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All Ford Thunderbird engines, apart from the 2.3L Turbo, have timing chains and are interference. The 2.3L has a timing belt and is interference.
Scroll down to see detailed timing belt data for your particular model year of the Ford Thunderbird.
| Year | Engine | Belt Or Chain | Interference or Non-Interference |
|---|---|---|---|
| 1980 - 2005 | 3.8L, 3.9L, 4.2L, 4.6L, 5.0L | Timing Chain | Interference |
| 1983 - 1988 | 2.3L | Timing Belt | Interference |
Note: Replacement intervals are broad recommendations and can be affected by age, weather conditions, running conditions etc. Check with the owner's manual/ manufacturer/ dealership.
Check out the Belt Or Chain specifications for other makes and models.
The 2005 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.9L V6 | Timing Chain | Interference | Lifetime |
The 2004 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.9L V6 | Timing Chain | Interference | Lifetime |
The 2003 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.9L V6 | Timing Chain | Interference | Lifetime |
The 2002 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.9L V6 | Timing Chain | Interference | Lifetime |
The 1997 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 4.6L V8 | Timing Chain | Interference | Lifetime |
The 1996 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 4.6L V8 | Timing Chain | Interference | Lifetime |
The 1995 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 3.8L V6 Supercharged | Timing Chain | Interference | Lifetime |
| 4.6L V8 | Timing Chain | Interference | Lifetime |
The 1994 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 3.8L V6 Supercharged | Timing Chain | Interference | Lifetime |
| 4.6L V8 | Timing Chain | Interference | Lifetime |
The 1993 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 3.8L V6 Supercharged | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |
The 1992 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 3.8L V6 Supercharged | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |
The 1991 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 3.8L V6 Supercharged | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |
The 1990 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 3.8L V6 Supercharged | Timing Chain | Interference | Lifetime |
The 1989 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 3.8L V6 Supercharged | Timing Chain | Interference | Lifetime |
The 1988 Ford Thunderbird with the 3.8L and 5.0L engines have timing chains while the 2.3L engine has a timing belt. All are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 2.3L 4 Cyl. Turbo | Timing Belt | Non-Interference | 60k |
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |
The 1987 Ford Thunderbird with the 3.8L and 5.0L engines have timing chains while the 2.3L engine has a timing belt. All are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 2.3L 4 Cyl. Turbo | Timing Belt | Non-Interference | 60k |
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |
The 1986 Ford Thunderbird with the 3.8L and 5.0L engines have timing chains while the 2.3L engine has a timing belt. All are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 2.3L 4 Cyl. Turbo | Timing Belt | Non-Interference | 60k |
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |
The 1985 Ford Thunderbird with the 3.8L and 5.0L engines have timing chains while the 2.3L engine has a timing belt. All are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 2.3L 4 Cyl. Turbo | Timing Belt | Non-Interference | 60k |
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |
The 1984 Ford Thunderbird with the 3.8L and 5.0L engines have timing chains while the 2.3L engine has a timing belt. All are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 2.3L 4 Cyl. Turbo | Timing Belt | Non-Interference | 60k |
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |
The 1983 Ford Thunderbird with the 3.8L and 5.0L engines have timing chains while the 2.3L engine has a timing belt. All are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 2.3L 4 Cyl. Turbo | Timing Belt | Non-Interference | 60k |
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |
The 1982 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.3L I6 | Timing Chain | Interference | Lifetime |
| 3.8L V6 | Timing Chain | Interference | Lifetime |
| 4.2L V 8 | Timing Chain | Interference | Lifetime |
The 1981 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.3L I6 | Timing Chain | Interference | Lifetime |
| 4.2L V 8 | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |
The 1980 Ford Thunderbird engines have timing chains and are interference.
| Engine | Belt Or Chain | Interference or Non-Interference | Service Interval |
|---|---|---|---|
| 3.3L I6 | Timing Chain | Interference | Lifetime |
| 4.2L V 8 | Timing Chain | Interference | Lifetime |
| 5.0L V8 | Timing Chain | Interference | Lifetime |

The primary purpose of the timing belt or timing chain is to maintain the timing (syncronization) between the crankshaft and the camshaft(s).
A timing belt is made of a rubber compound while a timing chain is made of chain similiar to a bicycle chain.
A timing belt wears out over time and must be replaced at the manufacturer's specified interval. Timing belt failure can result in serious engine damage.
Although a timing chain will wear over time it is usually good for the lifetime of the engine but it should be routinely inspected.
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