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Originally Posted by Xist
Is that for the 1986 S-10? The S-10 was what you called full-sized? How does the 2.8L engine prove the fuel efficiency of a 2.8L diesel from three years previous?
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I don't know about any GM 2.8L diesel, but that god awful 2.8L POS gas engine they put in everything was also in a Camaro with a 5-speed manual I used to have. It would get up to 29mpg on the highway. Put the 2.8L POS in a boxy truck and I would expect it to get quite a few little less MPGs.
Now if you are talking 6.2L and 6.5L diesel engines in an S-10 then yeah they can get right about 30mpg.
Only problem is GM never put a that diesel in production S-10, so there would be no EPA rating.
There is at least one person over on the dieselplace.com/forum that has built a diesel powered S-10 and they are claiming to get something like 28 to 30 mpg.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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