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.

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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
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
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

 

 

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