Alex Xydias
The automotive world lost a true legend with the passing of Alex Xydias in 2024. Born in 1922, Xydias was not just a figure in hot rodding; he was a driving force whose innovations and passion forever changed the landscape of the industry. His life was a journey of relentless pursuit—of speed, of innovation, and of community.
TPI: TODAY’S PERFORMANCE INCREASE
There are few modifications that can be made to an engine that can give both increased performance and better fuel economy. In these days of increased gasoline prices (nearly $4.50 per gallon), fuel mileage is an important consideration for vintage trucks that owners consider their daily drivers. For many reasons, vintage pickups are becoming not just weekend toys but also weekday workers. And one of the best ways to increase both performance and mileage is with an electronic fuel-injection system.
Meet the Legends of Hot Rodding at the Triple Crown of Rodding
This isn’t just a lineup—it’s a living hall of fame. We’re talking the visionaries whose cars dominate the Ridler, the America’s Most Beautiful Roadster (AMBR), and the Goodguys Top 12. The innovators who set the trends that every other shop follows. The craftsmen whose names carry weight in any serious shop conversation, even if they aren’t on reality TV every week.
Spotlighter
PRODUCT SPOTLIGHT: Big Block Chevy Round Port Custom Header Build Kit by Stainless Headers MFG. INC.
The Ultimate Custom Header Build Kit for Your Big Block Chevy
When it comes to muscle, power, and performance, you can't beat a big block Chevy. And if you want to harness that raw power, there's no better way to do it than with a custom set of headers. Enter the Pro Series Big Block Chevy Round Port Custom Header Build Kit from Stainless Headers Mfg. Inc. – the ultimate toolkit for any serious fabricator.
Author
The Auto Builder Staff
Photos Courtesy of Stainless Headers MFG. INC.
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!
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