4.11's???
#1
TECH Fanatic
Thread Starter
4.11's???
This is probably a stupid question but is this a price for front and rear 4.11's. I thought they where a lot more expensive
1999-2008 Chevy 4wd GM 8.6" 8.25" IFS Master Install 4.11 Gear Pkg - Ron's Machining Service
With my 22 x 10" and 33" I think some gears would help pulling my boat tremendously, I have the 3.42 now. How much should an install run. I'm not sure if it's something I could do my self since I never done anything like that before.
1999-2008 Chevy 4wd GM 8.6" 8.25" IFS Master Install 4.11 Gear Pkg - Ron's Machining Service
With my 22 x 10" and 33" I think some gears would help pulling my boat tremendously, I have the 3.42 now. How much should an install run. I'm not sure if it's something I could do my self since I never done anything like that before.
#2
TECH Addict
iTrader: (7)
This is probably a stupid question but is this a price for front and rear 4.11's. I thought they where a lot more expensive
1999-2008 Chevy 4wd GM 8.6" 8.25" IFS Master Install 4.11 Gear Pkg - Ron's Machining Service
With my 22 x 10" and 33" I think some gears would help pulling my boat tremendously, I have the 3.42 now. How much should an install run. I'm not sure if it's something I could do my self since I never done anything like that before.
1999-2008 Chevy 4wd GM 8.6" 8.25" IFS Master Install 4.11 Gear Pkg - Ron's Machining Service
With my 22 x 10" and 33" I think some gears would help pulling my boat tremendously, I have the 3.42 now. How much should an install run. I'm not sure if it's something I could do my self since I never done anything like that before.
That is for the front and rear diffs.
If you have a 6spd, get 4.56s.
#3
TECH Fanatic
Thread Starter
you don't think 4.56s will be turning to high of an RPM at 75 with 33's even with the 6 speed.
I thought about 4.30's
I thought about 4.30's
#5
TECH Senior Member
iTrader: (2)
If I did these calculations right using an online mph calculator here are the results.
Using the 6L80e with a 4.56 rear gear with 33in tires, a .667 6th gear ratio and a 1.1 transfer case ratio the rpms are roughly 2000-2100 at 65 mph.
Then it bumps up to around 2300ish at 75mph.
Using the 6L80e with a 4.56 rear gear with 33in tires, a .667 6th gear ratio and a 1.1 transfer case ratio the rpms are roughly 2000-2100 at 65 mph.
Then it bumps up to around 2300ish at 75mph.
#6
TECH Fanatic
Thread Starter
Well that doesn't sound that bad. Pulling my boat in 5th around 65 I think I'm running right around 2400 rpms. With these 33's it wants to down shift to 4th at the smallest of hills.
#7
TECH Fanatic
Thread Starter
I was wrong 5 gear at 65 is 2000 RPMs now with 33's and 3.42's
Trending Topics
#9
TECH Veteran
iTrader: (5)
Since you are concerned about 5th gear @ 65 mph for towing:
3.42 = ~1900 rpm
4.10 = ~2300 rpm
4.30 = ~2400 rpm
4.56 = ~2600 rpm
Same setup @ 75 in 6th for further comparison:
3.42 = ~1750 rpm
4.10 = ~2100 rpm
4.30 = ~2200 rpm
4.56 = ~2350 rpm
I have been considering 4.10s myself when I have to eventually open up the front differential for a rebuild.
3.42 = ~1900 rpm
4.10 = ~2300 rpm
4.30 = ~2400 rpm
4.56 = ~2600 rpm
Same setup @ 75 in 6th for further comparison:
3.42 = ~1750 rpm
4.10 = ~2100 rpm
4.30 = ~2200 rpm
4.56 = ~2350 rpm
I have been considering 4.10s myself when I have to eventually open up the front differential for a rebuild.
#10
TECH Fanatic
Thread Starter
Thanks for that
I think I would rather have 4.30s since we do take my truck for family trips to the beach. So I do drive at 75-80 mph some. I'm just not sure if 150 RPM would make a difference in MPG. If it doesn't I'll just get 4.56
I think I would rather have 4.30s since we do take my truck for family trips to the beach. So I do drive at 75-80 mph some. I'm just not sure if 150 RPM would make a difference in MPG. If it doesn't I'll just get 4.56