Chevrolet 4.8L, 5.3L Gen III/IV, 5.7L Gen III, 6.0L, 6.2L Engine Bearings

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 ENGINE BEARINGS

CON ROD BEARING SET

MAIN BEARING SET

Part# Part#
8B663HD


8B663HXD

 
5M7298H

 
5M7298HX

 
Sizes STD, 001, 010 STD STD, 001, 009, 010, 011, 020 STD
Oil Clearance Standard + 0.001" Extra Standard + 0.001" Extra
Half Type Upper & Lower Upper & Lower
Material

Tri-metal Hardened steel backs

Tri-Metal
Min Std Shaft Size

2.099in / 53.315mm

2.5588in / 64.993mm

Max Std Shaft Size

2.1in / 53.34mm

2.5593in / 65.007mm

Min Std Tunnel Size

2.2247in / 56.507mm

2.7509in / 69.873mm

Max Std Tunnel Size

2.2252in / 56.52mm

2.7515in / 69.887mm

Max Wall at Crown

0.0619in / 1.572mm

0.0614in / 1.559mm

0.0957in / 2.43mm

0.0952in / 2.417mm

Max Overall Length

0.8366in / 21.25mm

1.0276in / 26.1mm    (7299H/HX - Flange)

0.8051in / 20.45mm  (7298H/HX)

Notes for conrods with dowel pin locators

Diagram       
(Top View) 

7299H & HX - Position 3

UPPER

LOWER

 

7298H & HX - Positions 1, 2, 4, 5

 CAMSHAFT BEARING SET
Part# 5C1000S Material Babbitt Lead
Sizes STD Notes -

 
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