See other engines in this family
Ford T / F specs: 170 ci (2.8L) 6-cylinder, 3.50 x 2.94 in (88.9 x 74.7 mm) bore and stroke. Rated 101-105 hp, 1961–1967.
The Ford T / F is oversquare — the 3.5" bore exceeds the 2.94" stroke by 19.0% — a layout that favors airflow and RPM over leverage at the crank. The 2.94" stroke does not reach 4,000 ft/min of mean piston speed until about 8,150 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. A rod ratio of 1.604 is in the range most production engines fall in. Each of the 6 cylinders displaces 28.3 ci (464 cc).
It is one of 5 engines in the Ford 170ci family, all of them 170 ci — the differences between them are in compression, heads and rating, not displacement. 7 factory variants share these dimensions, rated from 101 to 105 hp across 1961–1967.
| Displacement | 170 ci / 2.8 L |
|---|---|
| Bore | 3.5" |
| Stroke | 2.94" |
| Cylinders | 6 |
| Configuration | I6 |
| Compression ratio | 8.7–9.1:1 (published figures vary) |
| Rod length | 4.715" |
| Rod ratio | 1.604 |
| Bore/stroke ratio | 1.19 |
| Block material | cast iron |
|---|---|
| Head material | cast iron |
| Valvetrain | OHV |
| Fuel type | gas |
| Firing order | 1-5-3-6-2-4 |
| Advertised HP | 101–105 hp |
| Years | 1961–1967 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1962 | gross | 101 * | — | 8.7:1 * |
| 1963 | gross | 101 @ 4400 | 156 lb-ft @ 2400 | 8.7:1 |
| 1964 | EET gross | 101 @ 4400 | 156 lb-ft @ 2400 | 8.7:1 |
| 1966 | gross | 105 @ 4400 | 158 lb-ft @ 2400 | 9.1:1 |
Factory specification sheet. * Not yet cross-verified.
| Bore/stroke character | 1.190 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 2,940 ft/min — conservative for a street engine |
| Rod ratio | 1.604 — moderate — the range most production V8s fall in |
| Displacement per cylinder | 28.3 ci |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 1961 | — | T / F |
| 1962 | 101 hp | T / F |
| 1963 | 101 hp | T / F |
| 1964 | 101 hp | T / F |
| 1965 | 105 hp | T / F |
| 1966 | 105 hp | T / F |
| 1967 | — | T / F |
3 factory vehicles, 1961–1967. Each year opens that model's engine table.