moodier Report post Posted September 5, 2009 Hi;Recently purchases a 1987 Georgie Boy with a 400 Ford.NOw the manual says it has a 460 but dealer that recently worked on it says no way it is a 400 so assume he know one from the other!Anyway it has a sticker on the bumper Gibson Equiped.Onlt thing I can see is that it has a nice set of headers to one large muffler and exhaust pipe.Had hoped for better milage as is only a 24'but at 55 in cruise on level Az roads only gets 7MPG.Wonder what the Gibson is or maybe it is only a manifold?Anyone have any experience with it?Thanks! Share this post Link to post Share on other sites
wolfe10 Report post Posted September 5, 2009 Gibson DOES make headers: http://www.gibsonperformance.com/ And I would call Ford directly with your chassis VIN. I suspect you do have the 460. Brett Wolfe Share this post Link to post Share on other sites
moodier Report post Posted September 6, 2009 Thanks Brett:According to the manual there is only the 460 avaiable on this chassis!Could be that the engine was changed!They said that they are considerably different.This is a speed shop not an RV dealer who works with these engine all the time!All manual info states there was no 400 on these chassis!Thanks for the reply!! Share this post Link to post Share on other sites
