Pontiac Exhaust Manifold Cast Numbers

YEAR PART NUMBER ENGINE DESCRIPTION
1957523539347LH FI
1957524883347RH FI
1958528598370LH FI
1958530374370RH FI
1958530961389RH T395A
1958530965389LH T395A
1959-60532021389RH 420A, 425A
1959-60532216389LH 420A, 425A
1960535504389RH SD
1960535505389LH SD
1961-62537454389RH 425A
1961-62537455389LH 425A
1961-62540297389RH SD
1961-62540297421RH SD
1961-62540298389LH SD
1961-62540298421LH SD
1962543053421RH Aluminum SD
1962543054421LH Aluminum SD
19639772001421RH SD
19639772002421LH SD
19639772147421RH NASCAR steel SD
19639772148421LH NASCAR steel SD
19639772292421LH SD
19639772521421RH Aluminum SD
19639772522421LH Aluminum SD
1956 521624 P/8 RH
1956 521630 P/8 LH
1957 523537 P/8 RH
1958 528595 P/8 except FI - T395A RH
1959 537508 P/8 except T420A-T425A RH
1959 532311 P/8 LH
1959 532312 P/8 RH
1959 532215 P/8 T420A-T425A RH
1960 537508 P/8 except T420A-T425A RH
1960 532312 P/8 except T420A-T425A LH
1960 532311 P/8 LH
1960 532215 P/8 T420A-T425A RH
1961 537508 T/4 1
1961 1193697 T/8 LH
1961 537508 P/8 except 425A & SD RH
1961 538238 P/8 except 425A & SD LH
1961 537453 P/8 425A RH
1962 537508 T/4 1
1962 1193697 T/8 LH
1962 537508 P/8 except 425A & SD RH
1962 538238 P/8 except 425A & SD LH
1962 537453 P/8 425A RH
1963 ? T/4 RH
1964 9773442 T/8 LH
1963-64 545467 T/8 RH
1964 9773442 P/8 except 421 HO LH
1963-64 545470 P/8 except 421 HO RH
1963-64 545108 P/8 421 HO RH
1963-64 537455 P/8 421 HO LH
1964-65 3918982 T/6 1
1965-66 9779032 T/8 LH
1965-67 9779033 P/8 except 421 HO & 428 HO LH
1965-67 9779493 421 HO & 428 HO RH cast#-9779494
1965-69 9779495 P/8 HO LH
1966-68 545977 T/6 F/6 1BC 1
1966 9782615 T/6 4BC 1
1964 545467 389 LEFT GTO
1964 9773442 389 Right GTO
1965 9779032 389 LEFT GTO
1965 9779328 389 RIGHT GTO
1966 9779032 389 LEFT GTO
1966 9779328 389 RIGHT GTO
1967 545977 ALL 6 CYL - 1 BC SUP 9782252
1967 9786239 ALL 6 CYL - 4BC
1967 9779328 ALL 8 CYL- EXC 400 ENGINE HO OR RAM AIR RIGHT
1967 9794320 ALL 8 CYL - EXC 400 ENGINE HO OR RAM AIR RIGHT
1967 9777755 ALL 8 CYL - EXC 400 ENGINE HO OR RAM AIR LEFT
1967 9779493 400 RAM AIR ENGINE RIGHT
1967 9779495 400 RAM AIR ENGINE LEFT
1967 9777641 400 360 HP & RAM AIR GTO RIGHT
1967 9777646 400 360 HP & RAM AIR GTO LEFT
1967 9779032 400 LEFT GTO
1967 9779328 400 RIGHT GTO
1968 9794107 ALL 6 CYL - 1BC SUP 9790445
1968 9790443 ALL 6 CYL - 4BC
1968 9791607 ALL WITH RAM AIR - WITH ENGINE ID CODE -WI- OR -XN- RIGHT
1968 9779495 ALL WITH RAM AIR - WITH ENGINE ID CODE -WI- OR -XN- LEFT
1968 9794036 ALL WITH RAM AIR - WITH ENGINE ID CODE -WU- OR -XT- RIGHT
1968 9794038 ALL WITH RAM AIR - WITH ENGINE ID CODE -WU- OR -XT- LEFT
1968 9777641 400 400 HO & RAM AIR III GTO RIGHT (LONG BRANCH)
1968 9777755 350/400 LEFT FB
1968 9779032 400 GTO LEFT
1968 9779328 400 GTO RIGHT
1968 9779493 400 400 HO & RAM AIR I RIGHT FB (ALTERNATE P/N)
1968 9779495 400 400 HO & RAM AIR I LEFT FB
1968 9790443 250 4 BBL SPRINT (FB)
1968 9791607 400 400 HO & RAM AIR I RIGHT FB
1968 9791637 400 400 HO & RAM AIR III GTOLEFT (LONG BRANCH)
1968 9794033 400 RAM AIR II GTO RIGHT (ROUND PORT)
1968 9794035 400 RAM AIR II GTO LEFT (ROUND PORT)
1968 9794036 400 RAM AIR II FB RIGHT
1968 9794038 400 RAM AIR II FB LEFT
1968 9794107 250 1 BBL (FB)
1968 9794320 350/400 RIGHT FB
1969 545991 ALL 6 CYL- 1BC SUP 9797689
1969 9790443 ALL 6 CYL-4BC
1969 9796992 ALL 350 ENGINE RIGHT
1969 9796155 ALL 350 ENGINE LEFT
1969 9796992 ALL 400 ENGINE - EXC HO OR RAM AIR RIGHT
1969 9796155 ALL 400 ENGINE - EXC HO OR RAM AIR LEFT
1969 9779495 ALL 400 HO ENGINE LEFT
1969 490142 350/400 FB RIGHT STANDARD
1969 490144 350/400 FB LEFT STANDARD
1969 9779495 350/400 FB 350 HO & 400 HO & RAM AIR III LEFT
1969 9782810 400 LEFT GTO
1969 9790137 250 4 BBL SPRINT (FB)
1969 9791637 400 RAM AIR GTO LEFT
1969 9794035 400 RAM AIR IV GTO LEFT (ROUND PORT)
1969 9796992 400 RIGHT GTO
1969 490144 400/428 LEFT
1969 9797038 400 FB RAM AIR IV LEFT (ROUND PORT)
1969 9797072 400 RAM AIR III GTO RIGHT
1969 9797073 350/400 FB 350 HO& 400 HO & RAM AIR III RIGHT
1969 9797074 400 FB RAM AIR IV RIGHT (ROUND PORT)
1969 9797075 400 RAM AIR IV GTO RIGHT (ROUND PORT)
1969 9797689 250 1 BBL (FB)
1970 3918982 6 CYL
1970 9796992 8 CYL EXC RAM AIR RIGHT
1970 480602 8 CYL EXC RAM AIR LEFT
1970 478141 8 CYL RAM AIR IV OR SUPER DUTY -LEFT
1970 478140 400 RAM AIR III FB LEFT
1970 478141 400 RAM AIR IV FB LEFT (ROUND PORT)
1970 478141 400 RAM AIR IV LEFT (ROUND PORT) FB & GTO
1970 490142 350/400 FB RIGHT STANDARD
1970 490143 350/400 FB LEFT STANDARD
1970 490144 400/455 B&G LEFT
1970 9782810 400/455 LEFT
1970 9791637 400 RAM AIR 3 LEFT
1970 9796992 400/455 RIGHT
1970 9797072 400 RAM AIR 3 RIGHT
1970 9799720 400 RAM AIR III FB RIGHT
1970 9799721 400 RAM AIR IV FB RIGHT (ROUND PORT)
1970 9799721 400 RAM AIR IV RIGHT (ROUND PORT)
1971 3918982 6 CYL
1971 3748781 6 CYL ENG
1971-74 490142 350/400/455 FB RIGHT STANDARD
1971-74 490143 350/400/455 FB LEFT STANDARD
1971 9796992 8 CYL EXC 455 HO ENG RIGHT
1971 480602 8 CYL EXC 455 HO ENG LEFT
1971 478141 455 HO LEFT SIDE
1971 9799721 455 HO RIGHT SIDE
1972 6270070 6 CYL ENG LESS STUDS
1972 3748781 6 CYL ENG
1972-74 490144 350 X-body LEFT
1972 9796992 400?/455 RIGHT
1972 480602 400?/455 LEFT SIDE
1972 478141 455 HO LEFT SIDE
1972 9799721 455 HO RIGHT SIDE
1973 480602 350/400 FB LEFT
1973 490802 455 SD FB RIGHT
1973 490803 455 SD FB LEFT
1974 490802 455 SD FB RIGHT
1974 490803 455 SD FB LEFT
1977/78 495986 400 FB W72 RIGHT
1977 499623 400 FB W72 LEFT
1978/79 10002755 400 FB W72 LEFT (cast #10002754)