Excellent info dave. Thanks for posting this. I'll be running a Performer on my 400 due to low hood clearnace...doesn't look like it gives up that much to an RPM (with your combo). That's good to know!
DynoDave Walter P. Chrysler Club - Great Lakes Region Member # 12304 1970 Plymouth Duster 1972 Dodge Charger Rallye https://wichargerguy.proboards.com/ 1977 Chrysler Cordoba