Originally Posted by Glengemen

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On an otherwise stock engine a bigger TB will cause you to loose power. Thet is one of the mods that comes after the engine requires more air, such as stroking, forced induction of any kind, of even a good port and polish job. I would worry more about the intake manifold and exhaust system. Both of them suck stock. On a 5.0 you get respectable gains for about the same cost instead of loosing power.</P>