13 posts - 4 authors - Last post: Aug 11Gear choice: 3.08 or 3.42? Drivetrain & Performance.

3 posts - 3 authors - Last post: Aug 14, 2010How much do the 3.42's effect MPG's? also, thinking the 3.08 matched with the 6 speed tranny might not be bad. right now I have a 2004 tahoe .

13 posts - 12 authors - Last post: Aug 24, 2008Opinions on 3.08 vs 3.23 vs 3.42 rear ratios? Got gears?

Apr 8, 2008 – Change 3.08 gears to 3.42? how much of a difference would this be? Ideally i would like to find the whole lsd unit and gears from a y87. or if .

25 posts - 14 authors - Last post: Jun 12, 2010. to find the best option package to suit our needs I wound up buying one with the 3.08 axle thinking it had the towing package with the 3.42.

17 posts - 9 authors - Last post: Jul 9, 20093.08 or 3.42 for Low RPM Highway Use? Transmission & Driveline.

4 posts - 3 authors - Last post: Jun 3, 2010New gearing option for this year is 3.08 (not available w/HD towing package). 3.42 is standard w/HD towing package. I put on about 18000 .

2.41, 2.56, 2.73, 3.08, 3.23, 3.42, 3.55, 3.73, 3.90, 4.10. 2.41, 6%, 13%, 28%, 34 %, 42%, 47%, 55%, 62%, 70%. 2.56, -6%, 7%, 20%, 26%, 34%, 39%, 46%, 52% .

7 posts - 3 authors - Last post: Aug 4, 2010I've found a few Sierra's I like (2010 CC 4x4 w/5.3) and all seem to have the 3.08 axle ratio. I had an 06 Silverado with the 3.42 and I thought it .

2 answers - Aug 19, 2010Looking to buy 2010 Silverado crew 5.3L 6 speed, with either a 3.08 . lower gear ratio = lower rpms on top end = less gas consumed. .

9 posts - 5 authors - Last post: Aug 4I was wondering what the difference is between a 3.08 rear axle ratio and a 3.42 rear axle ratio on an GMC Sierra with the 5.3 engine and 6 .

9 posts - 3 authors - Last post: Sep 4, 2010I'm looking at swapping in taller gears in my Skylark, time to bring the cruising rpm down. Going from 3.70's to ?? What out there that's good .

Mar 31, 2011 – The 4.8l and the 5.3l are only offered with either 3.08 or 3.42 gearing but with the 6 speed transmission. It amazes me how few so called .

12 posts - 8 authors - Last post: Sep 29, 2010Around town driving, the 3.08s & 3.42s get about the same mileage. Fuel mileage aside, I like the 3.42s better around town & the 3.08s better .

10 posts - 10 authors - Last post: Jan 24, 2009I just kept noticing that certain cars seemed a lot quicker than others. I'd imagine that 3.08 to 3.42 would be sweet and going to 3.73 would be .

11 posts - 6 authors - Last post: Jul 4, 2007rpm's different from 4.10 to 3.42 or 3.08's Transmission & Driveline.

1 answer - Jul 26One has 3.08 gears the other has 3.42 gears. Two things will the low 3.42 .

25 posts - 15 authors - Last post: Sep 6, 2010My Triton weighs very close to 3000 pounds. Could someone please explain exactly what the 3.08 ratio means compared to say a 3.42 ratio. .

18 posts - 12 authors - Last post: Dec 13, 2010I am looking at buying a 2010 silverado crew 1500 5.3L w/either a 3.08 or 3.42 gear ratio. we tow a boat about once a month- 17 ft fishing boat. .

Apr 19, 2010 – which would be in a new silverado. daily driven but will add a cam to get more gittyup and diff will comwith a locker.

37 posts - 21 authors - Last post: Nov 28, 2009[Archive] 3.08, 3.42 or 3.73 posi..?? Transmission & Driveline Topics.

11 posts - 10 authors - Last post: Jun 17, 20103.08 to 3.42 is a SMALL difference. . I gross at over 26000 lbs in my .

33 posts - 12 authors - Last post: Feb 9Is it 3.08, 3.42, or 3.73? I've heard of some swapping their 3.08's for 3.42's in their impalas but I have a hard time believing GM would call .

10 posts - 10 authors - Last post: Sep 24, 2010Rear axle ratio for towing 3.42 or 3.08 chevy Other Topics.

17 posts - 12 authors - Last post: Jul 26, 2009your opinion on 3.08 vs 3.42 for street Chevelle Tech. . After driving it for years with a 3.08, 12 bolt, I bought a Motive 3.42 R & P and .

Aug 7, 2011 – Hey guys,I got a 2010 silverado with 6-speed, 5.3 and 3.08 gears I pull a 5000 boat, and cattle trailer pushing 6000lbs. I was told this would not .

If you swap a 3.42:1 with a 2.93:1 you are switching to a higher ratio. . to do a lot of interstate cruising have higher gears, generally in the 2.48 - 3.08:1 range. .

Aug 15, 2011 – I was looking at possibly buying a 2010 Sierra 4X4 with the 5.3/6 speed. The spec. sheet says that the truck comes with the 3.08 rear axle.

38 posts - 20 authors - Last post: May 4, 2004Worth the $ for a 3.42 vs a 3.08? Transmission & Rearend. S10Forum.com is the place to discuss Worth the $ for a 3.42 vs a 3.08?

7 posts - 4 authors - Last post: Aug 6, 20083.08 vs 3.42 - Discuss Chevy, Drivetrain, and Chevrolet Tech topics in the Chevy forums at Chevy High Performance Magazine.

Aug 12, 2008 – Final Drive Ratio(s), 3.08, 3.42, 3.08. Max Towing (lbs.) 7000, 9600, 6100. Fuel Economy (city/hwy, mpg), 15/21, 14/20, 21/22. All Models are .

Jul 10, 2011 – Buying a new chevy z7 crew cab soon and trying to decide. Only pull a utv and trailer only 15-20 times a year around 2000 pounds. Most Of .

6 posts - 5 authors - Last post: Jul 24, 2009The 3.42 should be fine. avoid the 3.08 like the plague though. GM is labeling these "XFE" models for extra fuel economy. They are slugs. .

20+ items – The source for official specifications, payload, towing capacity, .

4 posts - 4 authors - Last post: Jan 5, 2010. give me some advice on choosing an axle ratio for a Tahoe? The dealer info is vague. Is there a big difference between a 3.08 and 3.42?

3 answers - Apr 7, 2006Top answer: The 3.08 gear ratio means the drive shaft will rotate 3.08 revolutions to 1 rotation of the rear tire. Thus, the 3.08 will have lower rpms at highway speeds, but not as .

13 posts - 9 authors - Last post: Jul 28, 2003I'm not sure if this is the correct forum, but I was thinking of changing my rear. I currently have a 3.08 w/ a 5.0 liter. I'd like to have a little.

10 posts - 9 authors - Last post: Jul 14, 20033.08 vs. 3.42 262ci Forum (4.3). S10Forum.com is the place to discuss 3.08 .

14 posts - 9 authors - Last post: Mar 20, 2010The 3.08 is rated for 7200 pounds and the 3.42 is rated for 9800 pounds. The 3.08 has an EPA rating of 15/21 MPG. The 3.42 is listed at 14/18 .

6 posts - 3 authors - Last post: May 3I am looking for the full axle with any of those gear combos to put on my 78 t/a. unfortunately I have the stock 2.41 s and I need the 3 series carr.

9 posts - 6 authors - Last post: Apr 8THE 5.3 MOTOR HAS EITHER THE 3.08 OR 3.42. MOST OF WHAT I READ SEEMS TO INDICATED THE 3.42 IS THE PERFERRED RATIO. .

25 posts - 9 authors - Last post: Jan 9, 2010what I want to know is what you guys think about 3.08's with about a 28-29 tall tire . that will put me in the 2400-2700 range with my trans. .

5 answers - Jul 20, 2007Again low gears, 3.42, 3.73, 3.89, 4.10 gears pulls (has better acceleration .

3 posts - 3 authors - Last post: May 21, 2007I called my buddy at the Chevy dealer and he looked it up on the computer and found 2001 Burbs could have been equipped with a 3.08, 3.42, .

10 posts - 5 authors - Last post: Aug 29, 2004I have a 78 chev 10 bolt van axle with 3.42 ring and pinion I have an 82(?) chev 10 bolt 4x4 axle with 3.08 ring and pinion I need to build a chev .

3 posts - 3 authors - Last post: Apr 24Over that, it's worth having the 3.42. What I *don't* understand is the huge rating difference between the 3.08 and 3.42 gears (6900 vs 9500 lbs) .

3.08 axle ratio and fuel saver mode are standard with Silverado trucks equipped with a . Towing with NHT Enhanced Trailering Package (6.2L with 3.42 axle): .

10 posts - 6 authors - Last post: Aug 21, 2010Message Forums covering Chevrolet from 1912 until present.Including history, clubs, chat, Chevy subject matter experts, VIN decoding, .

17 posts - 11 authors - Last post: May 24Honestly, in the real world, I would expect very little difference in MPG between the 3.08 and 3.42. The 6L80 has a very deep overdrive ratio so .

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