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Valve spacing on Edelbrock heads, please check my numbers

August 10 2017 at 11:52 AM

Bill Troth  (Login billtroth)

I’m trying to save some time and effort by assembling my Dove / COMP Cams rocker arm assemblies (used on Edelbrock 427 heads) on the bench with correct spacing of the rocker arm rollers rather than trial fit and adjust them in the car. I have searched the Forum and web and could not find any spec. for the valve spacing so I measured the spacing with a caliper on my car. Here’s what I measured for c-to-c distance on valve stems. Distance between the intake and exhaust in any one cylinder = 2”. Between the front cylinder intake and second cylinder exhaust = 2.58”. Between the second cylinder intake and the third cylinder intake 2.85”. Between the third cylinder exhaust and the fourth cylinder intake is 2.58 (same as first and second cylinders).
Here’s sketch

If someone can confirm or advise different on this I'd appreciate it
Bill Troth
64 Galaxie NSS
[linked image]

 Respond to this message   

  • Re: Valve spacing on Edelbrock heads, please check my numbers - Tom P on Aug 10, 2017, 1:05 PM
    • I rounded to the 2" on individual cylinders - Bill Troth on Aug 10, 2017, 3:16 PM