IIRC, ther quad was "cheapened" to a single OHC with 2 valve heads to create what was at first called a "dual" four. I suspect that may be the pre ecotec engine. If so the 96-2001 would be a much better choice I suspect. The difference between the dual and quad engines was VERY noticeable. Stay away from early Quads! They are not worth the effort to build. Mark Price Morgantown, WV 26508 1969 AMC Rambler, 4.0L, EFI, T-5 2004 Grand Cherokee Laredo, 4.7L, Quadratrac II "I realize that death is inevitable. I just don't want to be around when it happens!" ----- Original Message ----- From: "Frank Swygert" <farna@xxxxxxx> To: amc-list@xxxxxxxxxxxx Sent: Friday, May 22, 2009 9:47:56 AM GMT -05:00 US/Canada Eastern Subject: Re: [AMC-list] Quad 4 in 58-60 Rambler You just scratched the surface, but come to a great point -- you need to research a bit so you know which one to get. In general, the later ones have all the quirks and bugs worked out. Rather than a Quad-4 you really want a 1996-2001 "Twin-Cam". Same engine, new name to mark all the improvements. Any of those should be good to go. The rodder community calls them all Quad-4, thus a bit of confusion. I'm pretty sure the one the guy on hotrodders.com is building is a 96-97 model, but I'll ask. The Ecotec appears to be based on the Q4 design, though of course thoroughly modernized. -------- Date: Thu, 21 May 2009 23:52:14 -0700 From: tom jennings <tomj@xxxxxxx> In the spare time I don't have, I spent a couple hours in the last week hunting info on the Quad 4 motor... OK it's only reading, but anecdotes from rebuilders, hot rodders, etc...people in a position to actually know, not blind fans nor haters... It's a mess of a motor. It sure is pretty though! And makes a lot of power, and ... but there's like 6 blocks, 4 cranks, 3 rods, not just because of the two or three different displacements, but because of design flaws, head cranks, weird gasket problems, ... -- Frank Swygert Publisher, "American Motors Cars" Magazine (AMC) For all AMC enthusiasts http://farna.home.att.net/AMC.html (free download available!) _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com