dutra manifolds vs header

vitamindart said
thanks for the heads up, need to get them in hand to decide how to make the connections. may make it a 2 step process and get it running without the turbo first. just not sure i want to do that exhaust twice.

With the studs on the ends, the slant cylinder head was designed for a one piece exhaust manifold. The Hooker Headers that I run on the slant in the 68 Barracuda are a two piece design like running dual Dutra’s. When installing the Hookers, It took time to center both exhausts and the intake on the ports with the engine in the car.
What I did was, one time when I had the motor out and on a stand, I aligned the exhaust and intake manifolds on the head port openings perfectly, tightened them down then drilled a pilot hole through each exhaust flange into the manifold face, being careful to not drill into the water jacket. Removed the manifolds and put a roll pin in each pilot hole drilled into the head manifold face. I enlarged the through holes in the flanges slightly so they are an easy slip fit. Now when assembling the manifolds to the engine in the car, it is easy to get the exhausts in the optimum position. Next time I have the engine out of the D150 I will do something similar with the Dutra’s.