Pontiac Crankshaft Part Numbers
Technical Notes
Additional Information on Armasteel
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Abbreviations and Code information
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Armasteel |
Armasteel casting |
CFD casting |
Stamped type number |
N casting |
Crankshaft Specification Table |
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Year | Engine | Mtl. | Part# | Crank# | Marks | Stroke | Mains | Rods | Snout | Rear Hub |
Notes |
1939-1954 | all 6cyl | 506176 | 506176 | ||||||||
1946-1949 | all 8cyl | 508454 | 508454 | ||||||||
1950-1954 | all 8cyl | 513513 | 512512 | ||||||||
1955 | 287 |
FS |
518047 | 518047 | 3.25 | 2.50 | 2.25 | 2.50 | 2.600 | ||
1956 | 317 |
FS |
521602 | 521602 | 3.25 | 2.50 | 2.25 | 2.50 | 2.600 | ||
1957 | 347 |
FS |
530048 | 530048 | 3.5625 | 2.623 | 2.25 | 2.50 | 2.600 | ||
1958 | 370 |
FS |
528527 | 528527 | 3.5625 | 2.623 | 2.25 | 2.50 | 2.600 | ||
1959-1962 | 389 |
AS |
531369 | 531369 | ARMASTEEL | 3.75 | 3.00 | 2.25 | 2.50 | 2.600 | except Super Duty |
1959-1960 | 389 SD |
FS |
533038 | 533038 | 3.75 | 3.00 | 2.25 | 2.50 | 2.600 | Limited production | |
1961-1962 | 389 SD | FS | 541649 | 541649 | 3.75 | 3.00 | 2.25 | 2.50 | 2.600 | Limited production | |
1961-1963 | 421 SD | FS | 542990 | 542990 | 4.00 | 3.25 | 2.25 | 2.50 | 2.600 | Limited production (approx 2000) | |
1961-1962 | 215 | 542239 | 542239 | Tempest | |||||||
1961-1963 | 4cyl | 1193645 | 1193645 | Tempest | |||||||
1962-1963 | 421 | AS | 9770488 | 9770488 | ARMASTEEL | 4.00 | 3.25 | 2.25 | 2.50 | 2.600 | And HO engines |
1963 | 326 | AS | 545585 | 545585 | ARMASTEEL | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | Special Tempest transaxle hub |
1963 | 389 | AS | 544191 | 544191 | ARMASTEEL | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | Pontiac V8 except 421 |
1964-1965 | 6 cyl | 3864465 | 3864465 | Tempest; supplied without pilot bearing | |||||||
1964-1965 | V8 | AS | 9773382 | 9773382 | ARMASTEEL | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | Tempest including 389 Armasteel “400” |
1964-1965 | 389 | AS | 9773383 | 9773383 | ARMASTEEL | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | |
1964-1965 | 421 | 977384 | 977384 | And HO; might require different connecting rod for balance | |||||||
1966 | 421 | AS | 9773384 | 9773384 | ARMASTEEL | 4.00 | 3.25 | 2.25 | 3.00 | 2.760 | 1st Type: if using 1965 type piston different connecting rods are required |
1966-1967 | 326 | AS | 9782770 | 9782770 | ARMASTEEL | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | |
1966 | 389 | N | 9782646 | 9783786 | ARMASTEEL | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | |
late 1966 | 421 | AS | 9783787 | 9783787 | ARMASTEEL | 4.00 | 3.25 | 2.25 | 3.00 | 2.760 | |
1966-1967 | 6 cyl | 9782279 | 9782279 | Firebird and Tempest; use pilot bearing (P/N3752487) for MT | |||||||
1966-1968 | 421-428 | AS | 9783787 | 9783787 | ARMASTEEL | 4.00 | 3.25 | 2.25 | 3.00 | 2.760 | 2nd type: AS long snout |
1967-1970 | 400 | AS | 9795480 | 97954 | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | except Ram Air | |
late 1967-early 1968 | 400 | N | 9773524 | 9773524 | N | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | |
1968-1979 | 400 | N | 4813 | 4813 | N | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | both “N” crank and standard w/ 2 3/4″ flange |
early 1968 | 350 | N | 9793573 | 9793573 | N | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | |
late 1968-1970 | 350 | N | 9795479 | 9795479 | N | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | |
1968 | 400 RA | AS | 9794054 | 9794054 | ARMASTEEL | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | WU, WY, XT, XW engines |
1968-1969 | 6 cyl | 9790154 | 9790154 | Firebird and Tempest; use pilot bearing (P/N3752487) for MT | |||||||
late 1968-1969 | 428 | N | 9782769 | 9782769 | N | 4.00 | 3.25 | 2.25 | 3.00 | 2.760 | |
1969 | 303 | FS | 546270 | 546270 | 2.84 | 2.50 | 2.25 | 3.00 | 2.760 | Limited production | |
1969-1974 | 400 | N | 97954 | 97954 | N | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | 2 3/4″ flange |
1969 | 400 RAIV | N | 9794054 | 9795481 | N | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | WH, WW, XN, XP engines, 0.001 more clearance. |
1970 | 400 RAIV | N | 9794054 | 9795481 | N or ARMASTEEL | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | |
1969 | 400 RAV | FS | 545671 | 545671 | V24, $A | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | Limited production |
1970 | 366 | FS | 3.375 | 3.00 | 2.25 | 3.00 | 2.760 | Moldex forging, Limited production | |||
1970-1979 | 350/400 | 9773524 | 9773524 | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | non “N” with 2 3/4″ flange | ||
1970-1976 | 455 | 496453 | 496453 | 4.210 | 3.25 | 2.25 | 3.00 | 2.760 | |||
1970-1976 | 455 | N | 9799103 | 9799103 | N | 4.21 | 3.25 | 2.25 | 3.00 | 2.760 | Approx wt 72 lbs came both “N” and standard |
1971-1974 | 350 | N | 481379 | 4813 | N, 79 on front wt. | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | |
1971-1974 | 400 | N | 481380 | 4813 | N, 80 on front wt. | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | |
1972 | SD-455 | FS | 4.21 | 3.25 | 2.25 | 3.00 | 2.760 | Kellog forging, Limited production | |||
1973-1974 | SD-455 | N | 490164 | 490164 | N | 4.21 | 3.25 | 2.25 | 3.00 | 2.760 | W8, Y8, X8, Z8, ZJ, XD engines |
1973-1976 | 455 | N | 495030 | 496453 | N | 4.21 | 3.25 | 2.25 | 3.00 | 2.760 | Service replacement |
1975-early 1976 | 350 | N | 496452 | 496452 | N | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | Thin counterweights |
1975-early 1976 | 400 | N | 496414 | 496414 | N | 3.75 | 3.00 | 2.25 | 3.00 | 2.760 | Thin counterweights |
1975-1976 | 455 | N | 496415 | 496415 | N | 4.21 | 3.25 | 2.25 | 3.00 | 2.760 | Thin counterweights |
1975-1976 | 455 | N | 496415 | 496453 | N | 4.21 | 3.25 | 2.25 | 3.00 | 2.760 | Thin counterweights |
late 1976-1979 | 350 | N | 496452 | 496452 | N | 3.75 | 3.00 | 2.25 | 3.00 | 2.600 | Thin counterweights |
late 1976-1979 | 400 | N | 499864 | 499864 | N | 3.75 | 3.00 | 2.25 | 3.00 | 2.600 | Thin counterweights |
1977-1981 | 301 | N | 525887 | 525887 | 3.00 | 2.50 | 2.00 | 3.00 | 2.600 | End counterweights only | |
1980-1981 | 265 | N | 525887 | 525887 | 3.00 | 2.50 | 2.00 | 3.00 | 2.600 | End counterweights only |
Partnumbers as listed in Master Parts Catalog dated 1/69
YEAR(S) |
PART NUMBER |
USAGE |
NOTES: |
1939-54 |
506176 |
ALL 6 CYLINDER |
|
1946-49 |
508454 |
ALL 8 CYLIDER |
|
1950-54 |
513513 |
ALL 8 CYLIDER |
|
1955 |
518047 |
ALL |
|
1956 |
521602 |
ALL |
|
1957 |
530048 |
ALL |
|
1958 |
528527 |
ALL |
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1959-62 |
531369 |
ALL V-8 EXCEPT SUPERDUTY |
|
1961-63 |
542239 |
TEMPEST 4 CYLINDER |
USE SEAL P/N 541461 FOR MANUAL TRANS |
1961-62 |
1193645 |
TEMPEST V-8 (215 C/I) |
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1962 |
542990 |
421 |
SUPERDUTY FORGED CRANK |
1963 |
545585 |
TEMPEST V-8 |
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1963 |
544191 |
PONTIAC V-8 EXCEPT 421 |
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1963 |
9770488 |
421 & HO ENGINES |
ARMASTEEL |
1964-65 |
3864465 |
TEMPEST 6 CYLINDER |
SUPPLIED WITH PILOT BEARING |
1964-65 |
9773382 |
TEMPEST V-8 EXCEPT 389 |
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1964-65 |
9773383 |
TEMPEST & PONTIAC 389 |
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1964-65 |
9773384 |
421 & HO ENGINES |
MIGHT REQUIRE DIFFERENT CONNECTING RODS |
1966-67 |
9782279 |
FIREBIRD & TEMPEST 6 CYLINDER |
USE PILOT BEARING P/N 3752487 FOR MANUAL TRANS |
1966-67 |
9782770 |
FIREBIRD & TEMPEST 326 |
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1966 |
9782646 |
TEMPEST & PONTIAC 389 |
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1966 |
9773384 |
421 & HO ENGINES |
1ST TYPE: IF USING 1965 TYPE PISTONS, DIFFERENT CONNECTING RODS ARE REQUIRED (P/N 544956) |
1966-68 |
9783787 |
421 & 428 |
2ND TYPE |
1967 |
9795480 |
400 |
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1968-69 |
9790154 |
FIREBIRD & TEMPEST 6 CYLINDER |
USE PILOT BEARING P/N 3752487 FOR MANUAL TRANS |
1968-69 |
9793573 |
350 |
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1968 |
9795480 |
ALL 400 EXCEPT RAM AIR |
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1968 |
9794054 |
RAM AIR 400 |
WITH WU,WY,XT,XW CODED ENGINES ONLY |
1969-70 |
9795480 |
ALL 400 EXCEPT RAM AIR IV |
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1969 |
9795481 |
RAM AIR IV |
WITH WH,WW,XN,XP CODED ENGINES ONLY |
1969 |
9782769 |
428 |
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1970 |
3876840 |
CHEVY 6 CYLINDER |
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1970 |
9795479 |
350 |
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1970 |
9794054 |
RAM AIR IV |
WITH WH,WW,XN,XP CODED ENGINES ONLY |
1970 |
9799103 |
455 |
WITH XF CODED ENGINE ONLY |
1970-74 |
9799103 |
455 |
STANDARD 455 EXCEPT SUPERDUTY |
1970-74 |
9799103 |
455 |
STANDARD 455 EXCEPT SUPERDUTY |
YEAR(S) |
PART NUMBER |
USAGE |
NOTES: |
1939-54 |
506176 |
ALL 6 CYLINDER |
|
1946-49 |
508454 |
ALL 8 CYLIDER |
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1950-54 |
513513 |
ALL 8 CYLIDER |
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1955 |
518047 |
ALL |
|
1956 |
521602 |
ALL |
|
1957 |
530048 |
ALL |
|
1958 |
528527 |
ALL |
|
1959-62 |
531369 |
ALL V-8 EXCEPT SUPERDUTY |
|
1961-63 |
542239 |
TEMPEST 4 CYLINDER |
USE SEAL P/N 541461 FOR MANUAL TRANS |
1961-62 |
1193645 |
TEMPEST V-8 (215 C/I) |
|
1962 |
542990 |
421 |
SUPERDUTY FORGED CRANK |
1963 |
545585 |
TEMPEST V-8 |
|
1963 |
544191 |
PONTIAC V-8 EXCEPT 421 |
|
1963 |
9770488 |
421 & HO ENGINES |
ARMASTEEL |
1964-65 |
3864465 |
TEMPEST 6 CYLINDER |
SUPPLIED WITH PILOT BEARING |
1964-65 |
9773382 |
TEMPEST V-8 EXCEPT 389 |
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1964-65 |
9773383 |
TEMPEST & PONTIAC 389 |
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1964-65 |
9773384 |
421 & HO ENGINES |
MIGHT REQUIRE DIFFERENT CONNECTING RODS |
1966-67 |
9782279 |
FIREBIRD & TEMPEST 6 CYLINDER |
USE PILOT BEARING P/N 3752487 FOR MANUAL TRANS |
1966-67 |
9782770 |
FIREBIRD & TEMPEST 326 |
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1966 |
9782646 |
TEMPEST & PONTIAC 389 |
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1966 |
9773384 |
421 & HO ENGINES |
1ST TYPE: IF USING 1965 TYPE PISTONS, DIFFERENT CONNECTING RODS ARE REQUIRED (P/N 544956) |
1966-68 |
9783787 |
421 & 428 |
2ND TYPE |
1967 |
9795480 |
400 |
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1968-69 |
9790154 |
FIREBIRD & TEMPEST 6 CYLINDER |
USE PILOT BEARING P/N 3752487 FOR MANUAL TRANS |
1968-69 |
9793573 |
350 |
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1968 |
9795480 |
ALL 400 EXCEPT RAM AIR |
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1968 |
9794054 |
RAM AIR 400 |
WITH WU,WY,XT,XW CODED ENGINES ONLY |
1969-70 |
9795480 |
ALL 400 EXCEPT RAM AIR IV |
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1969 |
9795481 |
RAM AIR IV |
WITH WH,WW,XN,XP CODED ENGINES ONLY |
1969 |
9782769 |
428 |
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1970 |
3876840 |
CHEVY 6 CYLINDER |
|
1970 |
9795479 |
350 |
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1970 |
9794054 |
RAM AIR IV |
WITH WH,WW,XN,XP CODED ENGINES ONLY |
1970 |
9799103 |
455 |
WITH XF CODED ENGINE ONLY |
1970-74 |
9799103 |
455 |
STANDARD 455 EXCEPT SUPERDUTY |
1973-74 |
495030 |
455 SUPERDUTY |
SUPERDUTY |
1975-76 |
496415 |
455 |
CAST NODULAR IRON |
Note: 326,350,389, and 400’s have a 3.00″ main journal diameter |
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Note: 421,428, and 455’s have a 3.25″ main journal diameter |
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Note: 265 and 301’s have a 2.50″ main journal diameter. |
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This information was taken from a Pontiac Master Parts Catalog dated 11/69. |
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