The Engine Block Casting code is one of the best ways to identify a Chevy engine block. This Casting number is usually found at the rear of the block on the left or drivers side on top of the bellhousing flange.
Engine Block Codes for CID 302, 305 or 307
Casting | Years | CID | HP | Main | Notes |
355909 | 1976-79 | 305 | 2 | ||
361979 | 1978-79 | 305 | 2 | ||
389257 | 1967 | 302 | 290 | 2 | 302, 2 bolt |
460776 | 1978-79 | 305 | 2 | ||
460777 | 1978-79 | 305 | 2 | ||
460778 | 1978-79 | 305 | 2 | ||
3892657 | 1967 | 302 | 290 | 2 | Z28 Camaro |
3914636 | 1968 | 307 | 200 | 2 | Truck/Passenger/Chevelle/Chevy II |
3914653 | 1968-73 | 307 | 2 | unverified | |
3914678 | 1968 | 302 | 290 | 2 | Z-28 Camaro |
3932371 | 1969-73 | 307 | 2 | ||
3932373 | 1968-73 | 307 | 2 | ||
3932386 | 1969 | 302 | 290 | 4 | Z-28 Camaro |
3932388 | 1969 | 302 | 290 | 4 | Z-28 Camaro Rare?-NO! See FAQ on site |
3956618 | 1969 | 302 | 290 | 4 | Z-28 Camaro |
3956632 | 1969 | 307 | 200 | 2 | Truck/Chevelle/Chevy II/Camaro |
3970010 | 1969 | 302 | 290 | 4 | Z-28 Camaro |
3970020 | 1970-73 | 307 | 2 | ||
3970024 | 1969-73 | 307 | 2 | ||
4715111 | 1980 | 305 | 2 | ||
10046164 | 1986 | 305 | CARB, RWD/4WD, 1 piece rear main seal, flat lifters, edge-bolt valve covers, hole in block for mechanical fuel pump | ||
10243878 | 1996-97 | 305 | 2 | Vortec truck, roller cam, one-piece rear seal | |
14010201 | 1980-85 | 305 | 2 | ||
14010202 | 1980-85 | 305 | 2 | ||
14010203 | 1980-85 | 305 | 2 | ||
14016381 | 1980-84 | 305 | 2 | ||
14016382 | 1979-84 | 305 | 2 | ||
14016383 | 1980-85 | 305 | 2 | Truck | |
14088551 | 1986-87 | 305 | 2 | one-piece rear main seal | |
14093627 | 1987-91 | 305 | 2 | Roller cam, one-piece rear seal | |
14094766 | 1986-up | 305 | 2 | One-piece rear seal | |
14102058 | 1987-91 | 305 | 2 | Roller cam, one-piece rear seal |