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Testing GM L92 And LS7 Cylinder Heads Exhaust Ports

Testing GM L92 And LS7 Cylinder Heads Exhaust Ports

Testing The New GM L92 Cylinder Heads - 550 hp for Under $4,900
Comparing the exhaust side of these stock heads with the fully CNC-ported LS7 heads indicates that the stock L92 heads are slightly better at lower valve lifts, which is what you want with street-oriented cylinder heads. View Related Article
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