"Stage" heads are modified from stock andAugust 12 2017 at 8:06 PM
DaleP (Login Posi-67)
Response to Stage X Edelbrock heads
the specs and terminology will vary depending who did them. There are Stage X, Stage I or II or in my case I have Stage XR7. All from different cyl head guys. Barry will give you the correct answer or maybe just go to his website where the info is likely posted.