Fel-Pro Exhaust Manifold Gasket Set for Big-Block Chevy 396–502ci — Perforated Steel Core, High-Temp Nonstick Coating

Fel-Pro 1412 is a performance exhaust manifold gasket kit engineered to provide a durable, high-temperature seal for large-displacement V8 engines.

Built for high-heat, high-flow applications, the Fel-Pro 1412 gasket set uses a perforated steel core bonded to dense fiber facings to resist blowout and premature failure. This gasket package is designed for classic and performance big-block Chevrolet engines — covering 396, 402, 427, 454 and 502 cubic-inch displacements — and includes features intended to simplify installation and future maintenance.

How does the Fel-Pro 1412 gasket hold up under racing or heavy-use conditions?

The 1412 combines a strong perforated steel core with high-density fiber on both sides to maintain sealing under repeated thermal cycling and elevated exhaust temperatures. Compared with basic paper gaskets, it resists burnout and extrusion that can lead to leaks.

• Perforated steel core provides structural support against pressure spikes.
• High-density fiber facing improves conformity to uneven flange surfaces.
• Nonstick coating reduces seizing and simplifies future disassembly.

Will this gasket set fit my engine and how do I confirm fitment?

The Fel-Pro 1412 is specified for GMP Performance big-block Chevy engines in 396 (6.5L), 402 (6.6L), 427 (7.0L), 454 (7.4L) and 502 (8.2L) displacements. Always verify compatibility by inputting your vehicle year, make, model and engine details into the fitment checker provided by the seller before ordering.

• Designed for the listed GMP Performance V8 applications only.
• Check online fitment tool and any product notes before purchase.
• Not intended for use in emission-controlled vehicles—confirm vehicle requirements.

What installation features help make fitting and future service easier?

The 1412 includes slotted bolt holes and a nonstick surface treatment to simplify alignment and removal. Slotted holes allow slight adjustment during header or manifold installation, while the coating reduces adhesive buildup and damage when the gasket is removed later.

• Slotted bolt holes accommodate minor flange misalignment for easier assembly.
• Nonstick coating lowers the risk of gasket tearing on removal.
• Durable construction reduces the need for frequent replacement in performance use.

Does this gasket work with emissions systems and everyday street use?

Fel-Pro markets the 1412 to performance and racing applications; it is not intended for emission-controlled vehicles. For street-driven cars that must meet emissions rules, verify local regulations and consider application-appropriate gaskets.

• Not recommended for emissions-controlled installations.
• Best suited for race, off-road, or non-emissions high-performance builds.
• Consult local vehicle laws if uncertain about compliance.

Who is this for? The Fel-Pro 1412 exhaust manifold gasket set is aimed at mechanics, restorers and performance builders working on big-block Chevrolet engines where reliable high-temperature sealing and straightforward serviceability matter. Choose this kit if you run GMP Performance-powered V8s, need a gasket more robust than basic paper versions, and want installation-friendly features like slotted bolt holes and a nonstick finish.