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ATK HP55 Stage 1 Stroker Long Block Crate Engine – GM 383, 500 HP
The ATK HP55 is a remanufactured GM 383 stroker Stage 1 long block rated 500 HP, with aluminum heads and hydraulic roller cam. Includes heads, oil pan, timing cover and valve covers; other components are not included.
PERFORMANCE STARTS AT THE CORE
BUILT TO KEEP
EQUIPMENT RUNNING
The ATK HP55 is a remanufactured GM 383 stroker Stage 1 long block rated 500 HP, with aluminum heads and hydraulic roller cam. Includes heads, oil pan, timing cover and valve covers; other components are not included.
- Actual Engine Displacement: 6.3L/383
- Air Cleaner Included: No
- Assembled: Yes
- Brand: ATK High Performance Engines
- Cam Style: Hydraulic roller, OE roller
Dependablepower →
COMPLETE PRODUCT INFORMATION
Full Product Description
The ATK HP55 is a remanufactured GM 383 stroker Stage 1 long block rated 500 HP, with aluminum heads and hydraulic roller cam. Includes heads, oil pan, timing cover and valve covers; other components are not included.
Specifications
- Brand: ATK High Performance Engines
- Part / Model Number: HP55
- Actual Engine Displacement: 6.3L/383
- Assembled: Yes
- Cam Style: Hydraulic roller
- Crate Engine Cylinder Head Material: Aluminum
- Crate Engine Family: Chevy Small Block
- Engine Balance: Internal/External
- Engine Block Material: Cast iron
- Part Type: Crate Engines
- Product Line: ATK High Performance GM 383 Stroker 500 HP Stage 1 Long Block Crate Engines
- Rear Main Seal Style: 1-piece
- Remanufactured: Yes
Included: Cylinder Heads, Oil Pan, Timing Cover, Valve Covers.
Technical Specifications
Product data| Product | ATK HP55 Stage 1 Stroker Long Block Crate Engine – GM 383, 500 HP |
|---|---|
| SKU | HP55 |
| Actual Engine Displacement | 6.3L/383 |
| Air Cleaner Included | No |
| Assembled | Yes |
| Brand | ATK High Performance Engines |
| Cam Style | Hydraulic roller, OE roller |
| Carburetor Included | No |
| Computer Included | No |
| Crate Engine Cylinder Head Material | Aluminum |
| Crate Engine Family | Chevy Small Block |
| Cylinder Heads Included | Yes |
| Distributor Included | No |
| Engine Balance | Internal/External |
| Engine Block Material | Cast iron |
| Flexplate Included | No |
| Flywheel Included | No |
| Harmonic Balancer Included | No |
| Intake Manifold Included | No |
| Manufacturer's Part Number | HP55 |
| Oil Pan Included | Yes |
| Part Type | Crate Engines |
| Product Line | ATK High Performance GM 383 Stroker 500 HP Stage 1 Long Block Crate Engines |
| Quantity | Sold individually. |
| Rear Main Seal Style | 1-piece |
| Remanufactured | Yes |
| Spark Plug Wires Included | No |
| Spark Plugs Included | No |
| Supercharger Included | No |
| Throttle Body Included | No |
| Timing Cover Included | Yes |
| UPC | 00653517171109 |
| Valve Covers Included | Yes |
| Water Pump Included | No |
| Wiring Harness Included | No |
Engineered forreal-world performanceHP55
DELIVERY & AFTER-SALES INFORMATION
Shipping & Returns
Important information for this product before and after purchase.Heavy or oversized equipment delivery is coordinated according to the product and destination address.
Timing and applicable delivery arrangements are confirmed during checkout or by Kayros Tool support.
Contact Kayros Tool before returning an item so eligibility, product condition, and return instructions can be confirmed.
Overview
The ATK HP55 is a remanufactured GM 383 stroker Stage 1 long block rated 500 HP, with aluminum heads and hydraulic roller cam. Includes heads, oil pan, timing cover and valve covers; other components are not included.
Specifications
- Brand: ATK High Performance Engines
- Part / Model Number: HP55
- Actual Engine Displacement: 6.3L/383
- Assembled: Yes
- Cam Style: Hydraulic roller
- Crate Engine Cylinder Head Material: Aluminum
- Crate Engine Family: Chevy Small Block
- Engine Balance: Internal/External
- Engine Block Material: Cast iron
- Part Type: Crate Engines
- Product Line: ATK High Performance GM 383 Stroker 500 HP Stage 1 Long Block Crate Engines
- Rear Main Seal Style: 1-piece
- Remanufactured: Yes
Included: Cylinder Heads, Oil Pan, Timing Cover, Valve Covers.
Specifications
Actual Engine Displacement: 6.3L/383
Air Cleaner Included: No
Assembled: Yes
Brand: ATK High Performance Engines
Cam Style: Hydraulic roller, OE roller
Carburetor Included: No
Computer Included: No
Crate Engine Cylinder Head Material: Aluminum
Crate Engine Family: Chevy Small Block
Cylinder Heads Included: Yes
Distributor Included: No
Engine Balance: Internal/External
Engine Block Material: Cast iron
Flexplate Included: No
Flywheel Included: No
Harmonic Balancer Included: No
Intake Manifold Included: No
Manufacturer's Part Number: HP55
Oil Pan Included: Yes
Part Type: Crate Engines
Product Line: ATK High Performance GM 383 Stroker 500 HP Stage 1 Long Block Crate Engines
Quantity: Sold individually.
Rear Main Seal Style: 1-piece
Remanufactured: Yes
Spark Plug Wires Included: No
Spark Plugs Included: No
Supercharger Included: No
Throttle Body Included: No
Timing Cover Included: Yes
UPC: 00653517171109
Valve Covers Included: Yes
Water Pump Included: No
Wiring Harness Included: No
Shipping & Returns
NST Cargo coordination: Heavy or oversized equipment delivery is coordinated according to the product and destination address.
Delivery estimate: Timing and applicable arrangements are confirmed during checkout or by Kayros Tool support.
Returns: Contact Kayros Tool before returning an item so eligibility, condition, and instructions can be confirmed.
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ATK HP55 Stage 1 Stroker Long Block Crate Engine – GM 383, 500 HP$3,905.38

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