ENGINE BLOCKS
BB Chevrolet 454/502 CID Gen VI Bare Block Chevrolet Performance Production-based Gen VI cast iron blocks feature four-bolt main caps, standard 9.800" deck height, and 4.250"-4.470" bore range. Part No. Description Bore Deck Height Main Cap GMP19170538 A 454 Mark IV/Gen VI Bare Iron Block 4.250" 9.800" Iron GMP19170540 502 Mark IV/Gen VI Bare Iron Block 4.470" 9.800" Iron A 1-piece rear main seal
ENGINE BLOCK SLEEVES
Wall Thickness
Flange Thickness
Flange Diameter
Part No.
Application
Rough Bore O.D.
Length
Darton Sleeves DAR100-8007-05 Donovan BBC 700 Block 4.449" 4.750" 8.000"
0.130" 0.120" 0.105"
0.188" 0.188" 0.188"
4.897" 4.897" 4.897"
DAR100-8007
Donovan BBC 700 Block 4.490" 4.731" 8.000"
DAR100-8005-1 Donovan BBC 500 Block 4.492" 4.702" 7.250"
MAIN CAP GIRDLES
PRW Steel Main Cap Girdles PRW billet Steel main cap girdles are engineered to help eliminate the block flex and cap walk that occurs as a result of stress while under extreme loads, including nitrous oxide power bursts in high-performance engines. PRW main girdles are manufactured from premium-quality 1045 billet steel. These kits include high-quality steel studs, spacers, and nuts (limited machining may be required for proper fitment). Part No. Description Chevrolet PQX0945400 396-454 Big Block Chevrolet
MAIN BEARING CAPS
Steel Main Caps Ductile main caps use splayed outside-bolts which pull from the side walls of the block
instead of flimsy main web area. Main caps, bolts, washers, and a drill bushing are included in each kit. In addition to engines listed, main cap kits are available on a special order basis for many Chrysler, Oldsmobile, and Pontiac engines. Part No. Application Caps Block Register MIL11200 396-454 Big Block Chevrolet 4-Bolt 2 or 4-Bolt — Dart Main Caps Dart's steel, aluminum, and ductile iron main caps are designed for maximum strength, stability, and balance. Part No. Application Caps Block Register DRT32773030H BBC Ductile Iron Dart Block Only, 3 Center Caps 4-Bolt 4-Bolt —
194
2021-22 ENGINE BUILDER CATALOG
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