LT1 Engine Build - Small-Block 2.0
Once given a "proper" porting treatment, Golen figures that the factory LT1 head is good for applications that make up to 530 hp. GES starts the process by replacing the stock 1.94/ 1.50 valve pair with a slightly larger 2.00/1.56 combo. Golen assures us that it's enough to make a difference.
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