Quote:

The 6-pak manifold is a lot better than most think. I've got a very nice pump gas 712 horse 535. A couple of years ago I did a manifold test on the dyno and I posted the results on here. I found the 6-pak is a great manifold as long as it's kept under 6500RPM. You can keep your crossram and tunnel ran manifolds.



I would like to hear more about your 712HP pump gas combo.
What compression ratio,heads,carbs,cam,header size,iron block or aluminum,etc,etc...