Thanks for the link with the print. Interestingly, unless I am looking at the print incorrectly, there is a radius cut on the secondary portion of the rear carb where the print shows a straight wall. Every one of these manifolds I have seen as of late has this radius.

I understand the potential effect on torque, but being a manual, stroker with headers should make up for any increase in plenum volume. If we end up with one of these plus the standard manifold I would entertain doing an A-B test on the dyno to see total impact.

We have two sets of carbs so that shouldn’t take too long to test.

Thanks for all the contributors to the post.