I have just had the feeling in the past several pages of this thread that the suggestion is about to be made that the P-40 should have received the V-1650-3, not the P-51....
Not from me. Would have been 'neat' to have some V-1650-3 powered P-40s, but the P-40 never would have had the range or the speed of the Mustang. The P-51 was the plane they needed for the rest of the war in the ETO for sure. And the bottom line is nothing like that happened so speculation is mildly interesting at best.
I'm less interested in "coulda woulda shoulda" kind of stuff and more interested in what actually happened. History is what scratches my itch so to speak. What is nice about this forum is that the tidbits of Aviation History does emerge in these discussions aside from the rest of what goes on. Like
that memo on the Allison engined P-51s, that thing is
gold. I probably never would have found it. I look at WW2performance but I hadn't been interested in the Mustangs that much and if that whole argument about Allison Mustangs hadn't started up you wouldn't have posted it it. Really helps open up the whole 'overboosting' thing, 70" Hg for 20 minutes without damaging the engine... that is some heavy duty hot rodding! I also now know why early P-51s didn't do so well in combat and why they weren't a more famous / important fighter prior to the B model.
As far as the P-40 goes, I'd really like to know what the Commonwealth victory claim numbers were. That may that beleagured US fighter shine a bit brighter in the estimation of all those folks who still call it 'obsolete from the start of the war', 'rugged but unmaneuverable' and so forth. If they had 2200 victory claims in USAAF service, how many were there under Commonwealth, plus Russian? Russian numbers might be out of reach for another year or two (unless somebody in here from Russia has some they can translate for us) but I suspect Commonwelath numbers are out there somewhere.
If the Gold Standard is 5950 for the P-51, I'd be very interesting to see just how close the P-40 actually got if you added up all the victory claims from everyone who used it. I think it would be close.
The P-40 was a flawed design, the engine / performance ceiling issue crippled it, but it seemed to knock down a lot of enemy planes in spite of that problem.
S