1964 1/2 & 1965 Differences

This is a real nice example of a genuine 1964 1/2 Mustang Coupe. This car is finished to a high standard with a little resto-mod added in as the door have electric windows, which have been done quite nicely using GM switches.

1964 1/2 & 1965 Differences

How can we tell this is a genuine ’64 1/2 model, there are some very subtle differences that we will point out here on the car. Some or all of these may appear on your car for a 64 1/2 model. It is a known fact that the product line would use up what it had from the Falcon to Mustangs. It’s not inconceivable that consecutive number cars would have different fixings as the parts were used up and replaced by the new fabricated Mustang parts.



March 1964 = C                    April 1964 = D                   May 1964 = E                   June 1964 = F

July 1964 = G                        August 1964 = H               September 1964 = J        October 1964 = K

November 1964 = L             December 1964 = M


January 1965 = A                 February 1965 = B            March 1965 = Q               April 1965 = R

May 1965 = S                        June 1965 = T                    July 1965 = U                   August 1965 = V

Date Timeline.

Production began March 9, 1964 and ended August 17,1964

Only Coupes and Convertibles were manufactured during this period

Only Generator equipped cars were produced during this period

Date codes are OCO through OHO, (found on the VIN Data plate)


Engine Displacement & Code.

170 cubic inch 6cyl 1bbl “V”

260 cubic inch 8cyl 2bbl “F”

289 cubic inch 8cyl 4bbl “D”

289 cubic inch 8cyl 4bbl “K” (Available in June of 1964)

Under the Hood:


The first thing is the “Generator” and not an alternator. The generator sits quite high up on the block rather than the traditional place to the left of the block under the rocker covers. (Note towards the bottom of the picture here.)


Dip Stick.

This is mounted on the passenger side and is very long. See pic above.


The traditional place for the horns were larger and located on the front frame and not bolted to the front behind the grill at the front. The twin horns also had the relays on the side of the inner wing to cope with the larger horns. (Unfortunately these are not the correct horns shown here.)


Power Steering.

The power steering is called an “Eaton” model and is a very distinctive design before the more horizontal barrel design was used later on.


Brake Reservoir.

The brake switch is mounted on the on the master cylinder itself.


Body Work:


The hood has stiffening skirts (flanges) and is quite different to the ’65 onwards.


Headlight Extensions.

The headlight extensions have a bevels that match the profile of the hood.


Hood Bumper Stops.

These rubbers are recessed with a cross head screw and not a domed. (See pic above).

Gas Cap.

The fuel gas cap has no security cable


The fender “Mustang” logo was 4 3/8″ long but was later lengthened to 5″


Door Locks knobs.

The Door knobs are colour-keyed to interior, changed to chrome in 1965

Fresh Air Vent.

The knob under the dash for the Fresh air on the drivers side is marked with a White “A”



Instrument Cluster has Red “GEN” light (Generator), later 1965 models had Red “ALT” light (alternator)


Heater Blower.

The heater blower is two speed with the “OFF” position located in centre


The carpet had colour-keyed rubber heel pad, no toe pad, as in later models

The carpeting stops at rocker stiffener plate, colour-keyed vinyl under door sill plate



There is a smaller “T” handle on automatic transmission equipped cars. (See above)

Seat Belts.

The front Seatbelts are secured with an eye bolt


The passenger seat was fixed into position with no fore/aft adjustment



7 Responses to 1964 1/2 & 1965 Differences

  1. April says:

    Very helpful on the 64 1/2 – 65 I am having a dilemma about..

    Liked by 2 people

  2. David says:

    I have what I believe to be one of the last 64.5 cars. purchased new by my grandfather from Deel Ford in Miami. I have the original order form and Florida registration. I purchased the car in 1985 from my grandparents. I have owned it for 35 years. it is an interesting mix of 65 and 64.5 being built August 17, 1964. Wimbledon white with black comfort weave interior, white moon grain headliner, factory air, radio delete and a top loader HEH-P code 4 speed to an alternator 289 with 2.80 rear end. dealer optioned rear seat belts. No side view windows, factory lap belts

    Liked by 2 people

  3. Mark Darch says:

    The wiring harness changed spoted by taillight connections, consequently taillights don’t interchange with 65! 64 had one sided key, 65 is 2 sided, behind the back seat side panels my 64 had access holes for rear window adjustment that were cut in with a torch, which was either a preproduction car or maybe all 64s had this strange access hole ???

    Liked by 2 people

  4. Chris says:

    The passenger seat thing only applies to all vinyl seats the cloth and vinyl seats were an upgrade and passenger seat does move

    Liked by 1 person

  5. Sonny Vick says:

    another difference was the air vents in radiator supports to cool Battery-alternaters did not have cooling vents

    Liked by 1 person

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