$275 Shipping
$275 Shipping
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#35020250
$2,428.99
/each
Factory Shipped
Quantity
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Short Block Crate Engine Type, Internal Engine Balance
| Crate Engine Type | Short Block |
| Engine Displacement | 427 cu. in. |
| Camshaft Type | Hydraulic Roller |
| Piston Material | Hypereutectic Aluminum |
| Carburetor Included | No |
Made to Order
This custom item will ship when completed
Truck Shipment
Truck shipments must be pre-paid with a credit card, certified check or money order
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855.313.9176Quick and Easy Returns
Return PolicyThe ATK SP115 Chevy LM7 5.3L GEN IV short block is built using a seasoned 5.3L Gen IV block from 1999-2007, delivering 330 cubic inches of displacement with a 3.810" bore and 3.622" stroke. It features an OEM GM 58-tooth reluctor wheel crankshaft, forged powder metal connecting rods, and stock hypereutectic flat-top pistons with two valve reliefs, providing compression ratios of 9.8:1 with 61cc heads, 9.5:1 with 64cc heads, and 9.1:1 with 68cc heads (compression may vary depending on deck height and head gasket thickness). The short block is assembled with plasma-moly rings, camshaft bearings installed and clocked to OEM specifications, and freeze and oil galley plugs that are installed and sealed. It is internally balanced and recommended to use a matching internal balance balancer, flexplate, and head gasket for optimal performance.
Application
Designed for 1999-2007 Chevy Applications.
Specs
Warranty claims must be filed with the manufacturer in accordance to their policies.
Follow EPA, CARB, and state regulations for engine changes
CA WARNING:
Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov
| KEY SPECS | |
|---|---|
| MFG. Part # | SP115 |
| Brand | ATK Engines |
| Crate Engine Type | Short Block |
| Engine Displacement | 427 cu. in. |
| Camshaft Type | Hydraulic Roller |
| Piston Material | Hypereutectic Aluminum |
| Carburetor Included | No |
| Intake Manifold Included | No |
| Distributor Included | No |
| Valve Covers Included | No |
| Engine Balance | Internal |
| Cylinder Heads Included | No |
| Rear Main Seal Style | 1-piece |
| Throttle Body Included | No |
| Timing Cover Included | No |
| Oil Pan Included | No |
| Water Pump Included | No |
| Harmonic Balancer Included | No |
| Flexplate Included | No |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | No |
| Spark Plug Wires Included | No |
| Computer Included | No |
| Wiring Harness Included | No |
| Reluctor Wheel | 58x |
| GENERAL | |
| Camshaft Duration (.050 in) | 239° intake / 255° exhaust |
| Camshaft Lift (in) | .624 intake / .624 exhaust |
| Bore x Stroke (in) | 4.060" bored to 4.069" x 4.125" |
| Sold in Quantity | Each |
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