31947211 DART Engine Block Ls Next Rotating 125 Chevy

Review DART Engine Block Ls Next 4.125 In Aluminum Chevy Rotating Assembly for CHEVY 125

The Dart 31947211 engine block is a high-performance aftermarket solution for those looking to build a powerful and reliable LS Next 4.125 Chevy engine. This engine block is specifically designed to accommodate the Gen IV LS family of engines, which includes the popular LS3, LS7, and LS9, among others.

This Dart engine block is made from 3500-series billet aluminum, which offers superior strength and durability compared to cast iron blocks. Its four-bolt main caps and eight-bolt deck ensure optimal engine rigidity and stability, reducing the risk of engine damage due to twisting or warping.

The block features a 4.125-inch bore size, which is ideal for those seeking maximum power output from their engine build. The bore size is matched with a 4.000-inch stroke, resulting in a total displacement of 364 cubic inches (5.9-liters). This displacement range is popular in high-performance applications, making this engine block a great choice for muscle cars, hot rods, and racing engines.

The Dart 31947211 engine block also features a wet-sump oiling system, which is essential for high-performance applications where oil pressure is crucial. The block's oiling system is designed to provide consistent and adequate oil pressure to keep the engine running smoothly and efficiently, even under the most demanding conditions.

Another notable feature of this engine block is its 10.5:1 deck height, which is suitable for high-compression applications. This feature allows for increased power output by allowing the use of higher-compression pistons, making it an excellent choice for those seeking maximum power gains from their engine build.

The block's surfaces are precision-machined to ensure a perfect fit and finish, ensuring that the engine components will align and fit correctly. The block also includes a billet steel crankshaft damper, which helps to reduce engine vibrations and improve overall engine balance.

The Dart 31947211 engine block is a high-quality, high-performance solution for those seeking to build a powerful and reliable LS Next 4.125 Chevy engine. Its durable construction, optimized bore size, wet-sump oiling system, and 10.5:1 deck height make it an excellent choice for muscle cars, hot rods, and racing applications where power and reliability are crucial.

Buying the Dart 31947211 engine block LS Next 4.125 for a Chevy rotating assembly comes with several pros and cons that you should consider before making a purchase.

1. High-Performance: The Dart engine block is designed for high-performance applications. It is made from 9310 alloy steel, which provides strength and durability. This makes it an excellent choice for those looking to build a powerful engine.

2. OEM-Grade Quality: The Dart engine block is manufactured to OEM-grade standards, ensuring a perfect fit and finish. This can save you time and money in the long run, as you won't need to spend additional resources on modifications or customizations.

3. Compatibility: This engine block is compatible with a wide range of Chevy engines, including the LS1, LS6, LS7, and LS9. This makes it a versatile option for those with different engine configurations.

1. Cost: The Dart engine block is more expensive than some aftermarket alternatives. However, its high-performance and OEM-grade quality justify the price for many enthusiasts.

2. Weight: The Dart engine block is heavier than some aftermarket options. This can add weight to your engine, which may affect performance and fuel efficiency. However, the added weight is a trade-off for the increased strength and durability.

3. Availability: The Dart engine block may not be as readily available as some aftermarket alternatives. This could result in longer lead times and delays in your build project.

The Dart 31947211 engine block LS Next 4.125 is an excellent choice for those looking to build a high-performance Chevy engine. Its OEM-grade quality, compatibility with a wide range of engines, and strength and durability justify the higher cost. However, it may be less available than some aftermarket options and is heavier than some alternatives. Ultimately, the decision to purchase this engine block depends on your specific build requirements and priorities.

If you are looking to build a high-performance Chevy engine and prioritize strength, durability, and OEM-grade quality, then the Dart 31947211 engine block LS Next 4.125 is an excellent choice. While it may be more expensive and heavier than some alternatives, its benefits outweigh the drawbacks for many enthusiasts. However, if you are on a tight budget or prefer a lighter engine block, then you may want to consider other aftermarket options.

Details:

Used Moliere electric water pump with -4 stem hose. Used mad coils Taylor plug wires. New comp cams three bolt cam. Used smith race craft motor plate, machined to mount an f body alternator.

New Callie's 6.125 long rod, l-19 bolts. New Dart ls next aluminum skirted block, pn u31947212, 4.125 bore.904 lifter bores, Cleveland mains and 1/2 inch head studs. New Callie's counter weight 4.00 stroke crank, 58x rector pn APO-31w-mg. Save yourself the wait time.

specifications engineblocksam:

• for models: 125
• for makes: Chevy
• brand: Dart
• mpn: 31947211
• type: Engine Block
• manufacturer warranty: 30 Days
• material: Aluminum
• universal fitment: Yes
• upc: 807051019612

seller engineblocksam:

• # reviews: 317
• city: vista, california
• rating: 100.0%

payments engineblocksam:

• wallet: apple-pay
• other
• credit card: diners-club

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks

offer engineblocksam:

• sold #: 16
• quantity: 1
• availability: in stock
• options: ship-to-home
• started: august 31, 2025

shipping engineblocksam:

returns engineblocksam:

• time: 30 days
• paid by: buyer
• policy: returns accepted