This post made me think a little. The last hydraulic cam I ran was in 1977 and it was a 509 purple shaft with a four speed. I never ran a dual plane intake.
Well, it certainly has enough duration to operate in single plane territory. I’ve ran that cam in a 10-1 -365 cid with the LD-340 & a big TQ, Torker II 340 w/a AFB, & the AG-RPM and a AFB.
The dual planes were a big improvement over the single plane in the street. Faster overall. Once I moved away from the 2.02/1.60 J heads to a set of RPM heads, the improvement was even better.