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| Jump to the Start of Each Category by Clicking on a Link Below | ||
| MUSTS | FOG LIGHTS | INTERIOR |
| ENGINE | SUSPENSION AND BRAKES | EXHAUST |
| STRIPES, BADGES and OTHER DETAILS | DELETED | |
| M U S T S | ||
Build Date |
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Required A or K code engine with dual exhaust |
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| F O G L I G H T S | ||
| Fog Lights Factory GT's had a pair of 4-inch fog lamps. Note they are wired so that when you turn the fog lights on, the rear tail lamps also illuminate. |
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Fog Light Circuit This factory diagram for the GT fog circuit shows the breaker bolted to the wiper bracket. |
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| Fog Light Switch Early Placement |
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| Fog Light Switch D Shaped Punched Hole Later Placement |
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| Fog Light Wiring When the switch is flipped on, both the fog lights and the rear tail lights light up. Non-factory GTs with the fog lights added typically are not wired for the tail lights to illuminate when the fog lights are turned on. |
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| Fog Light Breaker The fog light breaker has 2 threaded ends for wires to attach to. It's maybe 1.5"x.25"x.25" and has a bracket made on it to attach the breaker to a mounting point. It was normally attached to the wiper motor mount or the pedal support. |
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| Fog Light Wire Hole in Radiator Support Punched with a Lip (not Drilled) |
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| INTERIOR | ||
| 5 Bezel Dash Cluster (Fuel, Temperature, Speedometer, Oil pressure, Amperes) |
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| Pressed Lip for the 5 Bezel Dash Cluster Pressed Lip in the Dash (not cut) |
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| Gauge Wiring A Mustang could get a '66 under dash wiring harness installed with the 5 gauge instrument cluster but the '66s are different in that the ammeter have two wires attached to the gauge similar to how the other gauges are wired. The '65 ammeter has an inductive loop like the one this Mustang has. |
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| Glove Box Door The glove box door on both 1965 and 1966 GTs is flat and carries the mustache at this upper edges. GT's with Pony Interior get the Wood Grain Finish |
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| ENGINE | ||
| Carburetor |
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| Intake Manifold Iron Standard Cart 4V |
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| SUSPENSION and BRAKES | ||
| Steering Gear Box (tag is
the only way to tell) HCC-AX is the special manual steering box standard on the GT Mustangs and cars with heavy duty suspension. Special Box ratio is 16:1 add the stock Pitman and idler arms and the ratio becomes 22:1 add the Shelby American Pitman and idler arms and the ratio becomes 19:1 |
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| Heavy Duty Front Springs approx. 8.25 coils |
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| Heavy Duty Rear Leaf Springs | ||
| Shocks | ||
| Sway Bar 13/16" |
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| Disc Brakes Fade-Resisting Front Disc Brakes |
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| Disc Brake Pedal Pad | ||
| Disc Brake Proportioning Valve Inspect how the proportioning valve is attached. |
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Rear
Brake Hose and Bracket |
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| Disc Brake Master Cylinder The Master is round with a clip on the lid. It is at least twice the size of a drum brake master cylinder. |
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| EXHAUST | ||
Trumpet Exhaust |
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Exhaust Brackets |
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Exhaust Brackets |
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Brace |
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| STRIPES BADGES and OTHER DETAILS | ||
| Hood Molding Bright-metal hood accent molding in 1965. All 1966 Mustangs came with this Molding |
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Badges |
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Badges |
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Stripes |
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1965 GTs came with a standard gas cap while all 1966 GTs came with a gas cap with the letters GT on them. |
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| DELETED | ||
| Rocker Panels A GT car will not have any, making room for the stripes |
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| Bumper Guards Rear bumper guards were deleted from the vehicle due to trumpeted exhaust |
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| Emblems Mustang emblem and running horse are deleted from front fenders |
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| Quarter Panel Ornaments Deleted on coupes and convertibles. Fastbacks were not offered with quarter panel ornaments. |
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