Just curious: the last 2 engines that i’ve personally seen on the dyno were 1.31 and 1.21 hp/ci. These are both pump gas street motors that race a few times a year.
Eng 1: sb chevy 400 10.5:1 afr210 heads with single plane intake hp950 carb. Bullett hyd roller .612” and 240’s dur@.050”
495 lb ft. And 524 hp @6300
Eng 2: bb chry 505 10.6:1. Stealth std port hesds with indy dual plane Hp 950 carb. Comp solid roller 573” and 248-254 dur @.050”
630 lb ft @4500 and 609 hp @5900.
Being that peak tq of eng 1 was above 5250 rpm, is that why hp was greater than tq? And does this mean that the cyl head breathing was better comparing to the other engine, being the reason why hp wss greater than tq? What else can we surmise?
my thought s on your question .
The SBC probably has effectively bigger head , bigger cam and better intake . This makes HP and higher RPM peak
The BBM has effectively smaller head , cam , carb and intake . Better TQ less HP and lower RPM peak .
The AFR head is probably a superior head also unless the Stealth is a CNC head or really well prepped .
Tex
