Designed by Aurelio Lampredi the Fiat Twin Cam was an advanced straight-4 automobile engine produced from 1959 through 1994 as a Fiat/Lancia engine and from 1994 onwards with a redesigned cylinder-head as an Alfa Romeo engine (replacing the original Alfa Romeo Twin-Cam in all front-wheel drive Alfa Romeos). Excluding the Alfasud (and derived) cars which used an original flat-four Alfa Romeo "boxer" engine As the name implies, it was a DOHC design, which was quite unusual in the late 1950s. A few non-DOHC variants were also produced. The engine was produced in a large number of displacements, ranging from 1297 cc to 1995 cc and was used in Fiat, Lancia and Alfa Romeo automobiles.
Applications:
- 1966-1985 Fiat 124 Spider/Coupe
- 1967-1972 Fiat 125
- 1972-1984 Fiat 132/Magenta
- 1972-1984 Lancia Beta Saloon/Coupe/Spider/HPE
- 1974-1984 Fiat 131/Mirafiori
- 1975-1984 Lancia Monte Carlo
- 1978-1988 Fiat Ritmo/Strada
- 1980-1994 Lancia Delta/HF/Integrale
- 1981-1984 Lancia Trevi
- 1984-1990 Fiat Regata
- 1985-1990 Fiat Weekend
- 1985-1992 Lancia Thema
- Morris Minor (A popular engine swap among hot rodders during the 1990's, until the Rover K Series took over later.)
| Displacement (cc) | Bore (mm) | Stroke (mm) |
|---|---|---|
| 1297 | 76 | 72 |
| 1301 | ||
| 1367 | ||
| 1438 | 80 | 72 |
| 1491 | 78 | 78 |
| 1491 | 78 | 78 |
| 1585 | 84 | 71.5 |
| 1592 | 80 | 79.2 |
| 1598 | ||
| 1608 | 80 | 80 |
| 1756 | 84 | 79.2 |
| 1995 | 84 | 90 |
Footnotes
