Unless it's for a very short sprint race (like the old Formula 5000 races), you can't really run a flatplane crank in a V8 larger than 4.5 liters. Since the TS040 obviously has a flatplane crank, I'm betting on a sub 4.5 liter V8. Again, like with the 3.4 V8 in the TS030, Toyota are betting on the hybrid system to be their trump card.
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