Ferrari 642

{{Short description|1991 Formula One racing car by Ferrari}}

{{Use dmy dates|date=April 2023}}

{{Infobox racing car

| Car_name = Ferrari 642

| Image = Prost monaco91.jpg

|Caption=Alain Prost driving the 642 at the 1991 Monaco Grand Prix

| Category = Formula One

| Constructor = Ferrari

| Designer = Steve Nichols (Technical Director)
Jean-Claude Migeot (Chief Designer)
Claudio Lombardi (Chief Engine Designer)

| Predecessor = 641

| Successor = 643

| Team = Scuderia Ferrari SpA

| Drivers = 27. {{flagicon|FRA}} Alain Prost
28. {{flagicon|FRA}} Jean Alesi

| Technical ref ={{Cite web|url=https://www.statsf1.com/en/ferrari-642.aspx|title=Ferrari 642|website=www.statsf1.com|access-date=26 November 2020}}

| Chassis = Carbon fibre composite monocoque

| Front suspension = Double wishbones, push-rod actuated torsion bar springs and telescopic shock absorbers, anti-roll bar

| Rear suspension = Double wishbones, push-rod actuated coil springs over telescopic shock absorbers, anti-roll bar

| Wheelbase = {{convert|2830|mm|in||abbr=on}}

| Track = Front: {{convert|1800|mm|in||abbr=on}}
Rear: {{convert|1675|mm|in||abbr=on}}

| Engine name = Ferrari Tipo 037,

| Capacity = {{convert|3499|cc|cuin|1|abbr=on}},

| Configuration = 65° V12,

| Turbo/NA = NA,

| Engine position = mid-engine, longitudinally-mounted

| Power = 710-725 hp @ 13,800-14,500 rpm{{Cite web|url=https://www.statsf1.com/en/moteur-ferrari.aspx|title=Engine Ferrari|website=www.statsf1.com|access-date=26 November 2020}}{{Cite web|url=https://www.ferrari.com/en-EN/formula1/f1-91|title=Ferrari F1-91 (1991) - Ferrari.com|website=www.ferrari.com|accessdate=1 April 2023}}

| Gearbox name = Ferrari

| Gears = 7-speed

| Type = semi-automatic

| Differential =

| Fuel = Agip

| Tyres = Goodyear

| Weight = {{convert|505|kg|lb||abbr=on}}

| Debut = 1991 United States Grand Prix

|Last_event=1991 Mexican Grand Prix

| Races = 6

| Wins = 0

| Podiums = 2

| Poles = 0

| Fastest_laps = 2

}}

The Ferrari 642 (also known as the Ferrari F1-91)

{{cite web |url=http://formula1.ferrari.com/cars/f1-91 |title=Ferrari F1-91 |access-date=2020-02-15 |archive-url=https://web.archive.org/web/20130927170633/http://formula1.ferrari.com/cars/f1-91 |archive-date=2013-09-27}} was a Formula One racing car designed by Steve Nichols and Jean-Claude Migeot and was used by Scuderia Ferrari in the 1991 Formula One season. It was a development of the team's 641 chassis, which had mounted a championship challenge in {{F1|1990}}.

Ferrari started the 1991 season with high hopes of winning the championship. Jean Alesi signed a contract with the Scuderia when Nigel Mansell returned to the Williams team. The 642's best result was a second place taken by Alain Prost at the 1991 United States Grand Prix, held at the Phoenix street circuit.

The 642 was replaced by the Ferrari 643 at the 1991 French Grand Prix.

{{Clear}}