CNC Machined in the USA | 6061 Billet Aluminum | Complete Hardware Kit Included
The 396, the 427, the 454 — three displacement numbers that all belong to the same family: Chevrolet's Mark IV big block, the engine that defined American muscle from the mid-1960s through the early 1970s. Whether your big block lives in a Chevelle, a Camaro, a Corvette, an El Camino, or a C10 truck, the displacement number on the outside of the valve cover changes but the bloodline doesn't. This badge honors the whole family with the name that started it all.
This is the Mad4Metal Big Block Chevy badge — machined from a solid billet of 6061-T6 aircraft-grade aluminum. The Big Block designation is CNC cut directly into the face and hand-polished to a mirror finish. If you want to claim the family name rather than a single displacement, this is the one. No paint fill, no printing, no adhesive backing — just aluminum and a cutting tool.
Not stamped. Not cast. Not a sticker. Machined.
Hardware holes bored at 2-3/8" center-to-center on 1/4"-28 fine thread. Bolt it to the valve cover and it looks like it was always supposed to be there.
These badges are polished to a mirror finish, but if you look closely you'll see the machining marks from the CNC cutting process — fine, consistent toolpath lines across the face. Those marks are intentional. They're what separates a real machined billet part from something that was painted, cast in a mold, or made to look like metal. A perfectly mark-free, glassy smooth surface would look like painted plastic. The toolpath lines catch light at different angles depending on where you're standing, and that shifting reflection is the signature of a part that was actually cut on a machine. If you want to bring up the high spots even more, a quick pass with aluminum polish will do it — while keeping the machining character completely intact.
| Material | 6061-T6 Aircraft Grade Billet Aluminum |
| Finish | Polished — machined surface marks visible (intentional character) |
| Height | 2" |
| Width | 3" |
| Thickness | 3/16" |
| Bolt Hole Spacing (center to center) | 2-3/8" |
| Fastener Thread | 1/4"-28 Fine Thread |
| Fasteners Included | 2x 18-8 Stainless Pan Head Screws + 2x Nylon Lock Nuts |
| Weight | 0.9 oz |
| Made In | USA 🇺🇸 |
Cast zinc cracks under vibration. Plastic fades, chalks, and falls apart with heat cycles — and there's no shortage of heat coming off a big block. Stick-on emblems peel, every time, guaranteed. 6061-T6 aluminum doesn't do any of those things. It's the same alloy used throughout the aerospace industry: light, strong, corrosion-resistant, and indifferent to the temperature swings a running engine produces. When the finish dulls, you polish it back. No repainting, no replacing, no starting over.
Mad4Metal is a brand of Jacer Enterprises, LLC, operating out of Coeur d'Alene, Idaho. Every badge is designed, programmed, and CNC machined in-house — start to finish. No outsourcing, no overseas production runs, no drop-shipping. If you need a badge with a specific displacement, a custom graphic, or something you don't see in the catalog, reach out. Custom orders are welcome.