Page 206 of GM Performance Parts 2006 Catalog by GM Parts Direct

Outer Main Bearing Bolt B O-Ring Seal A Main Bearings, 572 Engine D 204 Freeze Plug Oil Plug Kit E CYLINDER BLOCK COMPONENTS 14015334 Four-Bolt Main Bearing Cap (not shown) Heavy-duty iron four-bolt main cap is used on bearings #1, #2, #3 and #4. Semi-finished cap must be machined to register the cap in the block. Main bearing housings must be align-bored after installing new caps. A. 6264902 O-Ring Seal (sold individually) Use under the rear main bearing cap on all 1991-and-newer Gen V and Gen VI 454 and 502 engines. B. 10106460 Outer Main Bearing Bolt, Gen V Gen VI Used with Gen V and Gen VI (1991-and-newer) big-blocks with four-bolt mains. Sold individually. Order 10 per engine. 3859927 Outer Main Bearing Bolt, Mark IV (not shown) Used with Mark IV (1965-1990) cast iron big-blocks with four-bolt mains. Sold individually. Order 10 per engine. C. 10106461 Inner Main Bearing Bolt, Gen V VI Used with Gen V and Gen VI (1991-and-newer) big-blocks with four-bolt mains. Sold individually. Order 10 per engine. 3909834 Inner Main Bearing Bolt, Mark IV (not shown) Used with Mark IV (1965-1990) cast iron big-blocks with four-bolt mains. Sold individually. Order 10 per engine. D. 88962212 Main Bearings, 572 engine Complete main bearing kit for 572 block with standardsize mains. E. 12495501 Freeze Plug Oil Plug Kit Complete plug kit for new and rebuilt big-block engines, includes: brass freeze plugs, cam bearing hole plug, oil galley plugs, water outlet plug, hex-head pipe plug, cylinder head and transmission dowel pins. Inner Main Bearing Bolt C CHEVY BIG-BLOCK V-8

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