ATK High Performance GM 496 Stroker 600 HP Stage 3 Long Block Crate Engines HP631PC

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Part Number: HPE-HP631PC

$11,949.00

ATK High Performance GM 496 Stroker 600 HP Stage 3 Long Block Crate Engines

Crate Engine, GM 496 Stroker 600 HP Stage 3 Long Block, Assembled, Hydraulic Roller Tappet, Internal Balance, Aluminum Heads, Chevy, 7.4L, 8.1L, Each
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ATK High Performance GM 496 Stroker 600 HP Stage 3 Long Block Crate Engines HP631PC

ATK High Performance GM 496 Stroker 600 HP Stage 3 Long Block Crate Engines HP631PC

HPE-HP631PC

Not Yet Reviewed

Part Number: HPE-HP631PC

Estimated Ship Date: Jan 26, 2027

$11,949.00

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Q&A
Instructions & Calculators

Estimated Ship Date: Jan 26, 2027 Would you rather pick it up?

Overview

Brand:
ATK High Performance Engines
Manufacturer's Part Number:
HP631PC
Part Type:
Crate Engines
Product Line:
ATK High Performance GM 496 Stroker 600 HP Stage 3 Long Block Crate Engines
Summit Racing Part Number:
HPE-HP631PC
UPC:
653517518065
Crate Engine Family:
Chevy Big Block
Actual Engine Displacement:
8.1L/496
Crate Engine Cylinder Head Material:
Aluminum
Engine Block Material:
Cast iron
Advertised Compression Ratio:
10.1:1
Assembled:
Yes
Engine Balance:
Internal
Cam Style:
Hydraulic roller, OE roller
Rear Main Seal Style:
1-piece
Intake Manifold Included:
Yes
Intake Manifold Style:
Carbureted
Cylinder Heads Included:
Yes
Carburetor Included:
Yes
Throttle Body Included:
No
Distributor Included:
Yes
Oil Pan Included:
Yes
Valve Covers Included:
Yes
Timing Cover Included:
Yes
Water Pump Included:
Yes
Harmonic Balancer Included:
Yes
Flexplate Included:
Yes
Flywheel Included:
No
Air Cleaner Included:
No
Spark Plugs Included:
Yes
Spark Plug Wires Included:
Yes
Computer Included:
No
Wiring Harness Included:
No
Supercharger Included:
No
Remanufactured:
Yes
Quantity:
Sold individually.

ATK High Performance GM 496 Stroker 600 HP Stage 3 Long Block Crate Engines

ATK High Performance GM 496 Stroker 600 hp Stage 3 long block crate engines are designed for street/strip use, so expect big power with a rough idle. ATK Stage 3 or complete dressed engines are engineered for those wanting to drop the engine into their project and fire it up. They have outfitted the engines as completely as possible to save you time and headaches.

Typically ATK GM 496 Stroker 600 hp complete dressed engines consist of:

* Seasoned OE Gen V block with 4-bolt mains
* 4340 forged crankshaft
* 4340 forged H-beam connecting rods
* Forged pistons
* Chromoly piston rings
* Hydraulic roller camshaft
* Aluminum cylinder heads
* Billet aluminum full roller rocker arms
* Timing set
* Oil pan, oil pump and pick-up tube
* Performance intake manifold
* 850cfm carburetor
* Distributor
* Long water pump
* Front damper
* Spark plugs and wires
* Valve covers
* Flexplate

Applications

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Instructions & Calculators

CFM Calculator

Instruction Sheets for Part Number HPE-HP631PC

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Some parts are not legal for use in California or other states with similar laws / regulations

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California Warning

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This product can expose you to chemicals including chromium (hexavalent compounds), which are known to the State of California to cause cancer and birth defects or other reproductive harm.

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