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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.
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0***b (78) –
Great item! Exactly as described and great communication! Had issues with shipping which was NOT the sellers fault but they followed up with USPS and I obtained my item.
a***a (236) –
Top notch seller! Always fast shipping and great prices on new, OEM parts. Thanks so much!!
_***n (379) –
Package arrived quickly and was as expected
a***c (1347) –
Item is exactly as described in new condition. Fast shipping. Great seller. Thank you!
s***1 (56) –
Item new in box as described, and shipped out quickly! Great transaction!
r***g (580) –
I had an excellent buying experience with this seller. Quality OEM part that was packaged well and shipped fast. Thanks
i***b (947) –
Fast shipping. A+ transaction!
6***d (73) –
New in box, OEM item. Fast shipping.