Wallace Racing
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All Pontiac Exhaust manifolds
Pontiac High Performance Exhaust Manifolds
HIGH PERFORMANCE PONTIAC EXHAUST MANIFOLDS
D-Port
Year
Application
Part
#
Side
Port/Flange
Holes
Miscellaneous
1957
F.I.
524883
R
6
2
523539
L
6
2
1958
F.I.
530374
R
6
2
528598
L
6
2
1958
T395A
530961 (2)
R
6
2
cast iron headers
530965
L
6
2
1959-60
420A-425A
532021
R
6
2
532216
L
6
2
1960
389 SD
535504
R
6
2
cast iron headers
535505
L
6
2
1961-62
425A
537454
R
6
2
R-req. 537242 elbow
537455
L
6
2
1961-62
389 SD
Cast iron 4 into 2
421 SD
540297
R
6
4+2+2
61 SD-no collectors
540298
L
6
4+2+2
62 389-421 SD uses iron
543496 (R) 543497 (L)
collectors with 540306 and
544127 heads.
1962
421 SD
543053
R
6
4+2+2
62 421 SD aluminum 4
543054
L
6
4+2+2
into 2. Uses same iron
collectors as 62 iron
manifolds.
1963
421 SD
9772001
R
6
4+2+2
63 421 SD cast iron 4
(Cat.)
9772002
L
6
4+2+2
into 2 for 9771980 heads.
Same cast iron collectors as
62 iron.
1963
421 SD
9772521
R
6
4+2+2
63 421 SD aluminum 4
(Cat.)
9772522
L
6
4+2+2
into 2 for 9771980 heads.
Uses aluminum collectors
9772354 (R) 9772355 (L).
1963
421 SD
9772147
R
6
4+2+2
1963 421 SD stamped
(NASCAR)
9772148
L
6
4+2+2
Stainless steel headers.
Uses aluminum collectors
9772218 (R19772219 (L).
1963
421 SD
6
3
Steel Tri-y headers.
(Tempest)
6
3
Single 3 bolt outlet to side
exit collectors. Collectors
joined by balance pipe with
single outlet to muffler.
1963-64
421 H.O.
545106
R
6
2
R-requires elbow
537455
L
6
2
537242.
1965-67
421/428 H.O.
9779493
R
6
2
R-requires 9779559
9779495
L
6
2
oil filter adapter.
1967
FB 400 RA
9779493
A
6
2
R-requires 9794111
9779495
L
6
2
oil filter adapter.
1967
GTO 400 RA
9777641
R
5
3
Fits all 64-67 A-body
9777646
L
5
2
and most 68-76 A & 70-79
F.
1968
400 RA FB
9791607
R
6
2
R-requires 9779559
& 428 H.O.
9779495
L
6
2
(428) or 9799411 (FB) oil
filter adapter.
HIGH
PERFORMANCE PONTIAC EXHAUST MANIFOLDS
D-Port
Year
Application
Part
#
Side
Port/Flange Holes
Miscellaneous
1968
GTO
400
RA
9777641
R
5
3
R-same as 67 GTO
RA
9791637
L
5
2
1969
GTO
400
RA
9797072
R
5
3
(RA 111)
9791637
L
5
2
L-same as 68 GTO
RA
1969
428 H.O.
9797073
R
6
2
FB 400 RA 111
9779495
L
6
2
L-same as 65- 68 HO.
FB
1970
GTO 400 RA 111
9799720
R
3
3
FB 400 RA 111
478140
L
3
2
Round
Port
1968
GTO
400 RA
11
9794033
R
5
3
9794035
L
5
2
1968
FB 400 RA 11
9794036
R
6
2
9794038
L
6
2
1969
GTO 400 RA IV
9797075
R
5
3
9794035
L
5
2
L-same as 1968
(A)
1969
FB 400 RA IV
9797074
R
6
2
9797038
L
6
2
L-same as 1968
(F)
1970
FB & GTO
9799721
R
3
3
All 1970 and
later
400 RA IV
478141
L
3
2
manifolds are 3 bolt
port.
Except 455 SD.
1971-72
FB & GTO
9799721
R
3
3
R-same as 1970 A
& F
455 H.O.
478141
L
3
2
L-same as 1970 A
& F
1973-74
FB 455 SD
490802
R
5
3
490803
L
5
2
1975
FB 455
496002
R
5
3
495624
L
5
2
