(In Stock)

Speed Engineering LT Swap Longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our LT swap longtube headers are mandrel bent, tig welded, and feature natural stainless steel construction. All of our LT swap longtube headers have been dyno proven. We stand behind our LT swap longtube headers in saying you will not find a better fitting, quality built, budget header for your vehicle.

Features include:

• Mandrel Bent Tubing
• 1 7/8" Primaries
• 3" Collector
• Longtube Header Design
• Gen V LT Swap Conversion Header
• Perfect Ground Clearance for Air Ride & Lowered applications
• Works on factory & most aftermarket chassis Porterbuilt, Choppin Block, ect.
• Merge Spikes
• V8 Engines Only
• 5.3L, 6.2L, 6.6L, LT1, LT4, L8T/L8P Engines
• CNC Machined Flanges
• Natural 304 Stainless Steel
• Standard Graphite Manifold Gaskets

Vehicles:

• 1960-1987 C10 Trucks
• (1960-1966 C10 Trucks require slider engine mounts to clear the front crossmember)
• 1960-1987 K10 Trucks

Note: Headers do not hang below the frame and offer ground clearance with air ride suspension and lowered suspension. Customers have installed this product on Choppin Block, Roadster Shop (with Pro spindles), Porterbuilt, and other front drop members with air ride and coil over suspension.

Note: "Due to older vehicle frame clearance headers are pulled in very tight, and require our LT spark plug wires".

Note: "For LT Direct Injected series engine swaps only" These do not work on standard SBC or BBC engines.

Note: Installed pictures are of our 1 7/8" headers with 1" offset back motor mounts.

Note: If using a larger 4L80E or older Turbo 350/400 transmission the bellhousing ears may need to be trimmed for proper clearance.

Note: Can fit 4wd applications with proper engine position and custom exhaust work. Having lifted suspension is a plus for driveline clearance. 

Note: Might require oil cooler adapter or delete kit on the LT4 engines.

Note: 1963-1972 C10 Exhaust system is also designed to work with our trailing arm crossmember. If the factory crossmember is used holes will need to be cut in order for our exhaust to pass through.  

(Warning) This is a RACE ONLY product manufactured and sold for installation on vehicles to be used solely for competition purposes. Once this part is installed, the vehicle may never be used, or registered or licensed for use, on a public road or highway. If you install this part on your vehicle and use the vehicle on a public road or highway, you will violate the Clean Air Act 203(a)(3), 42 U.S.C, 7522(a)(3) and may be subject to personal civil or criminal liability.