1937 GP cars top speed

[mindprobe]

Could you guys tell me the top speed of the following cars used in the 1937 season?

ERA C
ERA B
Maserati 6CM
ALfa Monza 2.3L
Mercedes W125 normal version
Mercedes W125 streamliner
Mercedes W25K-DAB streamliner used in Avus
Auto Union C normal version
Auto Union C streamliner
Maserati 8CM
Maserati 6C-34
Alfa 12C-36 4.1L
Alfa 8C-35 3.8L
Mercedes SSK 7.1L
Bugatti T35B 2.3L
Miller-Offy used in the vanderbilt cup
Alfa 12C-37 4.5L
Delahaye 135

And another thing, in the mercedes and auto union the diferences between the streamliners and the normal cars was just bodywork or also engine power?

Thanks!

[Vitesse]

Maserati 6CM - 135mph
Maserati 8CM: 8CM-3000? - 150mph
Maserati 6C-34 - 160mph
Mercedes (all versions) - 200mph

[mindprobe]

And also the speeds from this ones:

Maserati 4CM
MG K3 Magnette

[Vitesse]

Maserati 4CM - 135mph

[mindprobe]

Thanks Vitesse!

Does anyone else knows the rest?

[Vitesse]

A few more:

Mercedes W125 - 320km/h
Auto Union C - 300km/h
Alfa Romeo 12C/36 - 290km/h
Alfa Romeo 8C/35 - 275km/h
Alfa Romeo 12C/37 - 310km/h
Alfa Romeo 8C-2600 Monza - 225km/h (1933)
Mercedes SSKL (1931) - 230km/h

Through the 'Wall of Death' or North Turn the Mercedes 'Streamliners' reached the possible top speed of 180 km/h or 112 mph. They were shooting down, out of the steep North Turn onto the following Avus straight going south where they reached a top speed of 385 km/h or 240 mph. At that speed overtaking was a delicate matter if not almost impossible. The German ONS did not want to take the responsibility of holding future events here with speeds having risen to what they were then in 1937. Therefore this was the last high-speed event held on the Avus.

[Milan Fistonic]

An article from The Autocar dated December 19, 1947 quotes the MG K3 Magnette as having a top speed of about 114 mph. That's 6,300 rpm with a 4.89 to 1 axle ratio. Another car with a 4.33 to 1 axle ratio could do 120 mph at 6,100 rpm.