Clevite 77 Chevrolet High-Performance Connecting Rod Bearings

H Series

• Best to start with when unsure which bearing to choose
• Medium level of eccentricity and high crush
• Enlarged chamfers for greater crankshaft fillet clearance
• Made without flash plating for better seating
• Use with crankshafts that have oversized fillets
• Use with engines that run mid-high RPM range
• Contact patterns should ideally cover 2/3 to 3/4 of the bearing surface

P Series

• Typically the greatest level of eccentricity
• Rods and mains have high crush for maximum retention
• Most are fully grooved to maximize oil flow to rod bearings
• Reduced overlay thickness to prevent overlay fatigue
• Use where extremely high RPMs cause severe rod bore close-in
• Use where higher eccentricity is desired to narrow bearing contact patterns

V Series

• This series essentially duplicates Clevite's former Vandervell parts
• Typically low to medium eccentricity
• Not available with oversized chamfers
• No flash plating on the steel back
• All Clevite main bearing sets use a single-piece thrust bearing
• Narrowed parts available to accommodate increased crankshaft fillet clearance
• Lead-indium overlay offers slightly better conformability

M Series

• These are special purpose bearings having a nominal .005" thick Babbitt lining on a hardened steel back
• They are intended mainly for Blown Fuel engines where severe crankshaft deflections cause edge loading of the bearings
• Under these operating conditions bearing service life will be very short
• Frequent inspection and replacement is recommended

Part Number Key

• H - High-Performance
• HD - High-Performance bearing with dowel hole
• HK - High-Performance bearing with moly/graphite coating
• P - Standard Clevite 77 tri-metal bearing
• M - Blown Fuel Engine bearing for severe crankshaft deflections & edge loading
• N - High-Performance Narrowed for greater crankshaft fillet clearance
• HG - High-Performance full angular grooved bearing
• V - High-Performance with Lead Indium overlay (On Main Sets this indicates partial groove also)
• VG - High-Performance with Lead Indium full angular grooved bearing
• D - Bearing has a dowel hole
• K - Tri-Armor coated bearing
• X - Bearing has .001 more oil clearance than standard
• XX - Bearing has .002 more oil clearance than standard
• A or AL - Indicates Aluminum bearing material

Note: Clevite main and cam bearings are priced as sets; rod bearings are priced each unless noted.