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98 Posts
Discussion Starter · #1 ·
I broke a valve spring in my Supra, and i was thinking about having the entire head ported, polished, and totally redone while I'm getting the valve spring fixed. How much power do you think that I could get from doing this? I don't have any future plans for modifications and my car is completely stock, I was just wanting to get a little more horsepower from it. BTW, it's a 94 N/A auto.

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