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Crankshafts

 

Crankshafts

General Interchange

Year    Car / Transmission     I #
'61     std trans                29B
        auto trns                29A
'62-63  std trans                37B
        auto trams               37A
'64     Jetstar 88, std trans   289B
                    auto trans  280A
        others, std trans        37B
                auto trans       37A
'65-67  Jetstar 88, std trans   280B
                    auto trans  280A
        others, std trans       337B
                auto trans      337A
'69-71  8-350                   427
        8-455                   429

Toronado Interchange

Year    Car / Transmission     I #
'66-67  8-425                  337A
'68-71  8-455                  429

F-85 Interchange

Year    Car / Transmission      I #
'61-63  std trans               187
        auto trans              190
'64     6 cyl                   275
        8 cyl, std trans        280B
               auto trans       280A
'65     V-6-225                 275
        8-330, std trans        280B
               auto trans       280A
        8-400 (442), std trans  337B
                     auto trans 337A
'65-67  6-250                   343
        8-330, std trans        280B
               auto trans       280A
        8-400, std trans        337B
               auto trans       337A
'68-69  6-250                   343
        8-350                   427
        8-400                   428
'70-71  6-250                   343
        8-350                   427
        8-455                   429

Interchange Number to Specific Crankshaft

I #    Crankshaft         Vehicle / Notes
29A    577438, Fg 577440  Note 1: B fits A by removing pilot bushing.
                          Note 2: A fits B by machining for pilot bushing.
                          A. Olds '61 AT.
                          Note: 37A fits by including main bearings.
29B                       B. Olds '61 std trans.
                          Note: 37B fits by including main bearings.
37A    582774, Fg 582746  Note 1: B fits A by removing pilot bearing.
                          Note 2: A fits B by maching for pilot bearing.
                          A. Olds '62-63 AT.
                             Olds '64 AT exc Jetstar 88.
                          Note: 29A fits by including main bearings.
37B                       B. Olds '62-63 std trans.
                          Olds '64 std trans exc Jetstar 88.
                          Note: 29B fits by including main bearings.
187    1193645, Fg # same Buick Special '61-63 8 cyl std trans.
                          Olds F-85 '61-63 std trans
                          Tempest '61-62 8 cyl std trans.
                          Note: 190 fits but check pilot brg hole & make
                          retainer for pilot brg if necessary.
190    1193645, Fg # same Buick Special '61-63 8 cyl AT.
                          Olds F-85 '61-63 AT.
                          Tempest '61-63 8 cyl AT.
                          Note: Fits 187. See note under 187.
275 (1) 992499 Jeep       Buick Special '64-67 6 cyl.
    (2) 1378354 Buick     Jeep V-6 225 eng mdls CJ, DJ & Jeepster.
        Fg 1357898        Olds F-85 '64-65 V-6 225.
280A   230330, Fg 381919  Note: B fits A.
               & 388776   Note: It may be necessary to remove clutch
                          shaft pilot bushing or bearing.
                          A. Olds '64-67 Jetstar 88 AT.
                             Olds F-85 '64-67 8-330 AT.
280B                      B. Olds '64-67 Jetstar 88 std trans.
                             Olds F-85 '64-67 8-330 std trans.
337A   230331, Fg 384722  Note: B fits A, it may be necessary to remove
                          clutch shaft pilot bushing or brg.
                          A. Olds '65-67 AT exc Jetstar 88.
                             Olds F-85 '65-66 8-400 (442) AT.
                             Olds F-85 '67-68 8-400 AT.
                             Toronado '66-67.
337B                      B. Olds '65-67 std tans exc Jetstar 88.
                             Olds F-85 '65-66 8-400 (442) std trans.
                             Olds F-85 '67 8-400 std trans.
343
427    230905             Olds '68-71 8-350.
                          Olds F-85 '68-71 8-350.
428    230378             Olds F-85 '68-69 8-400.
429    230908             Olds '68-71 8-455.
                          Olds F-85 '70-71 8-455.
                          Toronado '68-71.

I guess this confirms that these cranks are fairly interchangable.

[ Thanks to Bill Culp for this information ]
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