I was able to run my 333 yblock on the R&R dyno in suburban St Paul Mn yesterday. It was a good day no gremlins and no broken parts.. The y block endured repeated 7000 rpm pulls without complaint



I had estimated that Hilborn injection would add some torque and horsepower, and I was rewarded with an additional 27 hp (462)and 31 lb/ft of torque (421). The injector proved to be easy to tune and I was able to achieve a nice stable idle at 1200 rpm, which is not that much different than the carb and intake. This will prove to be a potent setup in a drag car. Currently at 1.38 hp/cu in , addition of Mummert heads should bump up the horsepower to nearly 500, that would be 1.5 hp/cu which is in big boy territory.



Ooops faux pas in the original attachment.... see below for data