I've raced engines that make peak power at 12,000 rpm and ones that make peak at 2,800 rpm.
Torque is a pointless number in and of itself. 2100 ftlb of torque is normal for a trash truck with a 300hp engine.
I applied 275ftlb to my crank bolt, why can't I use that power?
Torque won't propel a 1lb car 1 mph by itself. Don't believe it? Weld the axle bearings and git er dun. Or remove the driveshaft, whichever applies.
Not only is a torque number useless, a peak HP number is useless as well, unless you have a CVT (no transmission ratios).
What YOU want is the max area under the HP curve in the rpm ranges you can use. High average HP in the racing zone.
In the case of our trucks, we go faster by reducing the torque. And oddly enough, the same thing goes for high RPM engines. The gearbox in a F1 car would disintegrate if put in a trash truck. High torque numbers mean everything must withstand huge torsional loads. From the engine mounts to the tires, and everything in between, if you make small torque, you can make a light powertrain.
Your snowmobile engine with the correct gearing is a better race engine than a normal V8. Why? It can make more HP per lb of drivetrain weight. The V8 must waste a lot of it's power carrying the extra weight of a drivetrain that must hold far more than 65ftlb.
As far as dynos go, and factory HP ratings, here's where things get screwy. A Dynojet without a retard option will give different numbers than a dyno with a retard mechanism. Why? Load and rpm gain will screew up the Dynojet numbers. I love dynojets for their simplicity and repeatability, but the numbers don't jive with HP/weight vs 1/4mi trap speeds. It reads too high for a cammed NA V8, but too low for a turbo diesel. With factory HP readings, it's a Forest Gump thing, "you never know WHAT you'll get", ask Mazda and Ford, both had to buy back a lot cars for not meeting the brochure claims. GM tends to be very modest, but most mfr's are really mfr's when it comes to brochure numbers.
In any case, I heard people are putting bike/rec engines into antique cars and LSR racing them. I suppose there is some kind of point to that, but it eludes me. If torque was important, they would leave the car engine in it.