Is there really a difference..??

nodemon said
1971 318 .040 over
LD4B vs PERFORMER RPM..
What's your preference, and why..?
Is there really that much of a difference..?
I have one of each.. I'm going to run one and sell the other.

i doubt you'll notice a gnats *** difference betwixt the two.

if running the RPM, i'd probably gasket match the heads if i was feelin' frisky.

LD doesn't have a provision to mount the coil or any AC, the RPM has a coil provision but same deal with AC (if any of that matters to ya)