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300 hp which covers naturally-aspirated
880" exhaust
Both high and low temperature zinc additives
You also should hear what the owner of Cutaway Racing has to say about their performance as he has used plenty of them
*Some pictures may show parts that differ slightly from the current recipe
408ci LS Long Block for NA Valves 300 hp which covers naturally-aspiratedIs your project ready for its new LS? Our standard build 408 puts out 720 hp naturally aspirated. No supercharger or crazy cam needed. We get these results from our precision CNC machining, parts selection and tune. If you watch the videos in our YouTube Machining Playlist, you'll better understand how we put up such big numbers on this engine. The short block starts with a seasoned GM 6. 0L block that we have digitally remastered to better than new
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