3.42 with a 4l80e

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Apr 1, 2014 | 08:49 PM

#21

1FastBrick

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From: JunkYard

Quote:

Originally Posted by hsiriyob

Thanks for the response. I'm looking for a street gear. With the 4:10's I have little use of my first gear and my engine spins 2500-2600 at 70. 30" tire. I'd like to drop my rpms to about 2000 witch is the 3.42. I'll look at the 3.73 and see what the rpms look like

If your 4L80 with a 30 inch tall tire:

3.73 will put you around 2200 RPM

3.42 will put you around 2000 RPM

HTH

I still like the 3:73 with the 4L80E

The 1 truck I drove with 3:42's and an 80E was a turbo and I still didn't like the gear ratio. I think the tire ratio was smaller too.

Apr 1, 2014 | 09:02 PM

#22

Suburbazine

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From: Baton Rouge, LA

Quote:

Originally Posted by 1FastBrick

Is your tire size 26 inch tall with the 4L80?

Yes. 235/50ZR16.

http://imagizer.imageshack.us/v2/800...0/819/miq3.jpg

Apr 3, 2014 | 03:03 PM

#23

Fast355

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From: Euless, TX

Quote:

Originally Posted by hsiriyob

Anybody running a 3.42 with the 80e. I like the idea of cruising at 2000 rpms, but im not sure if its the best fit for my setup?

I had a 10 bolt 3.42 behind my cammed 330 RWHP 5.7/4L80E in my Express with the B82 factory converter that stalls ~2,400. Maybe it was the 6,200 lbs curb weight, but it was a slug compared to the S10 stalled 4L60E that was in it before. When I broke a spider gear I put a 3.73 geared 14-bolt in its place. Considering regearing to 4.10s soon. Being able to run 50 mph in 1st gear and over 90 mph in 2nd @ 5,500 rpm is pretty cool though.

Apr 3, 2014 | 03:30 PM

#24

Ferocity02

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I have 3.42s and 31" tires and it's not that bad around town. My commute is mostly highway so that's mainly why I went with them.

Apr 3, 2014 | 06:16 PM

#25

hsiriyob

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From: Katy, Texas

Quote:

Originally Posted by 1FastBrick

If your 4L80 with a 30 inch tall tire:

3.73 will put you around 2200 RPM

3.42 will put you around 2000 RPM

HTH

I still like the 3:73 with the 4L80E

The 1 truck I drove with 3:42's and an 80E was a turbo and I still didn't like the gear ratio. I think the tire ratio was smaller too.

I can live with a couple hundred more rpm's. I thinks the 3.73 is going to be a good compromise! t6axis also recommended the 3.73's...

Apr 3, 2014 | 08:11 PM

#26

1FastBrick

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From: JunkYard

Quote:

Originally Posted by hsiriyob

I can live with a couple hundred more rpm's. I thinks the 3.73 is going to be a good compromise! t6axis also recommended the 3.73's...

In my Opinion I think there a good all around choice.

Apr 6, 2014 | 02:30 AM

#27

Ron_Stoppable

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im so glad i read this, i thought something was wrong with my setup. i have an 80e in my s10 with 3.42s and it feels like a slug off the line, much better when its rolling though. im swapping to a 8.8 with 3.73s so hopefully thatll cure my issue.