CHEV 366/396/402/427/454 CI, ACL Race Series Main Bearings (5M829H)
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High-Performance ACL Race Series Main Bearings for CHEV Engines
Upgrade your engine's performance with the ACL Race Series Main Bearings, specifically designed for CHEV 366/396/402/427/454 CI engines. These bearings are engineered to endure higher RPM conditions, making them ideal for racing and high-performance applications. Suitable for popular 4, 6, and 8 cylinder engines, they offer exceptional durability and reliability.
- High Strength Overlay Plate: Features a reduced thickness for enhanced performance.
- Hardened Steel Backs: All Conrod Bearings come with hardened steel backs for added strength.
- Increased Crush: Eliminates flash plating for a more secure fit.
- 3/4 Grooving: Main Bearings are designed with 3/4 grooving to ensure optimal oil supply.
- Consistent Wall Tolerances: Provides tight and uniform wall tolerances for precision.
- Oversize Chamfers: Available where applicable to accommodate specific engine needs.
| Product Name | CHEV 366/396/402/427/454 CI, ACL Race Series Main Bearings (5M829H) |
|---|---|
| Brands | ACL |
| Engine | Big Block Chev |
| Make | Chevrolet |
Delivery & Freight
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What information do I need to match these pistons to my engine?
You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.
How should ring gaps be set for these pistons?
Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.
Are forged pistons suitable for street engines?
Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.
What are the key features of the ACL Race Series Main Bearings for Big Block Chev engines?
The ACL Race Series Main Bearings feature a high-strength overlay plate with reduced thickness for improved performance, hardened steel backs for added durability, and increased crush to ensure a secure fit. They also include 3/4 grooving for optimal oil supply and consistent wall tolerances for precision.
Do I need to modify my engine for these main bearings?
While the ACL Race Series Main Bearings are designed to fit CHEV 366/396/402/427/454 CI engines, it's essential to check for proper clearances and ensure that your engine block is machined to the correct specifications. Depending on your engine's condition and previous modifications, some honing or line boring may be required.
What RPM range are these main bearings suitable for?
The ACL Race Series Main Bearings are engineered for high-performance applications and can handle higher RPM conditions. However, the reliability and performance will depend on proper installation, machining, and overall engine setup, including tuning and oil quality.
Are these main bearings suitable for street use?
While the ACL Race Series Main Bearings are designed for racing and high-performance applications, they can be used in street engines that require enhanced durability. However, ensure that your engine is built to handle the demands of high RPM and performance driving.
What should I consider when installing these main bearings?
When installing the ACL Race Series Main Bearings, ensure that the bearing surfaces are clean and free of debris. Follow the manufacturer's specifications for torque settings and check for proper oil clearance. It is advisable to use high-quality engine oil during assembly to protect the bearings during initial startup.