Just scored a Super Six and matching trans

My point with all that diatribe, is that the /6 is kind of unique among gasoline engines because of its incredibly rigid construction and heavy-duty crank/bearing construction. I don't think even the tip of the iceberg has been uncovered as regards just how much boost this ol'engine can withstand before incurring damage.

I have some friends who all race the V6 Turbocharged Buick Grand National engines, and it seems that whenever they attempt to increase boost levels beyond 25 psi, they start coming apart,in one way or another. There are some high-priced aftermarket blocks and heads for these engines (caled "STAGE MOTORS") that will allow more boost with some degree of reliability, but from what I have seen, the /6 has it all over this G.M. engine for robust construction and reliability when it comes to handling high boost (over 30 pounds).

I have seen some pictures online of /6 bottom ends that have main bearing cap girdles that would seem to strengthen the crank support; maybe somebody will post here to let us know if somebody has already built a 40 psi-boost /6.

This is all pure speculation on my part based on what I have read, but it makes me wonder just HOW MUCH boost you could throw at a well-built /6 with a main bearing girdle and an O-Ringed block, forged pistons and rods, before it came apart, and what would fail first.

Generally speaking, horsepower and torque climb commensurately as boost goes up. That is, if you can control detonation... so, alcohol might be a possible fuel...

Because of its incredibly strong constitution, the possibilities would seem to be virtually endless with the right kind of setup for forced induction on a /6.