Difference between E-Street and RPM Heads ?

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Difference between E-Street and RPM Heads ? #2527458 07/26/18 04:28 PM 07/26/18 04:28 PM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar OP master
451Mopar OP master Joined: May 2008 Posts: 5,399 Aurora, Colorado	What is the difference between the Edelbrock E-Street and RPM heads? This is for a Big Block, and looking at the 75cc versions of each. It looks like they both use the #5792 Valve springs. Do they use different quality valves? Not sure why the RPM is $556 more expensive per pair?

Re: Difference between E-Street and RPM Heads ? [Re: 451Mopar] #2527462 07/26/18 04:36 PM 07/26/18 04:36 PM
Joined: Jan 2003 Posts: 14,493 So. Burlington, Vt. F fast68plymouth I Live Here
fast68plymouth I Live Here F Joined: Jan 2003 Posts: 14,493 So. Burlington, Vt.	Powdered metal vs ductile iron seats, and slightly different valves. That’s it. The minuscule amount of blending done on an rpm doesn’t do anything. 68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads

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