http://ecomodder.com/forum/showthrea...wap-20678.html
the 4 banger in the sunfire was a piece of crap. All I was doing was fixing it and it never wanted to run. The 3800 gets good mileage and has plenty of power and I already have it.
FWD transmissions have chain/sprockets on the input side. They have to, to get the gears away from the crank axis. If you have a FWD, look into changing the chain and sprockets to a different ratio.
If I got 36 in the olds then it should be about the same in the sunfire. It weighs 800 lbs less and is more aerodynamic. Yeah, it'll be fast. That means I can get out of the way quicker. The old 4 banger got about 25 mpg with the gearing and high stall. The new converter has a 1420 stall and the gearing will be brought down and that should give me some decent mileage numbers to work with. I can always gear it down more later or put taller tires on it.