FORD 221 255 260 289 302 5.0L, ACL Race Series Main Bearings (5M590H)
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High-Performance ACL Race Series Main Bearings for FORD Engines
Upgrade your FORD 221, 255, 260, 289, 302, and 5.0L engines with the ACL Race Series Main Bearings (5M590H), engineered to excel under high RPM conditions. These bearings are a top choice for enthusiasts and professionals seeking reliability and performance in demanding environments.
Key features include:
- High Strength Overlay Plate: Reduced thickness for enhanced durability.
- Hardened Steel Backs: Ensures robust support for all Conrod Bearings.
- Increased Crush: Eliminates flash plating for a secure fit.
- 3/4 Grooving: Optimizes oil supply to Main Bearings.
- Tight Wall Tolerances: Guarantees consistent performance.
- Oversize Chamfers: Applied where necessary for improved fitment.
Explore the full range of ACL Race Series Engine Bearings for unmatched performance and reliability. Visit ACL Race Series Engine Bearings for more information.
| Product Name | FORD 221 255 260 289 302 5.0L, ACL Race Series Main Bearings (5M590H) |
|---|---|
| Brands | ACL |
| Engine | 265 283 302 327 V8 OHV |
| Make | Ford |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
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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 is the recommended application for the ACL Race Series Main Bearings (5M590H)?
The ACL Race Series Main Bearings (5M590H) are designed for high-performance applications in FORD 221, 255, 260, 289, 302, and 5.0L engines. They excel under high RPM conditions, making them suitable for both racing and performance builds where reliability is critical.
Do I need to modify my engine block to fit the ACL Race Series Main Bearings?
While the ACL Race Series Main Bearings are designed for a precise fit, it's essential to check the main bore sizes and ensure proper clearances. Some engine blocks may require minor machining to achieve optimal fitment and performance.
What are the benefits of the 3/4 grooving feature in these main bearings?
The 3/4 grooving in the ACL Race Series Main Bearings optimises oil supply to the bearings, ensuring consistent lubrication under high-load conditions. This feature helps reduce wear and enhances overall engine reliability, especially in performance applications.
How should I install the ACL Race Series Main Bearings for best results?
When installing the ACL Race Series Main Bearings, ensure that the bearing surfaces are clean and free of debris. Follow the manufacturer's guidelines for torque specifications on main caps, and always check for proper oil clearance after installation to ensure optimal performance.
What type of oil should I use with the ACL Race Series Main Bearings?
For optimal performance with ACL Race Series Main Bearings, use a high-quality synthetic or semi-synthetic engine oil that meets the specifications for your engine. This will help maintain proper lubrication and reduce wear, especially under high RPM conditions.