Thanks Tlowe & DeuceCoupe,
DeuceCoupe, between the Holley 390 & 450, the 390 worked a hair better?
How about driveability? Both about the same?
I ran on my 250 6 cyl an old Carter 400 CFM AFB, 1965 273 V-8 era & it ran really good w/that. I did do a little tweaking to it though.
Thanks
MBHD