| Your question isn't really that vague, although it can be interpreted as such. :) 500 horsepower, horsepower being a unit of work (force over time over distance), could potentially be catastrophic to the integrity of our block. 500 horsepower, produced at 5250RPM, is the metric of power associated with an applied force (torque) of 500 foot-pounds. For this specific hypothetical you ask, and within the known empirical characteristics our engines display, 500 horsepower, at the least, is less than half of the power (the block) it can handle. However, I can envision a particular hypothetical situation where this may not be the case. Since horsepower is a measure of work rather than force, and your question is fundamentally based on the structural integrity of the block itself, there is no real answer to be concluded based on the premise you are using. The reason is simple: You can produce 500 horsepower in an engine turning 5250RPM with 500 foot-pounds of force at that RPM. But you can also produce 500 horsepower at 2625RPM with 1000 foot-pounds of torque. 1HP = 1foot-pound torque @ 5250RPM.
-or-
HP = (TORQUE * RPM) / 5250 So, if it were possible to produce 1000 foot-lbs of torque in your Z at 2625RPM, you would be making 500 horsepower. Whether or not the VG's block could support this amount of force is a really good question. Consider this: At 1000 foot-pounds of torque, the piston/connecting rod has to produce a force on the crank of: 83mm stroke = 3.27 inches
3.27 stroke places the journal center at 1.64 inches from the axis of rotation.
1.64 inches is 0.137 of a foot.
To create 1000 foot-pounds of force will require a force of 7317 pounds of force at the rod journal, (1000 * 7.317) which is almost 3 times the weight of the vehicle itself. Since the crank is held in place by the block, the block must be able to support this amount of force at the main journals (experts: excuse the simplification here - just trying to illustrate the magnitude of forces involved as simply as possible). Your question is obvious and for all intents and purposes the answer is "YES". I'm just pointing out the fact that you asked the question in a manner analogous to trying to determine whether a tomato tastes good based on how a watermelon tastes: the process of determination requires a common unit of measure with which to compare - your question lacks the required information needed to answer it. Without doubt, I could assemble a Z32 powerplant with intent of producing 1000ft/lbs of torque at 2625RPM, which would be 500 horsepower. With absolute uncertainty, but with a strong sense, I would say such a day will end in a janitorial exercise of collecting a lot of small bits of metal and mopping up about a gallon of oil. You might even be so privileged to have a sweet glycol coctail to drown your woes....
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20:42:47 12/08/07
