Here is a summary of the major external differences that make up the combinations and permutations:
1) 24", no IR sensor
2) 24" with IR sensor
3) 32" with IR sensor
1) Hooded on top
2) Hooded modified to eliminate the hood (see second Sageburner)
3) Not hooded
1) No holes in aft ramp (XF4H only?)
2) No boundary layer discharge chutes
3) Boundary layer discharge chutes at top and bottom of ramp
4) Boundary layer discharge chute at bottom only
1) Flush NACA-type inlet on lower forward fuselage
2) Scoop inlet on lower forward fuselage
1) First five aircraft: No inboard leading edge flap; there were two RATs, one in the inboard leading edge of each wing
2) The rest of the F-4As and F-4Bs had an inboard leading edge flap and a RAT incorporated in the left mid fuselage.
There was a fairing behind the tailhook on the first several aircraft. It was removed early in development on the first F4H and not incorporated in production.
The original stabilator had a symmetrical leading edge. Probably as part of the redesign of the wing to provide increased lift for aircraft 6 and subsequent, a cambered leading edge was added. Interim stabilators have a zig-zag pattern at about 20% chord where they were modified. Production stabilators incorporated the cambered leading edge in the basic structure.
F4H-1 First Flight
F4H-1 First Flight Top View
F4H-1 In Development
F4H-1 No 4, 4 December 1959
Tailhook and Tailhook Fairing
I've modified this drawing since I first posted it yesterday to improve the shape of the tailhook and the fuselage aft of the hook as well as make some changes to the leading edge of the fin. Note that while the basic shape is based on MacAir drawings, they don't agree to within a line width and the details were added by reference to photographs. Slavish adherence to this drawing by a modeler would be inappropriate.
This is the best picture I can find of the original tailhook fairing, here in the May 1958 on the first F4H
However, although it was removed on the first F4H by December 1958 as shown here, it was still present on #6 during its first at-sea carrier trials.
This is the early tailhook. Note the flat bottom just aft of the afterburner nozzles.
This is the production tailhook, in this case on an F-4K.
F4H Carrier Qualification
F4H Carrier Trials Rudder
The bottom of the rudder was cut out, apparently to insure no interference with the stabilator when the rudder was fully deflected and the stabilator was full trailing edge up. This was not carried forward to production.