I recently found this forum and wondered if anyone had a BOSS 429 in a Cobra. Did you get yours built? I have a 1969 BOSS 429 that I warmed up a little. Although it is only a .05 overbore,with a stock crank it dynoed at 600 hp with a rollar cam, dual 715 Holleys,MSD ignition, and custom headers.I am considering building a Cobra using a C& C performance all aluminum BOSS 429.I would love to hear about your Cobra. Email me at
dteter@ptdprolog.net thanks