CALLIES APO-31Q-CS-58X Compstar Ls Cwt Crankshaft 4.000

( Brand: Callies ), ( Manufacturer Part Number: APO-31Q-CS-58X ), ( Part Type: Crankshaft ), ( Vintage Part: No ), ( Performance Part: Yes )

Review CALLIES Compstar Ls 4.000 Stroke Cwt Crankshaft

The **Callies APO-31Q-CS 58x CompStar LS 4,000 CWT Crankshaft** represents the pinnacle of precision engineering and performance optimization, meticulously crafted for high-output, high-revving applications where reliability and durability are paramount. Designed exclusively for demanding engine builds particularly those targeting extreme horsepower and torque outputs this crankshaft is a masterpiece of aerospace-grade forging technology, ensuring unparalleled strength and fatigue resistance. The **CompStar LS** designation signifies its compatibility with a broad spectrum of performance applications, from high-performance street engines to professional racing setups, where lightweight yet robust construction is essential. With a **58x** (58mm) journal diameter, this crankshaft strikes an ideal balance between strength and weight, allowing for aggressive camshaft profiles and high-revving RPMs without compromising structural integrity. The **4,000 CWT** (counterweight tonnage) rating underscores its ability to handle substantial forces, making it an ideal choice for engines pushing beyond 1,000 horsepower while maintaining smooth operation and minimal vibration.

Engineered with **Callies APO (Advanced Process Optimization) technology**, this crankshaft undergoes a rigorous multi-stage forging and machining process, including precision grinding and dynamic balancing to tolerances of just a few thousandths of an inch. The **CompStar LS** design incorporates optimized counterweight distribution, reducing parasitic mass while maximizing rotational stability, which is critical for engines with extreme power outputs or aggressive camshaft timing. The crankshaft s **7-bolt main bearing caps** (standard on this model) provide exceptional clamping force, ensuring consistent journal alignment and minimizing the risk of catastrophic failure under extreme loads. Additionally, the **nitrided or shot-peened surfaces** (depending on the specific variant) enhance fatigue resistance, extending the crankshaft s lifespan even under the most punishing conditions.

Built to complement modern high-performance engine components, this crankshaft is engineered to pair seamlessly with aftermarket rods, pistons, and connecting rods designed for extreme durability. Whether integrated into a **LS-based engine** with a forged internals package or a **small-block Chevy** pushing 1,200 horsepower, the **APO-31Q-CS 58x** delivers the rigidity and precision required to handle the most aggressive builds. Callies reputation for innovation and reliability is embodied in this crankshaft, making it a trusted choice among engine builders, racers, and performance enthusiasts who demand nothing less than the best. With its blend of cutting-edge materials, meticulous craftsmanship, and proven performance in high-output applications, this crankshaft is not merely an upgrade it s a cornerstone of any extreme power engine.

**Pros and Cons of buying a Callies APO-31Q-CS-58X CompStar LS 4.000 CWT Crankshaft**

1. **High-Quality Material and Construction** The crankshaft is made from **forged 4340 steel**, a material known for its strength, durability, and resistance to fatigue. This ensures it can handle the stresses of high-performance applications without warping or breaking prematurely.

2. **Precision Engineering** Callies is a reputable manufacturer specializing in high-performance crankshafts for racing and performance engines. The **CompStar LS** line is designed for **LS-series engines**, meaning it is optimized for the specific journal and rod journal dimensions of GM s LS platform. This reduces the risk of clearance issues or improper fitment.

3. **Balanced and Smooth Operation** The crankshaft undergoes **dynamic balancing**, which minimizes vibration and ensures smoother operation, especially at high RPM. This is critical for engines running at elevated power levels.

4. **Compatibility with Performance Upgrades** The **4.000-inch stroke** is a popular choice for LS-based engines, offering a good balance between torque and RPM potential. It works well with **big-block LS engines** (e.g., LS7, LS9, or custom builds) and is often paired with **high-flow heads, turbocharging, or nitrous setups**.

5. **Warranty and Support** Callies provides a **limited warranty** on their crankshafts, which can offer peace of mind against manufacturing defects. Their customer service and technical support are generally well-regarded in the performance community.

6. **Aftermarket and Customization Options** The crankshaft can be paired with **aftermarket rods, pistons, and connecting rods** to further enhance performance. It is also compatible with **counterweight modifications** (if needed) for specific tuning goals.

7. **Proven Reliability in Racing** Many LS-based race engines (especially in **drag racing, top-fuel, and NHRA competition**) rely on Callies cranks due to their reputation for durability under extreme loads.

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1. **High Cost** A **4.000-inch stroke crankshaft** from Callies is not a budget-friendly option. Prices typically range between **$1,500 and $3,000 **, depending on additional features (e.g., nitrided journals, custom balancing). This makes it a significant investment, especially for hobbyists or those on a tight budget.

2. **Requires Engine Modifications** Installing this crankshaft may necessitate **rod length adjustments, piston selection, and possibly block modifications** (e.g., deck height changes, rod bolt upgrades). This adds to the overall cost and complexity of the build.

3. **Not a Drop-In Replacement** Unlike some aftermarket cranks, the **CompStar LS 4.000** is not a direct swap for stock LS cranks. It requires **custom rods, pistons, and possibly a new oil pump** to ensure proper clearance and lubrication. This means additional parts and labor costs.

4. **Maintenance and Care Required** A high-performance crankshaft demands **proper lubrication, regular inspections, and maintenance**. Neglecting oil changes, filter replacements, or failing to address vibration issues can lead to premature failure.

5. **Potential Learning Curve** If you re not experienced with **LS engine builds or high-performance tuning**, working with this crankshaft may require consulting with a mechanic or tuner to avoid mistakes in assembly or setup.

6. **Weight Considerations** While the **4340 steel** is strong, it is also **heavier than some aluminum cranks** (e.g., those from companies like Scat or JE). This can slightly reduce RPM potential in some applications, though the difference is often negligible compared to the benefits of steel.

7. **Limited Availability of Parts** Some **aftermarket components** (e.g., specific rod lengths, piston sets) may not be universally compatible, requiring sourcing from specialized suppliers.

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The **Callies APO-31Q-CS-58X CompStar LS 4.000 CWT crankshaft** is one of the best options for **LS-based high-performance and racing engines** due to its **superior material, precision engineering, and reliability**. It is ideal for **serious racers, drag strip builders, or those pursuing significant power gains** (e.g., 1,000 HP with supporting modifications).

However, it is **not a casual or budget-friendly choice**. The **high cost, required supporting modifications, and technical expertise needed** make it more suited for **dedicated builders rather than weekend hobbyists**. If your goal is **street performance with moderate power gains**, a **stock or slightly upgraded crankshaft** (e.g., a nitrided LS crank from a different manufacturer) may be a more practical option.

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- You are building a **high-performance or race engine** (e.g., **top-end LS drag car, turbocharged LS, or nitrous-powered setup**).

- You have **budgeted for the full build** (crank, rods, pistons, block mods, etc.) and are committed to a **long-term project**.

- You have access to **technical support or a trusted mechanic** to assist with installation and tuning.

- You prioritize **durability and reliability** over cost savings.

- You are on a **tight budget** and only need **mild power upgrades**.

- You lack experience with **LS engine modifications** and cannot properly support the crankshaft with the right components.

- Your primary goal is **daily driving** rather than **racing or extreme performance**.

- You prefer **easier-to-source or cheaper alternatives** (e.g., a **stock crank with nitriding, a Scat crank, or a forged LS crank from another manufacturer**).

For those who decide to proceed, **pairing it with a full supporting package** (e.g., **ARP rod bolts, high-quality oil pump, custom rods, and a tuned engine management system**) will maximize its potential and ensure longevity.

Details:

Heat Treatment Perms Case Deep Nitrite. Whether you're a racer or car enthusiast looking to enhance your engines performance, this crankshaft is reliable and durable choice.Callies Compstar LS 4.000 Stroke 8 CWT Crankshaft: Wet Sump Post short, Stroke, 2.100 Rod Journals, 24x 58x Rector Wheel. Dual linear post key ways. Features: Machined with large journal radii.

Gun Drilled Mains. The manufacturer part number APO-31Q-CS-58X ensures compatibility and optimal functionality for your vehicle. All Rod Journals Lightened. Full Internal Balance to Your Specific Assembly Weight.

part #: apo31qcs58x prices

• $1072.00-$1223.99

specifications cranshafengin:

• brand: Callies
• mpn: Apo-31q-cs-58x
• part type: Crankshaft
• vintage part: No
• performance part: Yes

shipping cranshafengin:

• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery
• transit: 2-6 Days
• class: Standard
• type: Fixed
• cost: $0.00

seller cranshafengin:

• # reviews: 26
• rating: 100.0%
• city: Clarksville,

returns cranshafengin:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

payments cranshafengin:

• other
• wallet: Apple-pay
• credit card: Discover

offer cranshafengin:

• availability: In Stock
• quantity: 1
• started: February 24, 2026
• sold: 0
• options: Ship-to-home

general cranshafengin:

• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
• condition: New

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