June 13, 2022

The NHRA Technical Department recently made changes to the blueprint specifications.

                    Buick 1977 350 170 added alternate cylinder head castings

                    Buick 1979 350 160 added alternate cylinder head castings

                    Chev 1971 350 245 added alternate cylinder head castings

                    Chev 1971 350 270 added alternate cylinder head castings

                    Chev 1971 400 255 added alternate cylinder head castings

                    Chev 72-79 350 165 added alternate cylinder head castings

                    Chev 72-79 350 175 added alternate cylinder head castings

                    Chev 72-82 350 200 added alternate cylinder head castings

                    Chev 1972 400 170 added alternate cylinder head castings

                    Chev 73-76 350 145 added alternate cylinder head castings

                        Chev 73-81 350 190 added alternate cylinder head castings

                    Chev 73-74 350 245 added alternate cylinder head castings

                    Chev 73-74 350 250 added alternate cylinder head castings

                    Chev 73-74 400 150 added alternate cylinder head castings

                    Chev 74-78 350 160 added alternate cylinder head castings

                    Chev 74-78 350 185 added alternate cylinder head castings

                    Chev 74-79 350 195 added alternate cylinder head castings

                    Chev 1974 400 180 added alternate cylinder head castings

                    Chev 1975 350 155 added alternate cylinder head castings

                    Chev 1975 350 205 added alternate cylinder head castings

                    Chev 75-81 400 175 added alternate cylinder head castings

                    Chev 76-77 350 180 added alternate cylinder head castings

                    Chev 76-77 350 210 added alternate cylinder head castings

                    Chev 77-79 350 170 added alternate cylinder head castings

                    Chev 1978 350 220 added alternate cylinder head castings

                    Chev 1979 350 225 added alternate cylinder head castings

                    Chev 1980 350 230 added alternate cylinder head castings

                    Chev 1984 350 205 added alternate cylinder head castings

                    Olds 1977 350 170 added alternate cylinder head castings

                    Olds 78-79 350 160 added alternate cylinder head castings

                    Olds 1980 350 170 added alternate cylinder head castings

                    Pont 77-79 350 160 added alternate cylinder head castings