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ATK SP38-G4 LS 408 Short Block
The ATK SP38-G4 is a remanufactured Chevy LS Gen IV 408 (6.7L) stroker short block with a 6-bolt main block, 9.240-inch deck, forged 4340 crank and H-beam rods, forged +18cc dish pistons, 24-tooth reluctor and internal balance. Flexplate, flywheel, balancer, oil pan and timing cover are not included.
PERFORMANCE STARTS AT THE CORE
BUILT TO KEEP
EQUIPMENT RUNNING
The ATK SP38-G4 is a remanufactured Chevy LS Gen IV 408 (6.7L) stroker short block with a 6-bolt main block, 9.240-inch deck, forged 4340 crank and H-beam rods, forged +18cc dish pistons, 24-tooth reluctor and internal balance. Flexplate, flywheel, balancer, oil pan and timing cover are not included.
- Actual Engine Displacement: 6.7L/408
- Assembled: Yes
- Brand: ATK High Performance Engines
- Connecting Rod Beam Style: H-beam
- Connecting Rod Material: Forged 4340 steel
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COMPLETE PRODUCT INFORMATION
Full Product Description
The ATK SP38-G4 is a remanufactured Chevy LS Gen IV 408 (6.7L) stroker short block with a 6-bolt main block, 9.240-inch deck, forged 4340 crank and H-beam rods, forged +18cc dish pistons, 24-tooth reluctor and internal balance. Flexplate, flywheel, balancer, oil pan and timing cover are not included.
Specifications
- Brand: ATK High Performance Engines
- Part / Model Number: SP38-G4
- Actual Engine Displacement: 6.7L/408
- Assembled: Yes
- Connecting Rod Beam Style: H-beam
- Connecting Rod Material: Forged 4340 steel
- Crankshaft Material: Forged 4340 steel
- Crate Engine Family: Chevy LS
- Deck Height (in.): 9.240 in.
- Engine Balance: Internal
- Engine Block Material: Cast iron
- Main Bolt Style: 6-bolt
- Main Journal Type: Chevy LS
- Part Type: Short Block Engines
- Piston Material: Forged aluminum
Technical Specifications
Product data| Product | ATK SP38-G4 LS 408 Short Block |
|---|---|
| SKU | SP38-G4 |
| Actual Engine Displacement | 6.7L/408 |
| Assembled | Yes |
| Brand | ATK High Performance Engines |
| Connecting Rod Beam Style | H-beam |
| Connecting Rod Material | Forged 4340 steel |
| Crankshaft Material | Forged 4340 steel |
| Crate Engine Family | Chevy LS |
| Deck Height (in.) | 9.240 in. |
| Engine Balance | Internal |
| Engine Block Material | Cast iron |
| Flexplate Included | No |
| Flywheel Included | No |
| Harmonic Balancer Included | No |
| Main Bolt Style | 6-bolt |
| Main Journal Type | Chevy LS |
| Manufacturer's Part Number | SP38-G4 |
| Notes | GM 6.0L Gen IV block with 4.030 in. bore and 4.000 in. stroke, -18cc dished pistons and 24 tooth reluctor. Naturally aspirated applications. Includes Manley forged 6.125 in. H-Beam connecting rods, upgraded ARP main studs, and ARP 8740 rod bolts. |
| Oil Pan Included | No |
| Part Type | Short Block Engines |
| Piston Material | Forged aluminum |
| Product Line | ATK High Performance Chevy LS 408 Short Blocks |
| Quantity | Sold individually. |
| Rear Main Seal Style | 1-piece |
| Remanufactured | Yes |
| Short Block Piston Style | Dish |
| Timing Cover Included | No |
| UPC | 653517518393 |
Engineered forreal-world performanceSP38-G4
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 SP38-G4 is a remanufactured Chevy LS Gen IV 408 (6.7L) stroker short block with a 6-bolt main block, 9.240-inch deck, forged 4340 crank and H-beam rods, forged +18cc dish pistons, 24-tooth reluctor and internal balance. Flexplate, flywheel, balancer, oil pan and timing cover are not included.
Specifications
- Brand: ATK High Performance Engines
- Part / Model Number: SP38-G4
- Actual Engine Displacement: 6.7L/408
- Assembled: Yes
- Connecting Rod Beam Style: H-beam
- Connecting Rod Material: Forged 4340 steel
- Crankshaft Material: Forged 4340 steel
- Crate Engine Family: Chevy LS
- Deck Height (in.): 9.240 in.
- Engine Balance: Internal
- Engine Block Material: Cast iron
- Main Bolt Style: 6-bolt
- Main Journal Type: Chevy LS
- Part Type: Short Block Engines
- Piston Material: Forged aluminum
Specifications
Actual Engine Displacement: 6.7L/408
Assembled: Yes
Brand: ATK High Performance Engines
Connecting Rod Beam Style: H-beam
Connecting Rod Material: Forged 4340 steel
Crankshaft Material: Forged 4340 steel
Crate Engine Family: Chevy LS
Deck Height (in.): 9.240 in.
Engine Balance: Internal
Engine Block Material: Cast iron
Flexplate Included: No
Flywheel Included: No
Harmonic Balancer Included: No
Main Bolt Style: 6-bolt
Main Journal Type: Chevy LS
Manufacturer's Part Number: SP38-G4
Notes: GM 6.0L Gen IV block with 4.030 in. bore and 4.000 in. stroke, -18cc dished pistons and 24 tooth reluctor. Naturally aspirated applications. Includes Manley forged 6.125 in. H-Beam connecting rods, upgraded ARP main studs, and ARP 8740 rod bolts.
Oil Pan Included: No
Part Type: Short Block Engines
Piston Material: Forged aluminum
Product Line: ATK High Performance Chevy LS 408 Short Blocks
Quantity: Sold individually.
Rear Main Seal Style: 1-piece
Remanufactured: Yes
Short Block Piston Style: Dish
Timing Cover Included: No
UPC: 653517518393
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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