Ford SBF Trick Flow Round Exhaust Header Flange DXF – 4 in 1 Small Block Ford 44.96 / 48.26 / 51.31 / 54.1 mm CNC Files

4-in-1 digital DXF bundle for manufacturing exhaust manifold / header flanges for selected Ford SBF applications using Trick Flow-style round exhaust-port cylinder heads. This package contains FOUR different complete flange drawings. Each DXF uses the same general flange configuration but provides a different round exhaust-port size, allowing the fabricator to select the version that best matches the cylinder head, primary runner diameter and intended exhaust system. Included exhaust-port versions: - Ø44.96 mm / 1.77 in - Ø48.26 mm / 1.90 in - Ø51.31 mm / 2.02 in - Ø54.10 mm / 2.13 in ALL FOUR DXF variants are included in this single listing. Each drawing represents a complete four-port exhaust header flange for one V8 cylinder bank. The round-port configuration is convenient for custom tubular header fabrication because the primary runners can be matched directly to the selected port size or formed as required for the intended header design. Suitable for: - Ford SBF / Small Block Ford performance projects - Selected Trick Flow cylinder-head applications - Round-port exhaust configurations - Custom tubular V8 headers - Performance exhaust manifolds - Naturally aspirated performance engines - Turbo manifold fabrication - Supercharged engine projects - Drag racing headers - Circuit and motorsport applications - Hot rod and restomod builds - Engine swap projects - Stainless steel header fabrication - Mild/carbon steel exhaust manifolds The four included port sizes provide useful flexibility for professional fabricators working with different cylinder-head combinations and primary runner dimensions. After CNC cutting, the primary runners can be positioned and welded directly to the flange. Depending on the tubing selected, the runner ends may require expanding, reducing or forming to achieve the desired transition into the selected exhaust-port opening. This listing contains FOUR digital DXF cutting files only. No physical flange, cylinder head, exhaust gasket, tubing, collector, exhaust manifold, turbocharger or mounting hardware is included. IMPORTANT: Trick Flow and other aftermarket Small Block Ford cylinder heads are available in multiple configurations. The Trick Flow name alone does not guarantee that every cylinder head uses identical exhaust flange geometry. Always compare the selected DXF with your actual cylinder head or a verified exhaust gasket before manufacturing. Confirm the exhaust-port profile, mounting configuration and complete flange shape before cutting the final material.