Pontiac V-8 Crankshafts
Pilot
bearing # 7109 is 1.3780"OD x 0.5906"ID x 0.3543"W
Starting around 1966-1967, not all cranks used with automatic transmissions were
machined for a pilot bearing.
Year
CID
App.
Material
Part#
Cast #
Marks
Stroke
Mains
Rods
Snout Length
Flywheel Register
Notes
1955
287
All V8
Forged Steel
518047
3.25
2.50
2.25
3.00
2.600
1956
317
All V8
Forged Steel
521602
3.25
2.50
2.25
3.00
2.600
1957
347
All V8
Forged Steel
530048
3.5625
2.623
2.25
3.00
2.600
1957?
347
V8
Arma-Steel
523206
3.5625
2.623
2.25
3.00
2.600
cast cranks found with this number
1958?
370?
V8
Arma-Steel
528527
3.5625
2.623
2.25
3.00
2.600
cast cranks found with this number
1958
370
All V8
Forged Steel
528527
3.5625
2.623
2.25
3.00
2.600
1959
389
Arma-Steel PMI
531369
3.75
3.00
2.25
3.00
2.600
1959
389
SD
Forged Steel
533038
533038
3.75
3.00
2.25
3.00
2.600
Limited production
1960
389
Arma-Steel PMI
531369
3.75
3.00
2.25
3.00
2.600
1960
389
SD
Forged Steel
533038
533038
3.75
3.00
2.25
3.00
2.600
Limited production
1961
389
Arma-Steel PMI
3.75
3.25
2.25
3.00
2.600
1961
389
SD
Forged Steel
541649
541649
3.75
3.00
2.25
3.00
2.600
Limited production
1961
421
SD
Forged Steel
542990
542990
4.00
3.25
2.25
3.00
2.600
Limited production
1962
389
Arma-Steel PMI
531369
3.75
3.00
2.25
3.00
2.600
1962
389
SD
Forged Steel
541649
541649
3.75
3.00
2.25
3.00
2.600
Limited production
1962
421
Arma-Steel PMI
4.00
3.25
2.25
3.00
2.600
1962
421
SD
Forged Steel
542990
542990
4.00
3.25
2.25
3.00
2.600
Limited production
1963
326
Tempest
Arma-Steel PMI
545585
3.75
3.00
2.25
3.00
2.760
1963
389
Arma-Steel PMI
544191
3.75
3.00
2.25
3.00
2.760
1963
421
Arma-Steel PMI
9770488
4.00
3.25
2.25
3.00
2.760
1963
421
SD
Forged Steel
542990
542990
4.00
3.25
2.25
3.00
2.760
Limited production
1964
326
Arma-Steel PMI
9773382
3.75
3.00
2.25
3.50
2.760
1964
389
Arma-Steel PMI
9773383
3.75
3.00
2.25
3.50
2.760
1964
421
Arma-Steel PMI
9783787
9773384
4.00
3.25
2.25
3.50
2.760
1965
326
Arma-Steel PMI
9773382
3.75
3.00
2.25
3.50
2.760
1965
389
Arma-Steel PMI
9773383
3.75
3.00
2.25
3.50
2.760
1965
421
Arma-Steel PMI
9783787
9773384
4.00
3.25
2.25
3.50
2.760
1966
326
Arma-Steel PMI
9782770
9782770
3.75
3.00
2.25
3.50
2.760
1966
389
Arma-Steel PMI
9782646
3.75
3.00
2.25
3.50
2.760
1966
421
Arma-Steel PMI
9773384
4.00
3.25
2.25
3.50
2.760
late
1966
421
Nodular iron
9782769
9783787
4.00
3.25
2.25
3.50
2.760
1967
326
Arma-Steel PMI
9782770
9782770
3.75
3.00
2.25
3.50
2.760
1967
400
Nodular iron
9795480
9795480
N, CFD
3.75
3.00
2.25
3.50
2.760
1967
428
Nodular iron
9782769
9783787
4.00
3.25
2.25
3.50
2.760
late
1967
400
Nodular iron
9773524
9773524
N, CFD
3.75
3.00
2.25
3.50
2.760
early
1968
350
Nodular iron
9793573
9793573
N, CFD
3.75
3.00
2.25
3.50
2.760
late
1968
350
Nodular iron
9795479
9795479
N, CFD
3.75
3.00
2.25
3.50
2.760
early
1968
400
Nodular iron
9773524
9773524
N, CFD
3.75
3.00
2.25
3.50
2.760
1968
400
Nodular iron
9795480
9795480
N, CFD
3.75
3.00
2.25
3.50
2.760
1968
400
Ram Air II
Nodular iron
9794054
N, CFD
3.75
3.00
2.25
3.50
2.760
WU, WY, XT, XW engine codes
early
1968
428
Arma-Steel PMI
9783787
4.00
3.25
2.25
3.50
2.760
late
1968
428
Nodular iron
9782769
N, CFD
4.00
3.25
2.25
3.50
2.760
1969
303
Ram Air V
Forged Steel
546270
546270
2.87
2.50
2.25
3.50
2.760
Limited production Trans Am racing
1969
350
Nodular iron
9795479
9795479
N, CFD
3.75
3.00
2.25
3.50
2.760
1969
400
Nodular iron
9795480
9795480
N, CFD
3.75
3.00
2.25
3.50
2.760
1969
400
RAIV
Nodular iron
9794054
9795481
Arma-Steel, CFD
3.75
3.00
2.25
3.50
2.760
WH, WW, XN, XP engine codes
1969
400
RAV
Forged Steel
545671
545671
3.75
3.00
2.25
3.50
2.760
Limited production
1969
428
Nodular iron
9782769
N, CFD
4.00
3.25
2.25
3.50
2.760
1970
350
Nodular iron
9795479
9795479
N, CFD
3.75
3.00
2.25
3.50
2.760
1970
366
NASCAR
Forged Steel
Moldex
3.375
3.00
2.25
3.50
2.760
1970
400
Nodular iron
9795480
9795480
N, CFD
3.75
3.00
2.25
3.50
2.760
