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Heads
Heads
General Interchange
Year Car / Trans I #
'61 Starfire 555
others 553
'62-63 14
'64 J88 early 645
late 681
others 14
'65 J88 681
others 693
'66 J88 723
others 724
'67 8-330 816
8-425 W/AIR 817
W/O 921
'68 8-350 819
8-455 921
'69 8-350 819
8-455, 2BC 921
4BC, 365 HP 921
4BC, 390 HP 921
'70 8-350 920
8-455, 2BC 921
4BC, 365 HP 921
4BC, 390 HP 921
'71 8-350 958
8-455 959
Toronado Interchange
Year Car / Trans I #
'66-67 725
'68-69 822
'70 375 HP 921
400 HP 926
'71 957
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F-85 Interchange
Year Car / Trans I #
'61-63 2BC 344
4BC & Jetfire 345
'64 6 cyl 642
8 cyl, early 645
late 681
'65 6-225 683
8-330 681
8-400 (442) 693
'66 6-250, W/AIR 722A
W/O 722
8-330 723
8-400 (442) 725
'67 6-250 722B
8-330, early 816
late 820
8-400
W/Outside Air Ind 821
W/O 725
'68-69 6-250 722B
8-350
W/Outside Air Ind 922
W/O 819
8-400, 2BC ('68) 921
4BC
W/Outside Air Ind 923
W/O 822
8-455 (Hurst), W/AC 923
W/O 924
'70 6-250 894
8-350
W/Outside Air Ind 925
W/O 920
8-455, 2BC 921
2BC, 442
W/Outside Air Ind 924
W/O 926
exc 442 921
'71 6-250 894
8-350 958
8-455, 2BC 959
4BC
W/Outside Air Ind 960
W/O 957
exc 442 959
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Interchange Number to Specific Head
I # Head Cast # Vehicle / Notes
14 584782 cast 583832. Olds '62-63, Olds '64 exc J88
344 577745 Olds F-85 '61-63, 2BC. Note: May substitute 345's in sets.
345 582163 Olds F-85 '61-63, 4BC & J/fire. Note: May substitute 344's in sets.
553 580419 cast 577608. Olds '61 exc Starfire.
555 582836 Olds '61 Starfire.
642 1369427 Buick Special '64 V-6 eng.
Olds F-85 '64 V-6 eng.
645 384462 Olds early '64 J88 8-330 W/CI rockers.
Olds F-85 early '64 8-330 W/CI rockers.
Note: May substitute 681 assy by including push rods & rockers.
681 387575 Olds late '64-65 W/steel stamped rockers.
Olds late '64-65 8-330 W/steel stamped rockers.
Note: May substitute 645 asy by including push rods & lifters.
683 1396787 Buick Special '65-67 V-6 225.
Jeep CJ, DJ & Jeepster ser V-6 225.
Olds F-85 '65 V-6 225.
693 387573 cast 383821. Olds '65 exc J88.
Olds F-85 '65 8-400 (442).
722 3938931 Note 1: B fits A by plugging the water temp switch hole.
A does not fit B.
Note 2: Fits 631A, 631B, 647A, 647B & 647C.
Note 3: On mdls under A & B having AIR the heads are drilled &
tapped for the air injecion reactor tube. These drilled & tapped
heads will fit models not having AIR by plugging the holes.
722A 3872708 Chevelle '66 6-230.
Chev Pass '66 6 cyl.
Chevy Trk '66 6-230, 6-250 7 6-292.
Chevy II '66 6-230.
GMC D ser 6-230 & 6-250.
Olds F-85 '66 6 cyl.
722B 3895052 Blazer '69 6 cyl.
Buick Special '68-69 6 cyl.
Camaro '67-69 6 cyl.
Chevelle '67-69 6 cyl.
Chev Pass '67-69 6 cyl.
Chev Trk '67-69 6 cyl.
Chev II '67 6 cyl
Chevy II '68-69 6 cyl.
GMC '67-69 6-230, 6-250 & 6-292.
Olds F-85 '67-69 6 cyl.
723 394189 Olds '66 8-330 (Jetstar 88).
Olds F-85 '66 8-330.
724 394190 Olds '66 8-425 (exc Jetstar 88).
725 396056 Olds F-85 '66 8-400 (442).
Olds F-85 '67 8-400 exc Outside Air Ind
Toronado '66-67
816 396054 Olds '67 8-330.
Olds F-85 early '67 8-330 eng serial prefix W & SW.
817 396055 Olds '67 8-425 W/AIR
819 230341 Olds '68-69 8-350.
Olds F-85 8-350 W/O Outside Air Ind.
820 230532 Olds F-85 late '67 8-350 eng serial prefix W & SW.
821 230369 Olds F-85 '67 8-400 W/Outside Air Ind.
822 230343 Olds '68 8-455 4BC 390 HP.
Olds F-85 '68 8-400 4BC W/O Outside Air Ind.
Olds F-85 '69 8-400 W/O Outside Air Ind.
Toronado '68-69.
894 3977568 Blazer '70-71 6 cyl.
Buick Special '70-71 6 cyl.
Camaro '70-71 6 cyl.
Chevelle '70-71 6 cyl.
Chev Pass '70-71 6 cyl.
Chev Trk '70-71 6 cyl.
Chevy II '70-71 6 cyl.
Firebird '70-71 6 cyl.
GMC '70-71 6-250 & 6-292.
Jimmy '70-71 6 cyl.
Olds F-85 '70-71 6 cyl.
Tempest '70-71 6 cyl.
920 230894 Olds '70 8-350.
Olds F-85 '79 8-350 W/O Outside Air Ind.
921 230898 B fits A.
A. Olds '67 8-425 W/O AIR.
Olds '68 8-455.
Olds '69 8-455.
Olds '69 8-455 4BC, 365 HP.
Olds F-85 '68 8-400 2BC.
B. Olds '70 8-455 2BC, 4BC 365 HP.
Olds F-85 '70 8-455 2BC, 4BC exc 442.
Toronado '70 375 HP.
922 230619 Olds F-85 '68-69 8-350 W/Outside Air Ind.
923 230612 Olds F-85 '68-69 8-400 W/Outside Air Ind.
Olds F-85 '68-69 8-455 (Hurst) W/AC.
924 230897 Olds F-85 '68-69 8-455 (Hurst) W/O AC.
Olds F-85 '70 8-455 W/Outside Air Ind.
925 230895 Olds F-85 '70 8-350 W/Outside Air Ind.
926 230896 Olds '70 8-455 4BC 390 HP.
Olds F-85 '70 442 8-455 4BC W/O Outside Air Ind.
Toronado '70 400 HP.
957 231252 Olds F-85 '71 442 8-455 4BC W/O Outside Air Ind.
Toronado '71
958 231250 Olds '71 8-350.
Olds F-85 '71 8-350.
959 231251 Olds '71 8-455.
Olds F-85 '71 8-455 2BC.
Olds F-85 '71 8-455 4BC exc 442.
960 231253 Olds F-85 '71 442 8-455 4BC W/Outside Air Ind.
[ Thanks to Bill Culp for this information ]
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