Aluminum Intakes - What are You Running?

These are bang dead on ball crackin accurate.

I had a LD-340 and a RPM-AG. I haven’t out the screws to ether of them really hard but I’ll tell you that the RPM is just a hair better & not worth the coin to change to.

The best thing to do to a LD 340 for maximum performance is well known with the divider milled and the ports opened up, IF you want to run that route on that intake. I also ran a TQ on mine since it was purchased modified like that. It was a beast of a dual plane. One day I’d like to find another one in good condition already modified. A couple of fellas here have run low 11’s with a RPM. The LD-340 is right behind it.

Currently, I’m running a RPM & a modified Edelbrock 750.

Garrett Ellison said

The LD340 is so close to the air gap, that Edelbrock used to only recommend switching from an LD340 to a Performer RPM or Air-Gap in the case of fitment issues. I've read somewhere that the LD340 was used in the development of the RPM and Air Gap intakes and the only real difference between them is the RPM has less flow spread from port to port than the LD, but the LD has a marginally higher overall average flow. If you have a serious build and want it to act like a single plane, get the divider milled out by the MP directions and add a one inch open spacer.

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MOPAROFFICIAL said

I use an ld340 with my 340 and I also using ld340 with my 410...7200rpm no problem.
Stick with that intake manifold and if you think you need a little bit more mid-range or up top use a 3/8 spacer. It works!

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