Performer RPM Air Gap

[flagcraig]

Made the choice to go with Edelbrock RPM Air Gap dual plane (7576) and a Holley Street Avenger 670 cfm.

I have a rallye 1972 Challenger rebuilt 340 with the factory sport hood.  Will it fit?  Can I use factory air cleaner or do I need to go with a new one?

Thanks for all the help.

[moparman82]

Mine fits under a t/a hood with a 3in tall k&n, but just by the skin of it's teeth, so I would think u would maybe need a aftermarket air filter with a drop base

[soundcontrol]

I got a Edelbrock dual plane and a Holley Street Avanger on my 340, 70 Challenger, R/T hood. Have an Jegs aircleaner right now, and I have a lot of room.
I believe an factory air cleaner will fit also. Not sure about the model number on the intake but it looks the same if I check the picture of the 7576.

[7212Mopar]

This is what I did last year. I choose the Edelbrock AVS 650

http://www.cuda-challenger.com/cc/index.php?topic=89646.30

[calicuda70]

i have the same set up, have drop base aircleaner and and 3/8 carb spacer fits just barely also have solid motormount to help it from hitting the hood set up works great and the car pulls hard.

james

[cudabob496]

dimensions:

http://www.campbellenterprises.com/318-340-360-intake-manifolds/edelbrock-small-block-mopar-intake-manifolds.php

[flagcraig]

Made the choice to go with Edelbrock RPM Air Gap dual plane (7576) and a Holley Street Avenger 670 cfm.

I have a rallye 1972 Challenger rebuilt 340 with the factory sport hood.  Will it fit?  Can I use factory air cleaner or do I need to go with a new one?

Thanks for all the help.

Sounds like it could be a close call.  What if I dropped down to the 7176 Edelbrock intake which is the Performer RPM dual plane.  It looks like it gives me almost an extra inch to play with.  Will there be a dramatic change in performance?  Thanks.

[7212Mopar]

http://www.hotrod.com/techarticles/hrdp_1111_differences_in_power_or_not_edelbrocks_rpm_vs_air_gap/

Air gap tuned 1000 RPM higher per Edelbrock.

I don't think you should have problem with a drop base air cleaner.

[cudabob496]

Sounds like it could be a close call.  What if I dropped down to the 7176 Edelbrock intake which is the Performer RPM dual plane.  It looks like it gives me almost an extra inch to play with.  Will there be a dramatic change in performance?  Thanks.

Dramatic change? Most swaps to a good intake will net you 15 to 20 hp or ft-lb torque. With your new carb, you
may even see more.  Good chance you'll feel in in the seat of your pants! But keep in mind, when you upgrade one
component, to see the max benefit, you need to possibly upgrade others, such as to a K&N air filter, or larger exhaust, etc.
On a 300 hp engine, a cold air induction system is worth about 20 hp.

PS I may have answered your question wrong. If you go from the air gap, to the Edelbrock performer dual plane, might lose about 10 peak hp/torque or so, in my opinion. The edelbrock performer dual plane I once had on my Cuda caused power to drop off quickly above 5500 rpm.

[HemiOrange70]

I have a 70 Challenger with 340 with airgap and Eddy carb with a 3" air cleaner and it fits fine

[cudabob496]

If you know the present adverized height of your intake, then put some playdough balls on the air cleaner, close hood,
then open hood and measure how much room you have from how much the playdough ball stayed un-squished.  Then look
at the advertized height of the intake you want to use, to caluculate if it will fit.  But you can make more room by modifying the base of your air cleaner.
Do all the modifications now, to lower height of air cleaner, and take measurements, before you buy the intake.

I also modified slightly the brackets that were under my hood, to make more room for a taller air filter.