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R-160 Clutch Diff with 4.38 gear ratio.


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Hey I was wondering if people think that the 4.38 would be too low of a gearing to use on the streets

with an modded L20b? I'm trying to build a canyon carver, and originally thought that the lower ratio

would be more responsive on mountain roads. I hope it wouldn't mean im sitting at 4k cruising on the

freeway, what does everybody think?

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Oh ok thank's Mike ya it is the Dogleg, do you know what car the Dogleg comes from originally? I always forget. I am thinking of getting the Wolf Creek CV Axles and just running it as 4.38, even though some Datsun pros I have talked too said don't do above a 4.11. I figured this type of gearing might be better for canyon carving and twisty roads.

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It was the stock standard transmission on the '77-'79 S10 (200sx) There were no 4 speeds only 5 speed and automatics.

 

It was an optional 5 speed on the A10 ('787/'79 HL510)

 

 

 

Gears multiply torque at the expense of RPMs. Short gears allow higher revs at lower speeds. If you want mileage and top speed then lower gears are not the best. In a strictly racing application where top speed on a track is 100MPH it only makes sense to not have gearing that allows 130 at maximum engine RPMs. Four thousand at 60 is fine you have plenty of RPNMs left for highway speed BUT you may not like this. Again a zx with 25% overdrive is the best of both worlds. 

 

I have 4.11s in my 710 and love them. Mileage recently was about 27/28 average over 3K miles.  

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