IN 1970, Matra merged with Simca.
For the 1970 season, Tyrrell was asked by Matra to use Simca's V12 in place of the Cosworth.
Simca was a subsidiary of the American company Chrysler which was competition for Ford.
Stewart tested the Matra V12.
He did not think it was as good as the DFV.
Ford gave Tyrrell a large part of the money they needed to race.
The team also got money for the French petroleum company Elf.
Elf had an agreement with Renault that did not allow them to provide money to anyone who was partnered with Simca.
Because of this, Ken Tyrrell had to buy a March 701 chassis as temporary solution while making his own car in secret.

Tyrrell was still sponsored by French fuel company Elf, and Tyrrell would keep the traditional French blue racing colours for most of the rest of the time the company existed.
Tyrrell and Stewart ran the March-Fords throughout 1970 with mixed success.
During this time, Derek Gardner worked on the first Tyrrell built Grand Prix car at the woodshed in Ockham, Surrey.

The Tyrrell 001, which looked like the MS80, was first seen in 1970.
It earned Stewart a pole position in the Canadian GP.
The car had problems in all of its 3 race starts.
The nearly identical Tyrrell 003 won both Drivers' and Constructors' Championships in 1971.
Stewart's had health problems dealing with a stomach ulcer in 1972 and did not race.
He was well in 1973 and raced again.
He finishing 1st in the Championship.
On October 6, 1973, Tyrrell's other driver was killed in practice for the US Grand Prix at Watkins Glen.
Stewart, who was to stop racing at the end of the season, and Tyrrell decided they did not want to keep racing.
Without their best driver, Tyrrell were never serious World Championship contenders again.

The team did still win some races during the 1970s with Jody Scheckter and Patrick Depailler.
Most notable of these was Scheckter's win at the 1976 Swedish Grand Prix.
They finished first and second in that race using an unusual Derek Gardner designed Tyrrell P34 car.
The P34 was the first (and only) successful six-wheeled F1 car.
They replaced front wheels with smaller wheels mounted in banks of two on either side of the car.
The design was no longer used after Goodyear refused to make the small tires needed for the car.
IN 1970, Matra merged with Simca. For the 1970 season, Tyrrell was asked by Matra to use Simca's V12 in place of the Cosworth. Simca was a subsidiary of the American company Chrysler which was competition for Ford. Stewart tested the Matra V12. He did not think it was as good as the DFV. Ford gave Tyrrell a large part of the money they needed to race. The team also got money for the French petroleum company Elf. Elf had an agreement with Renault that did not allow them to provide money to anyone who was partnered with Simca. Because of this, Ken Tyrrell had to buy a March 701 chassis as temporary solution while making his own car in secret.
Tyrrell was still sponsored by French fuel company Elf, and Tyrrell would keep the traditional French blue racing colours for most of the rest of the time the company existed. Tyrrell and Stewart ran the March-Fords throughout 1970 with mixed success. During this time, Derek Gardner worked on the first Tyrrell built Grand Prix car at the woodshed in Ockham, Surrey.
The Tyrrell 001, which looked like the MS80, was first seen in 1970. It earned Stewart a pole position in the Canadian GP. The car had problems in all of its 3 race starts. The nearly identical Tyrrell 003 won both Drivers' and Constructors' Championships in 1971. Stewart's had health problems dealing with a stomach ulcer in 1972 and did not race. He was well in 1973 and raced again. He finishing 1st in the Championship. On October 6, 1973, Tyrrell's other driver was killed in practice for the US Grand Prix at Watkins Glen. Stewart, who was to stop racing at the end of the season, and Tyrrell decided they did not want to keep racing. Without their best driver, Tyrrell were never serious World Championship contenders again.
The team did still win some races during the 1970s with Jody Scheckter and Patrick Depailler. Most notable of these was Scheckter's win at the 1976 Swedish Grand Prix. They finished first and second in that race using an unusual Derek Gardner designed Tyrrell P34 car. The P34 was the first (and only) successful six-wheeled F1 car. They replaced front wheels with smaller wheels mounted in banks of two on either side of the car. The design was no longer used after Goodyear refused to make the small tires needed for the car.
Tyrrell Racing