Speed Engineering LS Swap 1 5/8" Shorty Headers Camaro, Chevelle, Nova, C10, K10 & OBS

Speed Engineering LS swap shorty headers combine natural 304 stainless steel construction with mandrel-bent, TIG-welded tubing for classic GM car and truck swaps. The port-matched V-band collector design uses merge spikes and is dyno proven for gains of 18+ rear-wheel horsepower.

Features

• 1 5/8-inch primaries
• 2 1/2-inch V-band collectors
• Collector merge spikes and port-matched flanges
• CNC-machined flanges
• Includes standard graphite manifold gaskets
• Fits V8 4.8L, 5.3L, 6.0L, 6.2L, LS1, LS2, LS3, LS6 and LSA engines

Applications

• 1960s-1970s Camaro and Firebird
• 1968-1974 Nova
• 1968-1972 Chevelle
• 1960-1987 C10/K10 Chevrolet and GMC trucks
• 1989-1999 C1500/K1500

Part number: 25-1021. LS-series swaps only. Early applications may require an aftermarket steering shaft; 4L80E/TH350/TH400 bellhousing ears may require trimming. Universal catalytic converters require fabrication. Race-use-only emissions product.

SMG Ceramic Plug Wire Upgrade

Our 8mm SMG Ceramic Plug Wire Set uses white ceramic spark-plug boots that will not melt against hot header tubes the way conventional boots can. They are built for close-clearance header installations, and they are the only plug wires we use on SMG in-house header builds. Select the SMG Ceramic Plug Wires upgrade to add SKU 9070C.