I reckon 719hp, we have a bigger motor +78ci but only @10:1cr, -13 heads that prob do not flow as much as your 270's at our 625" and 260/270@.050 s/roller with a 440-2, an old 950HP and 2.18" TTI's and we made 694hp on the dyno which is just 1.18hp/ci.

Last edited by rb446; 02/04/21 07:45 PM.
1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987