fits model: St-4, 454, 500. make: Chevy.

( Brand: Speedmaster ), ( Manufacturer Part Number: PCE276.1132 ), ( Part Type: Crankshaft ), ( Manufacturer Warranty: 1 Year ), ( Material: Steel )
The Speedmaster PCE276.1132 is a top-tier, forged steel crankshaft specifically designed for Chevy Big-Block 454 engines, offering an unparalleled blend of power, durability, and precision. This crankshaft, a testament to Speedmaster's commitment to performance engineering, is meticulously crafted to cater to the demands of enthusiasts seeking unrivaled performance from their BBC 454 engines.
This crankshaft features an 8-counterweight design, which is strategically engineered to optimize rotational mass distribution, thereby reducing vibration and enhancing the smoothness of the engine's operation. The counterweights are sturdily constructed with a ST-4.500 grade of steel, ensuring exceptional strength and durability under the most demanding conditions.
The Speedmaster PCE276.1132 crankshaft is equipped with 4340 chromoly steel rods, renowned for their exceptional toughness and resistance to fatigue. This material choice guarantees that the crankshaft can withstand the high rpm and horsepower output of high-performance engines, ensuring a long lifespan even under heavy usage.
In terms of design, this crankshaft showcases a polished finish, adding a touch of elegance to its robust and functional construction. This polished finish not only enhances the aesthetic appeal but also aids in reducing friction between moving parts, contributing to the crankshaft's overall efficiency.
In conclusion, the Speedmaster PCE276.1132 forged steel crankshaft is a performance-oriented component that offers exceptional durability, smooth operation, and power output. Ideal for Chevy Big-Block 454 engines, this crankshaft is a must-have for enthusiasts looking to take their engine's performance to the next level.
1. High-quality forged steel construction ensures durability and resistance to fatigue, making it ideal for high-performance applications.
2. The 4.500-inch stroke provides increased power and torque, enhancing the overall performance of the engine.
3. The 8-counterweight design helps in balancing the crankshaft, reducing vibrations and promoting smooth operation.
4. The S-shaped design, also known as the "Scat-style" crank, is popular among hot rodders for its strength and versatility.
Cons:1. The crankshaft may be heavier than some aftermarket alternatives, which could impact acceleration and fuel efficiency.
2. The installation process can be complex and may require professional assistance, potentially adding to the overall cost.
3. The high-performance nature of this crankshaft may not be suitable for everyday driving or vehicles not designed for high horsepower.
4. Given its high-end features, the Speedmaster PCE276.1132 is a premium product and may be cost-prohibitive for some buyers.
Conclusion:The Speedmaster PCE276.1132 Chevy BBC 454 Forged Steel Crankshaft is an excellent choice for those seeking a high-performance, durable crankshaft for their hot rod or high-horsepower vehicle. Its forged steel construction, 8-counterweight design, and S-shaped profile make it a popular choice among enthusiasts. However, potential buyers should be aware of its relatively high cost, potential impact on acceleration and fuel efficiency, and the need for professional installation.
Recommendation:If you're looking to boost the performance of your high-horsepower vehicle, the Speedmaster PCE276.1132 is a solid investment. However, before making a purchase, consider your vehicle's specific needs and budget, and ensure you have the necessary resources for installation. If you're unsure about the suitability of this crankshaft for your specific application, it may be wise to consult with a professional mechanic.
Less rotational mass per counterweight, that's the best way to ensure an engine can RPM higher and faster safely but you only lighten a crank so much still be able balance your combination. These crankshafts also have a large radius on all journals for improved strength and wear resistance. Minimum Rod length in: 6.385 in. That means more power.
Notes: It is recommended that you check the bearing to crank radius clearance as well all other clearances. Speedmaster crankshafts are precision-ground, heat-treated, shot-preened, inspected, and micro-polished for superior tolerance control. Specs Brand: Speedmaster Part Number: PCE276.1132 Type: Crankshaft Product Line: 4340 Forged Steel Rear Main Seal Style: 2-piece Engine Stroke in: 4.500 in. Tool: Striker Combinations, Speedmaster forged standard weight crankshafts are designed for street or race engines with substantially increased horsepower.
Rod bearings may need to be chambered or alternatively use narrow rod. The reduced amount of mass in each counterweight allows the crank to spin harder, faster more efficiently. Main Journal Diameter in: 2.749 in. Our line of 8 counterweight performance 4340 crankshafts are the answer, by adding two counterweights to crankshaft we effectively reduce size other 6.
Speedmaster crankshafts are also nitrite-hardened for superior wear resistance, have straight-shot and chambered oil holes, feature lightening holes in all rod throws. Balance Bolt Thread Size: Standard Crankshaft Snout Style: Quantity: Sold individually.