2.5l & 2.8l 3.73 or 4.11

[Rock Yacht]

Which goes with what motor (typically) Obviously 84 - 86 vintage

Thanks

 

[4xBob]

Usually, the 2.8 l went with 3.73 axle ratios, and the 2.5 l got 4.10s (4.11). There have been other combinations reported, so best to check ( the tag on the rear dif, or count the revolutions, or open the dif and count teeth on ring and on pinion).

 

[ren]

My '84 with the 2.5 and auto has 3.54 gears. talk about SLOW. So, yeah, defenitely verify the gears.

 

[Ghost]

84-86 is pot luck.... aqnything from 3.31 fuel economy package, to 4.10's! I have seen 3.55's and 3.73's the most in those years. With 4.10's being not as common in those years as what people think! Oh yea I have yet to see a 84 with 4.10 too... they usually have 3.73's!

 

[85xjwoody]

My 85 has a 2.5 engine, 3 speed 904 tranny, with 3.73 gears. With 31" tires it is ok on the highway but crappy in the city. I will be going to 4.56's in the future.

Kim.