I think I'm almost ready for the dyno session coming in a couple of weeks.
The plan is to break-in the engine N/A, then switch over to the forced induction pulls. To accomplish this, I took a Speedmaster single plane intake and cut off the water crossover. This means that I can mount the blower drive plate with no belt before the dyno session, and just have 8 (manifold) bolts to remove to switch from N/A to forced induction. Should take about 15 minutes once the N/A pulls are complete. The electric water pump stays the same, and the ignition will be using the ECU and the 8 coils that I have wired up for the forced induction pulls can also be used (timing only) for the N/A pulls.
We'll likely use the Westec Holley 950 XP dyno carb for the N/A pulls. I'm not expecting much HP N/A, this is a low compression, cast iron smog head with not even a port match. It does have a roller cam (OF 2), but it does represent what a typical guy might have in a early '70's low compression street car that has maybe a mild cam and a set of headers.
Here are a couple of shots of the machining process of the first billet units:
The riser blanks were 38 lbs each from Alcoa:
They end up around 6 lbs each:
Billet water crossovers:
