GM Performance ZZ632/1000 Deluxe 19432060 – 1000HP Big Block Crate Engine Chevrolet’s biggest, baddest big-block ever. The ZZ632/1000 Deluxe packs an astonishing ~1000 horsepower on premium pump gas, built on a tall-deck Sportsman Bowtie foundation with all-forged internals and Pro Stock–inspired cylinder head tech. Learn more at Chevrolet Performance and browse genuine parts at GM Parts Direct. Key Highlights Tall-deck Sportsman Bowtie block with an all-forged roller rotating assembly. Hydraulic roller camshaft and all-new, high-flow spread-port cylinder heads derived from Pro Stock tech. 58X crank-triggered, coil-near-plug ignition on a unique valley plate for precise spark control. EFI induction system delivers stunning output on premium pump gas. Includes a pre-programmed, self-learning ECU for simplified startup and tuning. Installation Notes Throttle body ships uninstalled (crate fitment); installer must mount it. Requires a starter, EFI-compatible high-pressure fuel pump, and an air cleaner for the 4500-series (Dominator) flange. Cylinder head exhaust port design requires a custom exhaust. Use an internally balanced flywheel for manual transmissions. Not intended for marine applications. Technical Specifications Part Number 19432060 Engine Type Chevy Tall-Deck Big-Block V-8 Displacement 632 cu in Bore × Stroke 4.600 in × 4.750 in Block (P/N) Cast iron Bowtie, 4-bolt mains – tall deck (19366599) Crankshaft (P/N) Forged 4340 steel (19366600) Connecting Rods (P/N) Forged steel H-beam (19432392) Pistons (P/N) Forged aluminum 2618 (19366601) Intake Manifold (P/N) Aluminum high-rise single-plane (19366614) Throttle Body (P/N) 4500-style (19366624) Fuel Injectors (P/N) 86 lb/hr (19432057) Camshaft (P/N) Billet steel hydraulic roller (19432531) Valve Lift 0.780 in (intake) / 0.782 in (exhaust) Duration @ 0.050 in 270° intake / 285° exhaust Cylinder Heads (P/N) Aluminum spread-port, RS-X, 70cc chambers (19431810) Valve Sizes 2.450 in intake / 1.800 in exhaust (titanium, 5/16 in stem) Ignition 58X crank-triggered, coil-near-plug Compression Ratio 12.0:1 (nominal) Rocker Arms (P/N) Forged aluminum, shaft-mount, 1.8:1 (19431272) Water Pump (P/N) Aluminum (14058915) Oil Pan (P/N) Steel, 8-quart (19366604) Recommended Fuel Premium pump, 93 octane or higher Max Recommended RPM 7,000 rpm Balanced Internal Why ZZ632/1000 Deluxe? This naturally aspirated 632ci big block is a statement piece from Chevrolet Performance—combining race-bred airflow, modern EFI control, and bulletproof forged hardware. Ideal for drag builds, pro-touring projects, and high-end custom applications where reliability and raw power matter. Explore Chevrolet Performance crate engines or shop genuine GM components to complete your build.
