Delux,
I found your answer (if you haven't already) Look in the past thread in Engines entitled "292 horsepower ratings?" by Jake4 on 03-08-2005.

Don't know how long you have been member but I have been here for about a year and these guys seems to know everything about these plants.

Remebmer - It's good to be different, anyone can write the big check for the SBC.

Enjoy!