When I dynoed mine many years ago it made 55 hp over a stock cross ram. This was with box stock -1 Indys at 498ci. Also peak HP was at 5750rpm with the cross ram. It peaked at 6800 with the Indy. The Indy gained power from 4500 rpm up. I love the look of the cross ram and didn't run the Indy very long. Even in early testing shifting at the low cross ram rpm shift point it was worth .30 @ 3mph. The late Ron Eroh had one modified by Ray Barton. It ran in the 9.85-9.95 range way back. The bottom line is your trying to guzzle a beer thru a drink straw. My quest now is to make the Indy run as well as a single dominator
Doug