That's debatable. Pushrod V8's haven't really advanced that far down the food chain, the companies that make them stock have. GM used to have a lock-down on how many horses a stock car could make. The ZR1's horsepower rating isn't really that spectacular out of the engine it's in, I've seen the same kind of power out of a 350sbc with a super with decently built internals. Saying pushrods are "outdated" is similar to calling solid rear axles outdated. Perhaps they are, but the important part is that they are A.) Cheap and B.) Work. This fulfills all the qualifications neccessary to make a car work.Originally Posted by EJ25RUN