SKU: 25-1025
Speed Engineering LS Swap Longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our LS swap longtube headers are mandrel bent, tig welded, and feature natural stainless steel construction. All of our LS swap longtube headers have been dyno proven. We stand behind our LS swap longtube headers in saying you will not find a better fitting, quality built, budget header for your vehicle.
Features include:
Vehicles:
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, 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 spark plug wires".
Note: "For LS series engine swaps only" These do not work on standard SBC or BBC engines.
Note: If using a larger 4L80E or older Turbo 350/400 transmission the bellhousing ears may need to be trimmed for proper clearance.
Note: "Does not fit 4wd"
(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.
Material and craftsmanship are very good. Headers fit very well except for the passenger side o2 bung is positioned so that it interferes with an aftermarket servo cover on a 4l60E.
Fit perfectly with my 5.3/NV4500/np208 1983 k20
Nice thick flanges, plenty of clearance
Highly recommended installed on a 1984 C10 I run a 5.3 with a TH400 only thing I had to do was cut a ear off my transmission just as the instructions on the web said so I like them
These headers look great, but you cant run them with a manual transmission they hit the clutch linkage. Went with the short/huggers instead. Great product regardless.
They fit perfect on my 78 C10 gen 3 5.3/60e swap. My engine mounts are cheapo slotted adjustable ones from Amazon (for fit reference). They fit in the all the way forward and aft positions. They are actually stainless and are uncoated polished so they'll change colors after a few heat cycles (mine are a light gold color now). They came with bolts also! I would definitely recommend them!