Merlin engined P40 (2 Viewers)

I'm surprised at the number people who don't know the P40D (I think), F and L were in fact Merlin powered. Albeit the same Merlin that powered the Spitfire V IIRC.

As far as I know, it boosted the Warhawks performance to a respectable 364 mph at 20,000 feet thanks to it's 1 stage, 2 speed supercharger versus the single speed, single stage supercharger of the Allison powered E that topped out at around 340 at 15,000 feet.

Any thoughts and info? Please feel free to correct any errors I may have made.

Edit:
Well that didn't take long.
The P40 F had a Merlin 20 series engine while the Spit mk.V had a Merlin 45 series. Big thanks to W wuzak for pointing that out.
And a P40D airframe was fitted with a Merlin as an experiment, not starting with the D model. My mistake.

Not the same Merlin as the Spitfire V.

The P-40 F and L (not D) used the 20 series Merlin with 2 speed single stage.

The Spitfire V had the single speed, single stage 40 series Merlin.

The D was the first fitted with the Allison F series engine and can best be described as an E with only 4 guns instead of 6

wuzak said:

Not the same Merlin as the Spitfire V.

The P-40 F and L (not D) used the 20 series Merlin with 2 speed single stage.

The Spitfire V had the single speed, single stage 40 series Merlin.

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Will correct.
Forgot that A D airframe was fitted with a Merlin as an experiment.

MiTasol said:

The D was the first fitted with the Allison F series engine.

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I should've been a little clearer with that. The RAF or whoever fitted a P40D with a Merlin as an experiment.