Quote:
Originally Posted by joylee
GT40 Iron heads are much better compared to the gt40p, it may have the same functions, but the gt40 is more reliable...
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More reliable? More reliable when it comes to? The GT-40P heads result in not only better power production from higher intake and exhaust flow rates, but also better efficiency. If you're talking about a valve train failure, that can hardly be blamed on the head. Using proper components (like valve springs that can handle your camshaft's lift profile) is essential to any engine.
The GT-40 v GT-40P hasn't really been a very debatable topic for the past decade now.