What to do...

Was the cam degreed when installed? How did you arrive at the 7000 rpm shift point? My 408 had a 260/264 .050" .690"ish lift flat solid cam, well ported Edelbrocks with a port matched Victor, 10.8-1, 3260# with 4.10 gears. It liked being shifted at 6400, anything over 6600 or under 6400 it lost et.


IMO, You've been offered good advice on the converter and Victor intake. Your 60' is off close to .15 and I'm not sure a converter will get it all. A Victor may help with the soft bottom end.