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Plowing with 3:42 gears?

Discussion in 'Chevy Trucks' started by turbo38sfi, Jan 9, 2007.

  1. turbo38sfi

    turbo38sfi Senior Member
    Messages: 289

    My truck has 3:42s. When I purchased it I was hoping for 3:73s which is what my Tahoe had, but my only choice with the rest of the options I wanted was either 3:42 or 4:08.
    4:08s would have been killer so I opted for the 3:42s...wondering how this will be when plowing for low end slow pushing...

    Now, if we ever got any damn SNOW up here in the Northeast I would be able to tell for myself instead of asking!!
  2. JohnnyU

    JohnnyU 2000 Club Member
    Messages: 2,040

    I've pushed with 3.42's, I've also towed with them. It wasn't hardly noticeable between the truck with 3.73's and 3.42's. If the truck seems like its working hard, drop the transfercase into low-range.
  3. lawnmedic

    lawnmedic Senior Member
    Messages: 703

    What is the rest of your truck? please give us some more info...
  4. DJ Contracting

    DJ Contracting PlowSite.com Addict
    Messages: 1,392

    It will work

    I have 3:42's in the 93" and in the 99" and 3:73's in the blazer it will work, however when I had my 87" that thing had 4:10's and you could sure notice the difference.
  5. Proscapez LLC

    Proscapez LLC Senior Member
    Messages: 293

    I would rather have the 3:42 compared to the 3:73, your saving gas.
    My 89 had 4:10 and it would damn near red line at 70 mph, I wouldn't dare try and drive it faster then that.

  6. diehrd

    diehrd Senior Member
    from NY
    Messages: 199

    I had a 2dr Tahoe had 3.42 (last guy put that in not me) I had no issues plowing

    This Tahoe 4dr has 3.73 plows fine..The only real difference is the 3.42 was not a locker rear end the 3.73 is,the difference is pretty big when driving on the roads in 2wd, it is a lot easier with the plow and the locker 3.73
  7. 'Rude Dog

    'Rude Dog Member
    Messages: 56

    3.42 gears...

    I plow with 3:42' s in my 93 k2500 - with the 4l60e trans, it has a very low 1st gear, which more than compensates for the "highway" gearing - my previous plow truck was an 86 body, on a '78 full time chev. frame,that truck had 3:08's under it, with a 350 turbo tranny- built 350 'mota- like plowing with the '93 MUCH better, way easier on gas !!! If you have a 4 speed auto, with o.d., you should have plenty of power with the 3:42's 'Rude Dog
  8. Brian Young

    Brian Young PlowSite Veteran
    Messages: 3,394

    My 94 had 355's but with 31" tires it was more like 330 something gear ratio. Our 06 has 410 posi and I can honestly say there is a huge difference from a starting position. As far as fuel mileage, I only notice a big drop when driving on the thru-way (which has only been 3 times) at 70 mph, it runs around 2500rpm's. Ford's 5 speed auto is a nice thing and around town I might hit 2k rpm's once in awhile.
  9. turbo38sfi

    turbo38sfi Senior Member
    Messages: 289

    Thanks for the replies guys. The rest of my truck... 2006 Crew Cab Silverado. 5300 Vortec w/locker 3:42 and auto trans. New Snoway that looks great...no clue how it works cause we have no damn snow!
  10. jgsxr750

    jgsxr750 Member
    Messages: 84

    i have same truck with an 7-6 pro plow on it . handles the weight great and towed a 3 sled snowmoblle trailer . the 3.42 's had no trouble mantaining 70plus miles per hour on the trip. i don't see any problemwith the 3.42 over the 3.73. just better gas miles.