I’ve got two pair here, getting ready to go on engines. One engine is a 465 inch bracket engine and one is a 390 “street” build.
At first glance, they look well, flow well (up to a certain point) and have smallish intake port volumes. As we have discussed here a few times in the past, the rocker stand pads are raised, so it tends to skew the rocker geometry right off the bat, but it’s nothing that cant be fixed. Combustion chamber volumes have came in at a little under 70cc for me. They are cast by Edelbrock.
I’m picking up the crankshaft for the 390 either today or tomorrow and should have it on the dyno in a few weeks.