Quote:

Both have the same intake port and chamber, the only difference is the lower exhaust port on the EZ's so you can run a stock header...Thats where the SR will make more power, with its improved , and raised exhaust port...


This is what I was refering to, from a story by Steve Dulcich:

"The 440-EZ series is based upon the popular Indy SR series of heads, but with casting revisions to the intake, and a relocated exhaust port, putting the exhaust back to the stock location from the raised SR position."