Model 63 D – Standard equipment on base Mustang Fastback (Sportsroof)  included color­ keyed nylon carpeting1 floor-shift, high-back bucket seats, steel guardrail door construction, DirectAire ventilation system, concealed windshield wipers with cowl air inlets, mini console with ashtray: armrests, courtesy lights, cigar lighter, heater and defroster, all-vinyl interior, glove box, E78-14 belted black sidewall tires, and either the 250 CID six or 302 CID V-8.  The Sportsroof also featured fixed rear quarter windows except when ordered with power window lifts, and a tinted backlight.

Model 76 D –Standard equipment on base Mustang Convertible included color­ keyed nylon carpeting, floor-shift, high-back bucket seats, steel guardrail door construction, DirectAire ventilation system, concealed windshield wipers with cowl air inlets, mini console with ashtray: armrests, courtesy lights, cigar lighter, heater and defroster, all-vinyl interior, glove box, E78-14 belted black sidewall tires, power convertible top, and either the 250 CID six or 302 CID V-8.

In addition to Hardtop features listed: clear vinyl backlite, color-keyed boot, easy ­action top fastening latches, full-width rear seat, courtesy lights under instrument panel, glove compartment lock, and wheel covers.

Mustang Grande Hardtop Model 65 F – The Mustang Grande coupe had the same basic features, plus a vinyl top with “Grande” in script nameplates, unique body side tape stripes, unique wheel covers, a floor mat in trunk, Lambeth cloth and vinyl interior trim, bright pedal moldings, deluxe camera grain instrument panel with wood-toned appliques, panel mounted electric clock, and rear ashtrays.

Model 63 R – The Mach I Sportsroof featured the following extras: competition suspension, “NASA” type hood scoops (this was listed as a no-cost option on all Mach I models, but considered standard), front spoiler-type bumper, color-keyed hood and rear fender moldings, black grille with integral sports lamps, black panel applique, black or Argent Silver painted lower body, front and rear valance panels, rear tape stripes with “Mach I” decals, wheel trim rings and hubcaps, F70 x 14 bias-belted whitewall tires, and as a base engine, the  302 CID two-barrel carbureted V-8.

302 CID 2-Barrel V-8. (Code “C”) Overhead valves. Cast iron block. Five main bearings.
Displacement: 302 cubic inches.
Bore and stroke: 4.00 x 3.00 inches.
Compression ratio: 8.5:1.
Horsepower: 141 @ 4000 RPM SAE Net.
Torque: 2429 @ 2600 RPM SAE Net.
Valve lifters: Hydraulic.
Camshaft duration: Intake: 266°, Exhaust: 244°, Overlap 36°, Lift: (Intake) 0.368″, (Exhaust) 0.380″.
Carburetor:  (Manual Transmission) Ford Autolite 2-barrel Model D3ZF-9510-BB; (Auto Transmission) Ford Autolite 2-barrel 3FF-9510-AF.

NOTE 1: Base engine for Mach 1.
NOTE 2: Manual transmission not available in California

351 CID Cleveland 2-Barrel V-8.  Overhead valves. Cast iron block. Five main bearings.
Displacement: 351 cubic inches.
Bore and stroke: 4.00 x 3.50 inches.
Compression ratio: 9.0:1.
Horsepower: 173 @ 4400 RPM SAE Net.
Torque: 258 @ 2400 RPM SAE Net.
Valve lifters: Hydraulic.
Camshaft Duration: Intake: 258°, Exhaust: 266°, Overlap 47°, Lift: (Intake) 0.400″ (exhaust) 0.400″.
Carburetor: Ford Autolite 2-barrel Model (manual transmission) D3ZF-9510-CA; (Automatic transmission) D3ZF-9510-CA.

351 CID Cobra Jet V-8 – Now called “HO”.   Overhead valves. Cast iron block. Five main bearings.
Displacement: 351 cubic inches.
Bore and stroke: 4.00 3.50 inches.
Compression ratio: 7.9:1. Open chamber heads
Horsepower: 259 @ 5600 RPM SAE Net.
Torque: 292 @ 3400 RPM SAE Net.
Valve lifters: Hydraulic.
Camshaft duration: Intake: 270°, Exhaust: 290°, Overlap 46°, Lift: (Intake) 0.480″ (exhaust) 0.488″.
Intake Manifold: D1ZE-BB. (unique to CJ).
Carburetor:  Ford Autolite 4-barrel Model (Manual transmission) D3ZF-9510-DC.

NOTE 1: Some factory information lists the Q-Series V-8 at 253 HP SAE Net.

NOTE 2: Similar to the 1972 Cobra Jet however utilized lower flat topped pistons, resulting in a 7.9:1 CR.  The “351 CJ” included a better intake manifold, hydraulic valve lifters, different valve springs and dampers, a 750-CFM spread-bore 4300-D3 Motorcraft carburetor, dual-point distributor, and four-bolt main bearing caps.  The engine was rated at 246 HP in the Ford Torino and Mercury Montego. 

We have compiled the best engine information possible from multiple sources. We welcome DOCUMENTED factory information that can add to the  specifications.

1973 Q-code (351 Cobra-Jet)
The Q-code 351 “Cobra-Jet” (also called 351-CJ, 351-4V) was produced from May 1971 through the 1974 model year. It was a lower-compression design that included the open-chamber  heads.  The “351 CJ” high-performance engine included a different intake manifold, high-lift, long-duration camshaft with hydraulic valve lifters, different valve springs and dampers, a 750-CFM spread-bore 4300-D3 Motorcraft carburetor, dual-point distributor, and four-bolt main bearing caps.

For the 1973 model year, the engine was rated at 259 HP SAE Net when installed in the Mustang, and 246 HP in the Ford Torino and Mercury Montego.