BRAND NEW SOUTHWEST SPEED LS SWAP EXHAUST MANIFOLDS, CHROME PLATED FINISH, 1.75" PRIMARY TUBES, 2.25" COLLECTORS, COMPATIBLE WITH GM SMALL BLOCK GEN III & IV ENGINES (PART #440-2004). THESE SOUTHWEST SPEED CAST IRON EXHAUST MANIFOLDS HAVE A 2.25" OUTLET, CHROME PLATED FINISH & ARE DESIGNED TO HUG CLOSE TO THE ENGINE BLOCK SO THEY FIT INTO A WIDE VARIETY OF REPLACEMENT & ENGINE-SWAP APPLICATIONS. CAST IRON PROVIDES YEARS OF LEAK-FREE PERFORMANCE WITH LESS UNDER HOOD NOISE. SHORTY DESIGN MEANS YOU CAN ROUTE EXHAUST TUBING CLOSE TO YOUR FRAME/FLOOR PAN FOR MAX GROUND CLEARANCE. FEATURES: FOR GM LS ENGINE SWAP APPLICATIONS WHERE DURABILITY & LEAK-FREE SEALING IS DESIRED 304 STAINLESS STEEL MATING FLANGES INCLUDED (MATING FLANGE FASTENERS ARE NOT INCLUDED) 2.25" OUTLET DIAMETER OFFERS IMPROVED FLOW FOR MAX PERFORMANCE FROM CAST IRON EXHAUST MANIFOLD 2 BOLT EXIT FLANGE CONFIG MATCHES THE E-ROD EXHAUST MANIFOLDS FOR A FACTORY LIKE FITMENT - ALLOWS USE OF OE GASKETS & FASTENERS FOR AN OE QUALITY SEAL & FITMENT CAST FROM HI-SILICON-MOLY DUCTILE IRON TO PROVIDE DURABILITY & CORROSION RESISTANCE TIGHT TUCK DESIGN PROVIDES UNIVERSAL FIT FOR MOST POPULAR CHASSIS SPECS: APPLICATION: MULTI-FIT BOLT SIZE: M8 X 1.25 X 25MM COLLECTOR DIAMETER: 2.25" ENGINE: GM SMALL BLOCK GEN III & IV (LS BASED) HEADER FINISH: CHROME PLATED PRIMARY TUBE DIAMETER: 1-3/4" PRODUCT TYPE: MANIFOLD SUBFRAME: STOCK YOU CAN VIEW AND DOWNLOAD THE COMPLETE ASSEMBLY INSTRUCTION BOOKLETS FOR THESE EXHAUST MANIFOLDS HERE.
