The story
The Mach 1 was new for 1969 and came only as a fastback. It sold 72,458 in its first year.12
Its success helped end the GT: the GT option was last offered in 1969, when 5,396 were sold.34
For 1971 the standard content was cut back. The base engine became the 302 two-barrel, and the NASA-style hood scoops were a no-cost option on it.35
The name outlived the first generation and carried on into the Mustang's second generation.2one source
Where the sources disagree
Every conflict behind the figures on this page. All rulings.
Open
The 1971 Q-code 351 Cobra Jet
Our ruling: Unresolved: 280 or 285 hp. CJ Pony Parts' entry describes the earlier 428, so it does not settle the 1971 engine.
What each source says (3)
- Q = 351 4-barrel Cobra Jet, 280 hp9one source
- Q = 351 Cleveland CJ, 285 hp, late in the 1971 model year only, replacing the M-code13one source
- Q = 428 Cobra Jet for 1969–197114one source
Open
1972 net ratings for the 250 six and the 302
Our ruling: Unresolved: 95, 98 or 99 hp for the six, and 140 or 141 hp for the 302. Over-Drive's two figures are the ones Maine Mustang gives for 1973.
What each source says (3)
- L = 250 six, 98 hp; F = 302 2-barrel, 140 hp1015one source
- L = 250 six, 95 hp net; F = 302 2-barrel, 140 hp13one source
- 250 six: «Horsepower: 99 @ 3600 RPM SAE Net»; 302: «Horsepower: 141 @ 4000 RPM SAE Net»12one source
Open
1973 net ratings for the 250 six and the 302
Our ruling: Unresolved: one source each. We show both figures.
What each source says (2)
Settled
Over-Drive's 1973 ratings for the 351s
Our ruling: We use 177 and 266 hp, which Maine Mustang and Wikipedia's Mach 1 table give independently. Over-Drive's 173 and 259 stand alone.
What each source says (3)
- 351 2-barrel 177 hp (H); 351 4-barrel Cobra Jet 266 hp (Q)11one source
- Engine table: H-code 177 hp; Q-code 266 hp, for 19733one source
- Engine tabs: «173 HP 351 CID V-8» and «259 HP 351 CID CJ V-8»16one source
Settled
1971 Mach 1 production
Our ruling: We use 36,499, which Maine Mustang and CJ Pony Parts give alike. Over-Drive's 36,449 stands alone.
What each source says (3)
Settled
1973 Mach 1 and Grandé production
Our ruling: We use 35,440 Mach 1s and 25,274 Grandés, which Maine Mustang, CJ Pony Parts and MustangSpecs give alike. Over-Drive's figures stand alone.
What each source says (2)
- Mach 1: 35,440; Grandé: 25,27421117
- Mach 1 «quite popular with 35,490 sold»; Grandé 27,27416one source
Settled
The Mach 1 body code on the door tag
Our ruling: 63C on the 1969–70 cars and 63R from 1971. MustangSpecs' «all first generation» holds only for 1969–70; CJ Pony Parts' tables and Wikipedia both give 63R for 1971.
What each source says (3)
- Production tables: Mach 1 «63C» for 1969 and 1970, «63R» for 1971, 1972 and 1973, body code 052one source
- 1971: «"05" VIN code & "63R" body code on the door tag»3one source
- «All first generation Mach 1's are distinguished by the body style code 63C on the door data plate»18one source
Settled
Two errors in Maine Mustang's 1969 engine list
Our ruling: We use a 2-barrel for the H-code and 375 hp for the Boss 429. Wikipedia's 1969–70 table does not cite CJ Pony Parts, so the two agree independently. Maine Mustang's own 1970 list has 375 hp too.
What each source says (3)
- H = 351 «4v», 250 hp; Z = Boss 429, 376 hp7one source
- Engine table: 351 Windsor 2-barrel 250 hp; Boss 429 375 hp13one source
- H 351 2-barrel 250 hp; Z Boss 429 375 hp14one source
Settled
An error in Maine Mustang's 1970 engine list
Our ruling: We use a 2-barrel for the H-code, as Wikipedia's table and CJ Pony Parts do independently.
What each source says (3)
