'64 1/2 Mustangs
How to Tell the Difference
If it's a fastback, it isn't a 64 1/2 - those didn't become available until '65.
Standard wheel size for 1964 was 13 inch
Look at the hood - most have an "unimproved" or uncrimped hood with beveled headlamp bezels
Look under the hood for:
- Generator charging system - unique to 64
- Large frame-mounted horns behind the radiator
- Horn relay under voltage regulator
- Radiator support with battery cooling vents
- Master cylinder with brake light switch
- hood hinges painted gloss black
- Eaton power steering pump (you will find both an internal and external reservoir, depending on whether or not the car was air conditioned)
- The 289 HiPo had an aluminum water pump
- A number of both 260 and 289 engines had cast-iron water pump pulleys
- The 64 1/2 engines 170 CI 6 cyl., 260 V-8 2V (164 HP), 289 V-8 4V (210 HP) and beginning June of 64, a 289 HiPo (271 HP)
- V-8 engines had a 5 bolt bell housing
- Early V-8s also had a narrow transmission bolt pattern
Interior
- Some had an "A" on the vent knob, but not all
- Cruise-O-Matics were fitted with a smaller shifter handle, but not all of them were produced this way
- The 64-1/2 had a one model year only steering wheel. The slippers are different on 64 1/2
- The same is true of 64-1/2 turn signal switch (slippers are different)
- The carpet runs across the floor to the rocker panel, finished with a vinyl covering to the sill plates
- Non-adjusting passenger seat (Mustangs manufactured before May 8, 1964)
Check the trunk for:
- Slotted spare tire hold-down
- Ratchet lug wrench (not in every case)
- Pigtail tail light sockets