40 mpg s10 2.2L

[Georgboy]

My question is how possible would it be to get a 2.2L s10 5 spd with a 2.41 gear rearend to a achieve 40 mpg?

[Daox]

Not without aeromods and/or a lot of low speed P&G.

[Olympiadis]

Originally Posted by Georgboy

My question is how possible would it be to get a 2.2L s10 5 spd with a 2.41 gear rearend to a achieve 40 mpg?

Well at first I thought that's not enough gear to be able to use your 5th gear, but then realized that a 2.2L was the Isuzu diesel (1985).
With whatever factory gear they came with (was often 3.73:1 or 4.10:1), the old EPA rating for highway was 36 mpg, and the new rating is 33 mpg, so that's really not that far to go.
I would say that it's very possible.
The 1985 model was not heavy.
Diesels handle the extra loading from the gear superbly, and you just might realize a very efficient combination with it running at such a low RPM at speed.

Compare Side-by-Side


Edit: maybe you meant the 2.2 Vortec SFI ?
Sorry If I got confused.

[Olympiadis]

...ooops
I was trying to edit above post and cat hit keyboard. lol.

[oil pan 4]

Is it a 2.2L diesel?

[Georgboy]

No gasoline...

[Olympiadis]

You would likely have to boost your low RPM torque by quite a bit to be able to achieve your goal. It would be difficult, but not impossible.

[Georgboy]

Sounds like fun to me .....

[JRMichler]

Originally Posted by Daox

Not without aeromods and/or a lot of low speed P&G.

This.

And make sure that the engine is not going into fuel enrichment when driving at low RPM.

[Georgboy]

At what rpm does this happen?