Quote:
Originally Posted by Tony, NY
Many years ago I bought a set of Edelbrock heads from I think Speedway. When they arrived they were both the same side. Returned them but couldn't get a set because they were out of stock. Reason is they only make a run once a year. Things may be different now.
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Obviously you're talking about 49-53 heads, BUT here is a fun fact (that actually makes sense if you know the details of the flathead design). The original 39-48 Edelbrock heads had cast chambers and the chamber design was slightly different left to right . . . this was due to the valve angle being different on the Driver's vs the Passenger's side. The chamber areas above the valves took this into account.
Now days, they just do CNC work above the valves and I don't believe there are any differences side-to-side. (Though I have not actually measured them in detail - though I will in a few weeks!).