4L80E gear ratio

[farmtruc]

Hey guys, can anyone let me know what the gear ratios are for the 80E , also a side by side of the 60E would be nice?

I'm installing an 80E real soon and I need to decide on my gear ratio.

thanks,

allen

[vv8]

ok 4l60e ------------- 4l80e

1st-3.059:1 --------- 2.482:1
2nd-1.625:1--------- 1.482:1
3rd-1.000:1 --------- 1.000:1
4th-0.696:1 --------- 0.750:1
hows that allen lol

[farmtruc]

hmm, i was thinking 3.08's for the 60E, so now i might go with some 3.42's.

i think the turbo will like that,


allen

[vv8]

yap they sure will now all we have to do is put your 4.10 in mine and my 3.42 in yours

[Hit Man X]

The turbo needs a good load to push against...so 3.42:1 may work well but a 3.55:1 would perhaps be better due to the taller truck tires. Buick GN's came with a 200-4R with a 2.74:1 1st gear and 3.42:1 gears.

[moregrip]

can't you get a 4l80e w a lower 1st gear?

[Hit Man X]

Originally posted by GreenMachine@Aug 19 2004, 11:52 PM
can't you get a 4l80e w a lower 1st gear?

Yup sure can, it's about $500 tho!

I read that apparently the '02+ 4L80Es have 5 pinion planets also...

[moregrip]

Originally posted by Hit Man X+Aug 19 2004, 10:01 PM--><div class='quotetop'>QUOTE(Hit Man X &#064; Aug 19 2004, 10:01 PM)</div>

<!--QuoteBegin-GreenMachine

@Aug 19 2004, 11:52 PM
can&#39;t you get a 4l80e w a lower 1st gear?

Yup sure can, it&#39;s about &#036;500 tho&#33;

I read that apparently the &#39;02+ 4L80Es have 5 pinion planets also... [/b]

what does this mean? explain please.

[Hit Man X]

Originally posted by GreenMachine@Aug 20 2004, 12:12 AM
what does this mean? explain please.

Basically inside the tranny there&#39;s this big ass gear thingee...called a planetary gear set. Some have one like the Ford AOD others have two like the 4L60E and some have 3 like the Allison 1000&#33;



Looks like that.

Anyway... with more pinions, it can distribute torque loads over more gears thus upping the torque capacity. Ford went from 4 pinion planets in the E4OD to 6 in the 4R100 when it was updated. The E4OD/4R100 is like the 4L80E.

But i read that in &#39;02 GM went to 5 pinion planets in the 4L80E somewhere...that means they are stronger. But all &#39;99+ 4L80E&#39;s have other improvments also.

[moregrip]

thanks hitman, nothing but good news for me