LD 340 vs Performer RPM?

crackedback said

Buy a used LD/rpm/air gap before buying the copy would be my suggestion.

If you have an LD, buying the other two isn't really worth the time or investment.

Click to expand...

this is the 1st best answer Ive read so far.
there are others Im sure...

basically, the 2 intakes will show within 7-8 hp of each other with the same combo.

the visual diff is that the LD340 has seeming ly more runner volume, the RPM has straighter more uniform runners.

The LD340 also has more area under the carb flange....but the rpm has a lil deeper plenum to compensate....lil this & a lil that...

I have both and should tape off the windows on each and cc the whole shabang to see how much/ 'if any' volume difference there is.