Panhead models 1948-1965 general specifications

 

[table caption=”general specifications 48-54” width=”800″ colwidth=”100|100|100″colalign=”left|left|center|right|right”]
spec,E-EL,F-FL
engine type,61 C.I.OHV twin,74 c.i. OHV twin
cylinder bore,3-5/16,3-7/16
stroke,3-1/2,3-31/32
piston displacement,60.32,73.66

compression:low,E 6.5 to 1,F 6.6 to 1

compression: high,EL 7.0to1,FL7.0 to 1

horse power *,8.77,9.44

wheelbase,59 1/2,59 1/2
[/table]

* note: horsepower is N.A.C.C.. rating (estimated horsepower at 1000 rpm)

[table caption=”general specifications 55-65” width=”800″ colwidth=”100|100|100″colalign=”left|left|center|right|right”]
spec,FL,FLH
engine type,74 C.I.OHV twin,74 c.i. OHV twin
cylinder bore,3-7/16,3-7/16
stroke,3-31/32,3-31/32
piston displacement,73.66,73.66

compression ratio,F 7.25 to 1,FL 8.0 to 1

horse power SAE,55.0 @ 5400 rpm,60.0 @ 5500rpm

Torque,62.lb-ft @ 3200 rpm,65 lb-ft @ 3200rpm

wheelbase,60 inches,60 inches
[/table]

 

 model year information

48 models      49 models      50 models      51 models

52 models      53 models      54 models      55 models

56 models      57 models      58 models      59models

60 models      61 models      62 models      63 models

64 models      65 models