Greg, I have my first 440 sixpack engine I built for my Super Stock Challenger.
It was a mild and safe combination that I didn't have to check and change valve springs on every other run.
446 with 906 heads that flowed 306 cfm with 2.08-1.74 valves, and old Weiand high rise sixpack intake modified as in the mopar bible.
Isky of the shelf "super gas" roller and 1.6 Harland Sharp rockers.

625hp and 510 tq

10.21@130 and 1.40 60 ft in a Challenger weighing 3540 lbs

That engine is on my shop floor and ready to run :-)

I cant sell my first born SS engine :-)


I just love the easy going attitude in our bracket community here in Sweden, and my and my friend always drive our cars to the tracks.
This weekend was a 187 miles drive , just put the slicks in the trunk and go :-)