Reply to "What's Your Experience/Advice for Ignition Timing with High Swirl Heads?"

George PAdmin.

Hey Mike, thanks. Looking forward to reading about the results.

The heads look like they've been massaged. I'd be curious to learn how much CFM was gained via the valve job (assume 3 angle style). I'd also be curious to learn what the ID of the intake pocket throat is. It sets the upper rpm limit, i.e. sonic choke. Stock 2V is 1.65" (42 mm), good for 6647 rpm.

When you plot the 4V flow & Edelbrock flow on the same graph, the Edelbrock flow curve is steeper ... very cool.

-G

5/11/2211:54 PM

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