Here's a link to a fellow who has built a Hemi out of a 354 Poly block. I think the important thing is to keep the heads and block in the same family, Chrysler heads on Chrysler blocks, Dodge on Dodge and Desoto with Desoto. Sorry I don't have a better link, but this fellow built one to use in his Barracuda. http://hometown.aol.com/erlihemi/HemiBoak.html This was also covered in several of the Mopar magazines, I just don't have the issues handy for reference at the moment. But,as rare and pricy as the Firepower 392s have become, this may be a 2nd alternative for those folks restoring Hemi Imperials until they can find the correct pieces. Phil<>< ----- Original Message ----- From: <RandalPark@xxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Wednesday, December 03, 2003 10:07 PM Subject: Re: FW: IML: 56 Imperial is there another engine other than a Hemi head ?? > >From what I have been told, the Hemi heads will NOT work on the Poly block. For one thing, I think that the pushrods are at way different angles in each engine. I have had three Hemi engines apart, but I haven't ever seen the "lesser" engine disassembled. The pistons are not "domed" in the 331 or 354 Hemi engines. > > Paul >