@cvjoint I'm far from being an expert or anything, but aren't those things more:
1. A problem with not having enough cooling on a supercharged engine (well known problem with that car)
and for the Viper,
2. Generating too much G for a car with a wet sump.
Rather than it being something that would only happen to an OHV engine?
🤔
1. Yes and no.
Before I bought it, I asked around the paddock C6 ZR1 owners whether they have heat issues. I was told to rest assured, it's not a problem. C6 ZR1 cooling is nearly identical to C7 Z06, and power output is nearly identical. What I realized after the purchase is that most drive parade laps, or don't talk about the shortcomings of their car, but mostly parade laps. You can drive these 20 seconds a lap of pace side by side with Miatas and they cool just fine. You can also drive warm up lap, a good pace hot lap, cool down lap and they do alright as well.
I recommended that GM implement a cooling design similar to the turbo M3 of that time, basically a three radiator setup covering the whole front of the car. Lo and behold they did it eventually, but just for the C7 ZR1. They also copied my power steering cooling solution. The C7 ZR1 still runs really high temps btw, not acceptable for proper racing but ok for enthusiasts.
So tell me what the solution is for a forced induction OHV making 3,500hp. Best you can manage with OHV is a naturally aspirated NASCAR block, with revs reduced to maintain reliability, and a front bumper full of coolers to manage 700hp. Oh wait, they just did that for LeMans 24hrs. 1,400hp or more OHV engine doing long races is a fantasy imo. Is engine architecture related to heat stability? I think yes and no. Yes, because how you draw heat through the engine is architecture, you can melt valves and keep bearings cool, or vice versa. The oil and water cooling and pressure systems are in a way part of the achitecture, see for e.g. integrated dry sump in C8 Corvette or just about any modern Porsche 6 cylinder. And no because you can try to band aid your way with 10 radiators, but are you not driving a bus on the track at some point?
2. Exactly my point. see the pages I wrote on this thread about the Windsor being wet sumped.