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Home Engines Short Block Engines ATK High Performance Chevy 598 Dart Race Series Short Blocks SP45
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ATK High Performance Chevy LS 408 Short Blocks SP40-G4-B $2,968.00
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ATK High Performance Chevy LS3 415 Short Blocks SP67 $4,125.00

ATK High Performance Chevy 598 Dart Race Series Short Blocks SP45

$4,269.00

Engine Assembly, Short Block, 2-Piece Main Seal, Chevy, Big Block, 540, Each

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Category: Short Block Engines
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Description

Overview

Brand: ATK High Performance Engines
Manufacturer’s Part Number: SP45
Part Type: Short Block Engines
Product Line: ATK High Performance Chevy 598 Dart Race Series Short Blocks
Summit Racing Part Number: HPE-SP45
UPC: 653517258145
Crate Engine Family: Chevy Big Block
Actual Engine Displacement: 9.8L/598
Rear Main Seal Style: 2-piece
Crankshaft Material: Forged 4340 steel
Piston Material: Forged aluminum
Short Block Piston Style: Flat top
Connecting Rod Material: Forged 4340 steel
Connecting Rod Beam Style: H-beam
Engine Block Material: Cast iron
Main Bolt Style: 4-bolt
Main Journal Type: Chevy 454
Deck Height (in.): 10.200 in.
Engine Balance: Internal
Oil Pan Included: No
Timing Cover Included: No
Harmonic Balancer Included: No
Flexplate Included: No
Flywheel Included: No
Assembled: Yes
Remanufactured: No
Quantity: Sold individually.

ATK High Performance Chevy 598 Dart Race Series Short Blocks

Big power requires a solid foundation, so start your next build with one of these ATK High Performance Chevy 598 Dart Race Series short blocks. These short blocks are built, balanced, and blueprinted to be the strongest and most reliable short blocks available for your race car or hardcore street car.

ATK blocks feature:

* Dart Big M 10.2 block
* Aligned and honed main bores
* 4340 forged crankshaft
* 4.50 in. stroke
* 4340 forged H-beam connecting rods
* Forged flat-top pistons

Applications

Make: CHEVROLET
Engine Type: V8
Engine Size: 9.8L/598
Engine Family: Chevy big block Mark IV
Shipping & Delivery
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Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

    • 1204 E Yorba Linda Blvd, Placentia, CA 92870, USA
    • Phone: +1 (714) 694-3374
    • E-mail: sales@xfactorsmotorsports.com
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