[Bhobbs]

Originally Posted by MrChrisLS3

Yes, and what we don't know is if those tri-y's are the standard, or an available option, perhaps part of an optional exhaust package. We also don't know the true performance value of those manifolds. Also, given the difference in design and application, how can we be so sure that these would flow any better or worse than the manifolds on the Vette?

Of course there are unknowns, but the point is that this is the LT1, and given recent history from GM, they are most likely not going to alter the engine itself for this application, it is what it is.

For one, it would be a pretty major failure if the tubular tri ys don't flow more than the cast manifolds.