302 boss intake manifold
#41
Cobra Member
Now just curious because I'm newish here, when you say "proven" I assume you mean that the same driver on the same track on the same night back to back ran a boss than a gt and the difference was 2-3 tenths right??? Because if it wasn't that exact scenario I call bs. WAAAAAY too many variables to say that. I speak from several runs straight up.
Last edited by typesredline; 4/30/13 at 10:04 PM.
#42
Cobra Member
Also redlining a stock motor at the stock redline is perfectly fine. It is designed to handle a bit higher than that. The shape of the retainers on the valve springs are the main factor here. They control PtoV clearance based on height. The stock Coyote should be able to handle around 72-7300 safely. So the 6900 redline is perfectly safe. But once you start hitting 7500+ regardless if you make power there, you start causing wear on the bottom end, valve springs, the oil pump will start to cavitate the oil, etc.
To each their own. I just don't see the value.
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