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 327
Casting | Years | CID | HP | Main | Notes |
3782870 | 1962-67 | 327 only | 250-375 | 2 | passenger, chevelle, corvette |
3789817 | 1962-67 | 327 | 2 | truck | |
3790721 | 1965-66 | 327 | 250-350 | 2 | Chevy II recessed oil filter boss |
3791362 | 1962-67 | 327 | 250-350 | 2 | Chevy II recessed oil filter boss |
3792563 | 1965 | 327 | 2 | ||
3794460 | 1962-64 | 327 | 2 | ||
3814660 | 1968-69 | 327 | 2 | ||
3830944 | 1963 | 327 | 2 | ||
3858174 | 1964-67 | 327 | 275-350 | 2 | passenger, chevelle, corvette, trucks |
3858180 | 1964-67 | 327 | 250-375 | 2 | passenger, chevelle, corvette |
3892657 | 1966-67 | 327 | 210-275 | 2 | Passenger/Chevelle/Corvette/Camaro |
3903352 | 1967 | 327 | 210-350 | 2 | Passenger/Chevelle/Corvette/Camaro |
3914660 | 1968 | 327 | 210-275 | 2 | Passenger/Chevelle/Chevy II/Camaro/Corvette |
3914678 | 1968 | 327 | 210-275 | 2 | Passenger/Chevelle/Chevy II/Camaro/Corvette |
3932386 | 1969 | 327 | 2 | ?? Unverified | |
3956618 | 1968-69 | 327 | 235 | 2 | Passenger |
3959512 | 1962-67 | 327 | 2 | Was also used for some replacement blocks |