Seller notes

Description Exhaust Headers For Small Block Chevy 265 283 305 307 327 350 383 400 V8 Engines Perfect for street rods and rat rods Computer design features TIG & MIG welds 1 5/8" large heavy duty primaries are mandrel bent for optimal flow Similar headers have 1 1/2" thin wall tubes which hurt flow 3/8" flange means a great seal that won’t warp 2 1/2" collectors(2.5-2.0" Reduce) creates perfect scavenging of your exhaust Increases engine power - 15+ horsepower & 20+ torque Stock motor mounts ca...

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