If you have a "pull your own parts" yard nearby, you shoud be able to do this on the cheap. A five speed will definitely help -- I'm assuming you have a three or four speed now. I'd skip a header and go with the 4.0L head and EFI. Even the older Renix system is relatively easy to install, but a 91+ model would be easier since the computer is under the hood. You will need a stick shift computer. For the ultimate in efficiency and to keep about the same power you have now, consider a 91+ AMC/Jeep 2.5L four. You will want the port injection model. You can get that and the five speed from a 2WD Cherokee. You'll need rather low rear gears to keep power up, but the Cherokee used 4.10 gears and still got good mileage. You should be able to get by with 3.50-3.73 gears. To little gear and mileage will go down, not up. On September 17, 2005 Thomas L Middlemast wrote: > Thanks to all on the list! > > > Due to all of you I am now going to try to see just how far I can take my > '72 258 gremlin x into the world of efficiency. I know that were this a more > rare car this would be silly, I should keep it original. But this is... > MINE! > > What I plan on doing is adding "anachronistic" parts, they are for AMC, just > not (necessarily) 1972. Like 4.0 heads, fuel injection, headers and a T5 > overdrive. > > My question is - Any Ideas what else I could be looking at to make the > "super-E" gremlin? Right now it runs great; I average about 20 mpg on the > drive to and from work, mixed speeds, this is a basic car, no auto/air/power > anything. perhaps I am being silly, cost <> benefit. > > Thanks! > > > Thomas L Middlemast ============================================================= Posted by wixList Archiver -- http://www.amxfiles.com/wixlist