fits model: 125.

( Brand: Callies ), ( Manufacturer Part Number: APU-317-CS ), ( Part Type: Crankshaft Pin ), ( Country Of Manufacture: United States ), ( Minimum Rod Length: In ), ( Crankshaft Material: Forged 4340 Steel ), ( Rear Main Seal Style: 1 Piece ), ( Reluctor Wheel: X58 )
The APU-317-CS Callies CompStar Crankshaft is a high-performance component designed specifically for LS1-LS7 engines, featuring a stroke of 4.125 inches and a pin diameter of 2.1 inches. This crankshaft is manufactured by Callies, a renowned name in the automotive performance industry, known for their dedication to quality and innovation.
The APU-317-CS is a forged crankshaft, which means it undergoes a process of heat treatment, forming, and machining to create a stronger and more durable component compared to a cast crankshaft. This forging process allows the crankshaft to withstand the extreme loads and forces produced by high-performance engines, ensuring reliable performance and longevity.
The CompStar series is Callies' line of high-strength crankshafts, featuring a proprietary nitriding process that enhances the hardness of the crankshaft's journals, main caps, and webs. This process significantly reduces wear and tear, extending the life of the crankshaft and reducing the need for maintenance.
The APU-317-CS features Callies' patented 2.1-inch pin diameter, which provides increased strength and durability over standard 2.0-inch pins. This, combined with the crankshaft's 4.125-inch stroke, allows for increased power output and torque, making it an excellent choice for high-performance applications.
In summary, the APU-317-CS Callies CompStar Crankshaft is a high-performance, forged crankshaft designed for LS1-LS7 engines. Its proprietary nitriding process and 2.1-inch pin diameter provide increased strength, durability, and power output, making it an excellent choice for enthusiasts looking to upgrade their engine's performance.
Pros of buying APU-317-CS Callies CompStar Crankshaft APU-317CS LS1-LS7 4.125 2.1 pins:1. High-quality material: The crankshaft is made of forged 4340 steel, which is known for its strength and durability.
2. Precise manufacturing: The crankshaft features 2.1-inch pins and a polished finish, ensuring precise fit and operation.
3. Wide compatibility: The APU-317CS crankshaft is compatible with LS1-LS7 engines, making it a versatile option for various vehicle applications.
4. Reputable brand: Callies is a well-known and respected manufacturer of performance engine parts, ensuring that the crankshaft meets high-performance standards.
Cons of buying APU-317-CS Callies CompStar Crankshaft APU-317CS LS1-LS7 4.125 2.1 pins:1. High cost: The APU-317CS crankshaft is a premium product and may be expensive compared to other options on the market.
2. Potential for customization issues: Since the crankshaft is designed for a specific engine, it may not be easily customized to fit other engine configurations.
3. Limited availability: Due to its high-performance nature, the APU-317CS crankshaft may not be widely available in local automotive parts stores.
In conclusion, the APU-317-CS Callies CompStar Crankshaft APU-17CS LS1-LS7 4.125 2.1 pins is a high-quality, precision-manufactured crankshaft that is compatible with a wide range of LS engines. Its high cost and limited availability are potential drawbacks, but for those seeking maximum performance and reliability, this crankshaft is a worthwhile investment. If cost is a concern, consider looking for alternative options with similar specifications that may be more affordable.
Callies compstar crankshaft APU-317cs ls1 ls7 stroke, 1 pins any questions please.