The Engine Block Casting code is one of the best ways to identify a Chevy engine block. This engine Casting number is usually found at the rear of the block on the left or drivers side on top of the bellhousing flange.

View Big Block Engine Casting Codes

Chevy Big Block Engine Block Codes for CID 454

Casting Years CID Main Comment
10051107 454 4 Mark IV, Bowtie, 9.8 deck, siamesed bores, 4.25-4.50 bore
10069286 1990-1991 454 4 Mark IV, Short deck
10114182 1991-up 454 4 Generation V
10134366 454 4 Bowtie, Generation V, Tall deck
10185050 454 4 Bowtie, Generation V, Short deck
10237297 1996-up 454 4 Vortec 7400, L-29 Generation VI
12550313 1991-up 454 4 Generation V crate motor, Generation VI 4.25 bare block, fuel pump boss
12561357 1996-up 454 4 Generation VI
1401544 1975-87 454 2/4 truck useage casting number may also be 14015445
14015443 1987-1990 454 2/4 Mark IV, Truck or Motorhome
14015445 1978-1990 454 2/4
14044807 454 4 Bowtie, Mark IV, CNC prep, Tall deck, 4.25 bore or 4.495 bores
24502504 454 4 Bowtie, Generation V, Race prep, 9.8 short deck height
24502506 454 4 Bowtie, Generation V, Race prep, 10.2 tall deck height
345014 1974-86 454 truck
346236 1974-76 454 2 Chevelle, Monte Carlo
359070 1974-90 454 truck
361959 1973-85 454 car & truck
3963512 1970-72 454 2/4 345, 360, 365, 390, 425, 450, Chevelle, Corvette, Monte Carlo
3963513 1973-76 454
3969854 1969-73 454 2/4
3999289 1972-78 454 2 Chevelle, Corvette, Monte Carlo, truck