64 1/2-only stuff in the underhood area

First, Let me start by saying that there are no Mustangs with 64 year model V.I.N.s. The first Mustang, 5F08F100001, was titled as a 1965 model car. All of these cars that we refer to as 64 1/2s are just really, really early 65 model cars according to the V.I.N. However, they have characteristics and features that Ford dropped at the end of the 64 model year. There were no alternator charging systems on 64 model Fords, and there were no generator charging systems on 65 model Fords, with the exception of the early production Mustangs, which they began building in early March of 64, instead of in July of 64, like the other 65 model cars. This is a pretty obvious difference between a 64 1/2 and a 65. This first picture is the generator of a 64 1/2 Mustang. It has this size-huge cast iron upper bracket, instead of the stamped steel bracket of an alternator car. This one is kind of hard to miss. Many of these cars, like mine, for example, have been changed over to alternators, though, so the absence of this generator and bracket does not mean that the car didn't originally come with it. I still have all of the generator stuff, in case I want to go back to trailered concours perfect, but, since it's my primary means of transportation, I have it on an alternator.

On the V8 cars, the 64 1/2s have what's called a five-bolt block, while the 65s have a six-bolt block. This is referring to the number of bolts that hold the bell housing onto the back side of the engine block. Here is a picture of a five-bolt bell housing. The arrows show where the bolts that attach it to the block are, and yes, you can see this with the motor and transmission still in the car, so, all that you have to do is open the hood, and then count them. There will also be some other bolts there, like the two that hold the starter on, the inspection plate at the bottom of the bell housing, but, the bolts that hold the bell housing to the block are pointing in the opposite direction of the others, so, it would be very difficult to get them mixed up.
On a 64 1/2, the brake light switch is on the front of the master cylinder, like the one in the picture, instead of hanging on the brake pedal inside the car, like a 65. You will also notice that the engine gauge wire harness has a couple of extra wires coming out of the firewall for the brake lights, so, the 64 1/2s also have a different engine gauge harness to accomodate the brake light switch.

This is a picture of the front passenger side of the radiator core support in front of the battery. You will notice those three slots in it that look like gills. The alternator cars don't have that. They just have those four slots over to the passenger side of the gills.

The flap indicated by the arrows hangs down a lot further on the 64 1/2s than it does on a 65. On the 65s, it only comes down about half that far. From the factory, this part is painted black, as is the upper area of the piece that this flap is a part of from the front edge of the cowl lip forward. This one is painted body color just so it stands out better. Again, if I ever go back to trailered concours perfect, I'll also fix that.

Many of the 64 1/2s had a cast iron crankshaft and water pump pulley set-up. Here they are, sitting beside the generator bracket. The one in the middle is the water pump pulley and the one on the left is the crankshaft pulley.

The generator cars had these great big horns mounted down on the strut rod brackets, instead of the smaller horns on the radiator core support that an alternator car had. There was also a horn relay mounted above the voltage regulator on the generator cars, instead of a wire coming straight out of the turn signal switch and going directly to the driver's side horn, then over to the passenger side horn, like the alternator cars.

This is kind of a small thing, but, it was a 'better idea' from Ford. You will notice in the picture that negative battery cable is attached to the inner fender area with a clip and a sheet metal screw. The generator cars had this, the alternator cars didn't. Even if the clip isn't there, there should be a hole in the car for the screw.

More to come later. (Insert smiley face here.)