Page 195 - 2021-22_EngineCatalogAP

CHEVROLET BIG BLOCK
“Big M” Iron Engine Blocks
The blocks that set the standard for big block Chevrolet include Siamese bores, scalloped water jackets, redesigned oiling systems, valley head stud bosses, adequate clearances for stroker cranks, and four-bolt steel main caps.
Part No.
DRT31213344 DRT31213444 DRT31213454 DRT31213644 DRT31213654 DRT31223644 DRT31223654 DRT31223344A DRT31223444A DRT31273444VI C DRT31223454A
Description
Big M Iron Block
Big M Iron Block
Big M Iron Block
Big M Iron Block
Big M Iron Block
Big M Sportsman Iron Block Big M Iron Block
Big M Sportsman Iron Block Big M Sportsman Iron Block Big M Mk VI Iron Block Big M Sportsman Iron Block
Deck Main Bore Height Cap
4.250" 9.800" Steel 4.500" 9.800" Steel 4.500" 10.200" Steel 4.600" 9.800" Steel 4.600" 10.200" Steel 4.600" 9.800" Iron 4.600" 10.200" Iron 4.250" 9.800" Iron 4.500" 9.800" Iron 4.600" 9.800" Iron 4.500" 10.200" Iron
A Sportsman Blocks do not include freeze plugs, coated cam bearings, and dowels. B 2.125" cam journal, +.600" raised cam, .904" lifter bore
C 1-piece rear main seal
Dart Aluminum Blocks
Dart aluminum blocks deliver big power in a lightweight block. Race series blocks incorporate increased deck heights and a raised cam location. +.400" raised cam height.
Deck Main Part No. Description Bore Height Cap
DRT31264655 Aluminum Race Series 4.600" 10.200" Steel
Chevrolet 502 CID Gen VI Bare Block
Production-based Gen VI cast iron block features four-bolt main caps, standard 9.800" deck height, and 4.470"-4.500" bore range.
Deck Main
Part No. Description Bore Height
GMP19170540 † 502 Mark IV/GenVI Iron Block 4.470" 9.800"
† 1-piece rear main seal
Edelbrock Cast Iron Engine Blocks
Cap
Iron
By casting and precision machining these blocks in the U.S.A., Edelbrock can produce them to their own rigorous standards and the highest industry quality available in the mar- ket. Manufactured with 4.500" (max. recommended 4.600") bore Siamese cylinder walls, 4.500" max recommended stroke, hydraulic roller cam provisions, standard cam position, 4-bolt splayed nodular iron main caps, priority main oiling, 1- or 2-piece rear main seal, and designed to accept either 6- or 10-bolt timing cover.
Deck Main Brg.
PartNo. Description Bore Height Bore Bolts Main
EDE450000 BBC Iron Block 4.500" 9.800" 2.9375" 10 2-Piece EDE450001 BBC Iron Block 4.500" 9.800" 2.9375" 6 1-Piece
ENGINE BLOCKS
Timing Cover Rear
2021-22 ENGINE BUILDER CATALOG 193