Edelbrock Head Variations

[fourzeronine]

Anyone recall about when Edelbrock changed the engraving on the ends of their heads from “Performer 409” to “Performer RPM 409”?

Did the early heads have machining issues, or was that just limited to the sheetmetal pushrod guides?

 

[425/409ER]

Everything I have bought from Edlebroke has had machining issues lately.

 

[Iowa 409 Guy]

I believe all operations have been moved to Olive Branch, Ms but should have nothing to do with quality you would think. If I recall correctly it took a couple years to get up and running.

I'm sure Bob doesn’t mind their problems.

 

[scott hall]

I think the early ones had rocker studs and guide plate issues.

 

[Skip FIx]

I think mine were kind of early no issues with machining , pushrod guideplates or anythingl About 25 dyno pulls

 

[Barry Taylor]

I had some of the early ones and had no issues! There still running on the Nova!!

 

[409 bob]

Hi, Fourzeronine, Thanks for the thread. The Edelbrock head #60815 has 150 lb valve springs #5821(for roller cams) and the #60819 has 128lb springs #5792(for solid cams). Everything else seems to be identical. It looks like they call one "RPM", and the other is just "performer". Both heads only handle .600 lift. Hope this helps.
Bob