[Woodz428]

Not to get a debate started here, but when I read the comments on low Riser engine I thought it different than my recollection. So, I dug out an old Hot Rod that had a test of a '65 500XL Galaxie with a 427 and it lists and has photos of what they refer to as the "new" 427. With such refinements as a side-oiler block (shown in the pic), forged crank (w/pics) and machined combustion chamber Medium riser heads...also pictured. It had been my understanding from the late 60's that the Medium riser was first produced in the '65 model year which this old article seems to confirm. Now the Cobras may have gotten left over CO engines so the production line got the newer stuff. I also think the casting #'s for SO engines was a C5. They did ,however, refer to the dual quads as Carters though..... oddly enough ..those they didn't have a pic off w/ the filter removed.