They are W2's... Home Ported, with a set of Gold Crane rockers.
He races all the Chrysler series over here on the east Coast... He hardly misses a race....
He dyno'd the engine when it was first assemble. It did make 630hp, and the dyno has been known to be accurate.

[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]