Garage Sale - ACL P-Series Main Bearings - Small Block Chevy 400
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What's in the Box
ACL P-Series Duraglide tri-metal main bearings for Small Block Chevy 400 c.i. V-8.
Use P-Series main bearings in situations where higher eccentricity is desired and to provide increased oiling to rod bearings.
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Eliminates galling, metal transfer and oil starvation during initial break-in. Adheres to metal surfaces, will not drain off. Apply to bearings, gears, crankshafts, cam lobes, valve stems, lifters and all mating parts with close tolerances.
For gas, alcohol and nitro engines.
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Not to be confused with standard "passenger" car bearings, Clevite's P-Series is their oldest line of premium high performance bearings. These sets are specifically for 400 c.i. Small Block Chevy V-8 engines (1970-1980).
- Use P-Series rod bearings where extremely high RPM’s cause severe rod bore close-in.
- Use P-Series main bearings where higher eccentricity is desired to narrow bearing contact patterns and to provide increased oiling to rod bearings.
P-Series Features (Link)
- Bi-metal aluminum silicon alloy featuring fine micro-bore finish
- Mains and rods are narrowed for large radius crankshafts
- Mains are 3/4 grooved for improved oiling to the rod journals
- Greater rod bearing height improves bearing-to-bore contact/heat transfer and reduces spin potential at high RPM
- 0.015" thick top layer for superior macro particle embedability and conformability
- 40 Vickers hardness to resist overlay migration and extrusion
- 450°F heat threshold for superior protection against friction and overheating