Its a 429 CJ based engine. Those heads have tremendous potential, especially when coupled with big cubes. From what is known the engine is bigger than 600". Yes, its a Tony Bischoff engine with supposedly a very high $$ budget. How much its been teched, I dont know? I do know Dave's Hemi was torn completely downm for all to see.
Its all a moot point, though. From what I have been told, the Barton built FAST Hemi will blow everyone out of the water. Should be on the track very soon.
MB
It IS a SUPER Cobra Jet based block that measures UNDER 600", 'nuff said. If you want find out the EXACT cubes, talk to Lane. You'll get an answer NOT guesstimation!