models/specs

Panhead models 1948-1965 general specifications

 

general specifications 48-54
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

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

general specifications 55-65
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

 

 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