Overview & History
The Fiat 80-66 tractor was built in 1985, the same year that the 70-66 was introduced, and then discontinued in 1991. Part of the 66 series, it was marketed for daily use on small and medium farms. It was distributed by Hesston in the US and was also sold under the Ford and New Holland names until 2003.
It was sold for US$26,500 in 1990 and was available in several variants: utility 2WD (80-66); utility 4WD (80-66DT); orchard 2WD (80-66OR); orchard 4WD (80-66ORDT); high-crop (80-66HC); and, high-crop 4WD (80-66HCDT).
The 80-66 was equipped with a 3.9-litre, four-cylinder Fiat diesel engine, which had 72.7-litre fuel capacity, 80-hp engine power at 2500 rated RPM, liquid cooling, and ether pre-heating. The engine also had 17:1 compression, gave the tractor a 12-volt electric starter, and its bore/stroke measured at 104 by 115 millimetres.
This tractor can run 70 hp at PTO and its rear can do 540 RPM per ground or an optional 540 per 1000 RPM. Its drawbar power claimed to reach 62 hp. Its other features included power steering and differential mechanical wet disc brakes. It came available with four-post ROPS, though a canopy was offered as an option.
The Fiat 80-66 had one of three transmission systems: The first was a 12-speed partially synchronised system, which had 12 forward and four reverse gears. Four gears (1-4) were in each of the three ranges (I-III) and shifting between gears was synchronised.
The second system was a 12-speed mechanical shuttle, which had 12 forward and reverse gears. Just like the first transmission, there were four gears (1-4) in each of the three ranges (I-III), but unlike the first one, this system had a shuttle feature.
The third was a 20-speed creeper, which had 20 forward and 8 reverse gears. There were also four gears (1-4) in each of the three ranges (I-III) but unlike the first two systems, this transmission had normal and creeper ranges.
The 80-66 was equipped with an open-centre hydraulics system, which had one to three valves and can handle pressure amounting to 2700 psi and give a total flow of 41.6 litres per minute. Its tractor hitch had position and lower-link draft control and was capable of lifting objects weighing 2,355 kilogrammes.
This tractor had a front-end loader attachment. The 2WD variants were 353 centimetres long and had front tyres sized 7.50-16, wheelbase measuring 230 centimetres, front axle clearance of 54 centimetres, and front tread ranging from 139 to 189 centimetres.
Meanwhile, the 4WD variants were 363 centimetres long, weighed 2,964 kilogrammes, and had 12.4-24 sized front tyres, 224-centimetre wheelbase, 40-centimetre front axle clearance, and 153- to 195-centimetre front tread. Both variants were 254 centimetres high (including the ROPS) and had rear tyres sized 18.4-30 and rear tread ranging from 139 to 200 centimetres.
Fiat Replacement Parts
G.W. Tractors specialises in sourcing replacement parts for all Fiat models. Call us on 1800 062 790 to find tractor parts for your Fiat 80-66. We may also have Fiat 80-66 tractors in our yards for wrecking, and if we do they will appear below. Check out all the tractors we are wrecking.
Who should buy a Fiat 80-66
Small and medium farms can have the Fiat 80-66 as their only tractor for everyday tasks.
Buy a used Fiat 80-66
G.W. Tractors is the best place to buy a used Fiat 80-66 in Australia. If we don’t have any in stock at the moment, give us a call on 1800 062 790 and we have a better chance than anyone else of finding you one. Below are the used Fiat tractors we have in our yards now. Check out all of our used tractors for sale.
Fiat 80-66 Specs
| Series | 66 series | Last one sold for | US$26,600 (1990) |
| Years made | 1985 to 1991 | Type | Utility tractor |
| Series back | Hesston 70-66 | Variants | (80-66) Utility 2WD (80-66DT) Utility 4WD (80-66OR) Orchard 2WD (80-66ORDT) Orchard 4WD (80-66HC) High-crop (80-66HCDT) High-crop 4WD |
| Engine overview | 3.9L 4-cyl diesel | Engine capacity | 3.9 L [238.5 ci] |
| Cylinders | 4-cylinder | Cooling | Liquid-cooled |
| Fuel | Diesel | Bore/stroke | 104 x 115 mm [4.094 x 4.527 in] |
| Compression | 17:1 | Rated RPM | 2500 |
| Started volts | 12 | Fuel capacity | 72.7 L [19.2 gal] |
| 3-point hitch – Rear type | II | Rear lift | 2,355 kg [5,194 lbs] |
| Engine power | 80 hp [59.7 kW] | Drawbar power (claimed) | 62 hp [46.2 kW] |
| PTO (claimed) | 70 hp [52.2 kW] | Transmission types | Partially synchronised Mechanical shuttle Creeper |
| Gears | 12 forwrad and 4 reverse 12 forward and reverse 20 forward and 8 reverse | Rear PTO | Independent |
| Rear RPM | 540/ground 540/1000 (optional) | Standard tyres – Front | 2WD: 7.50-16 4WD: 12.4-24 |
| Standard tyres – Rear | 18.4-30 | Front tread | 2WD: 139 to 189 cm [55.1 to 74.75 in] 4WD: 153 to 195 cm [60.25 to 77 in] |
| Rear tread | 139 to 200 cm [55.1 to 78.75 in] | Weight (Operating) | 4WD: 2,964 kg [6,535 lbs] |
| Length | 2WD: 353 cm [139 in] 4WD: 363 cm [143 in] | Wheelbase | 2WD: 230 cm [90.7 in] 4WD: 224 cm [88.5 in] |
| Height – Overall | 254 cm [100 in] | Height – Hood | 149 cm [59 inches] |
| Height – Steering wheel | 170 cm [67 inches] | Ground clearance | 2WD: 54 cm [21.5 in] 4WD: 40 cm [16 in] |
| Chassis | 4×2 2WD 4×4 MFWD 4WD (80-66DT) | Steering | Hydrostatic power |
| Brakes | Differential mechanical wet disc | Cab | ROPS. Canopy optional |
| Hydraulics type | Open centre | Pressure | 2700 psi [186.2 bar] |
| Total flow | 41.6 lpm [11 gpm] | Electrical – Charging system | Alternator |
| Charging amps | 33 | Battery volts | 12 |
Accessories, consumables and more
G.W. Tractors also has a huge range of accessories and consumables for all makes and models of tractors. We have everything you need to keep your tractor working.
