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Heat-treated internal parts
Speedmasterª EFI systems give you everything you need to add powerful and efficient fuel injection to your vehicle
This kit features a simple V-belt to serpentine pulley conversion while retaining your existing brackets
headers an exact seal with their composite material construction
you need Speedmaster ball joints
Chevy 400 4340 Forged Steel Crankshaft ST-3.750 M-400 RJ-2.1 RMS-2Pc Bal-Int LW Heat-treated internal partsThese Speedmaster crankshafts are made from the same strong aircraft quality forging as standard weight cranks, but have profiled counterweights for less weight. Speedmaster lightweight crankshafts are perfect for engines wanting quicker rpm. These crankshafts feature profiled aero wing counterweights and have straight shot and chamfered oil holes. Speedmaster crankshafts are nitride hardened, with large radii on all journals for superior wear
