In the never ending search for more mpg's I am searching for a 3.54 final drive for my B210. Most 210's and B210's had 3.70's [like mine] or if equipped with an auto trans, 3.90's. OK, so my factory shop manual says that a the 3.54's were available in the 1980 210 with 1.5 liter engine and a five speed. That certainly narrows the opportunities to find one. So I know where there is an '81 210 with that driveline in an old junkyard up in the woods. Here it is.



This place is up on a mountain and you can only get in there by foot. It isn't fun to carry everything you need for a job like this up that hill. But I am serious about improving mpg's so I rise to the occasion.



Pulling the axles......



I brought a come-a-long and other paraphernalia to get it done.






Doh! It's not a 3.54 but a garden variety 3.70 diff. My book said the 1980 cars had the 3.54, but this is an '81. I don't have a manual for the '81's. I thought they'd be the same? Anyone know what final drive an '81 [US] A15 5-speed car is supposed to have?