Remco; I have never heard of hooking a blower up to a propane (LPG) fuel system, I have heard of ones on Diesel engines and of course gasoline but not propane. Are the blower pistons rated for gasoline or propane, if for gasoline then your compression ratio will be too low for propane. In fact a set of standard 9.5:1 rated pistons would be more then low enough for a supercharged propane engine, a normally aspirated propane engine can easily run at 12:1 compression with no pinging. If I were you I would cancel the order for the set of headers asap. If not specifically noted to do so they will not fit around the torsion bars in your Imperial without drastic modification. Most headers for early hemis were designed for installation in hot rods not as replacements for O.E.M manifolds, certainly not Imperials. I can't speak for or against the propane injection system that you mention only that you should get your rebuild under wraps first before you start on additional mods. I know of many people that have gone this route and have ended up with a car sitting in pieces for years because they get in over their head too fast and don't have the money or time to complete it. Best Regards Arran Foster 1954 Imperial Newport Needing A Left Side Tailight Bezel and other trim parts. ----- Original Message ----- From: "Remco van Lent" <remco.nancy@xxxxxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Sunday, October 02, 2005 12:56 PM Subject: IML: Blown 392 Megasquirt EFI Hi list . I have ordered all the parts for my soon to be strong 392. ( 57 crown) a Nice 6-71 supercharger , a good set of blowerpistons , a not to radical cam and a set of headers. plus of course all the normal parts needed for a complete rebuild. Now I am also thinking of using liqued propane injection with a megasquirt EFI controler . anyone here that has experiance with the megasquirt systems , On the website it all looks almost to good to be real. Remco R van Lent The Netherlands ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm