My baby is on EGay in the market for a new truck
05-04-2013, 06:38 AM
#21
Registered
Join Date: Feb 2011
Location: Tiline, KY
Posts: 388
Likes: 0
Received 0 Likes
on
0 Posts
I don't believe it!! It cant be! Only diesels go 300+k miles, and get 32mpg towing a 47apache over pikes peak.
Someone told Icdedppl today that the 8.1 truck wont have enough power to pull his boat up the ramp, and will be doing 35mph in the right lane on the highway??
So what did everyone tow 38 cigs and other big offshores with back in the 80's or 90's, before the monster diesels were around?
Someone told Icdedppl today that the 8.1 truck wont have enough power to pull his boat up the ramp, and will be doing 35mph in the right lane on the highway??
So what did everyone tow 38 cigs and other big offshores with back in the 80's or 90's, before the monster diesels were around?
Sorry, Hijacked a little. Ive wanted to find an 8.1 for quite sometime but they are rare. Good luck.
05-04-2013, 10:11 AM
#23
Banned
iTrader: (1)
I have a 2001 3500 crew, 8.1, Allison trans, 4x4 loaded with 41,000 miles. I bought it new and thought about selling it until I looked for 1 for sale to estimate its value. Yes they are hard to find and hold their value. I was considering a 2010 Duramax (pre emissions) loaded up because of the GPS/Back up camera option but I think I will just go aftermaket for the options mine is missing. My 8.1 gets 12-13 MPG highway and 7-8 towing the big cat.
Last edited by brian41; 05-04-2013 at 10:14 AM.
05-04-2013, 10:17 AM
#24
Registered
iTrader: (3)
Lets looks at the Allison trans. Heres the ratios on the 2006 and newer (6th gear added)
1st=3.10=12.7:1 x 450FT lbs (stock 8.1)=5715FT lbs
2nd=1.81=7.42 x 450=3339ft lbs
3rd=1.41=5.78x 450=2601 ft lbs
4th=1.00=4.10x450=1845ft lbs
5th=.71=2.91x450=1309ft lbs
6th=.61=2.50x450=1125ft lbs
Now, lets compare that to the trans in your excursion Dan.
1ST=2.71x3.73=10.10 x525ft lbs(stock 7.3)=5302
2ND=1.54x3.37=5.74x525=3013
3RD=1.00=x3.73=3.73x525=1958
4TH=.71=2.65x525=1391 ft lbs
Of course tire diameter plays a effect on the overall ratio, but my point is, theres so much more to towing power, than just engine output. In the big truck world of semi's, you can take a semi tractor with lets say a 500HP Cat. Stick a standard 10spd fuller trans behind it, with a 3.55 ratio, and compare it to the same truck, but with a smaller 430hp cat, 18spd, 4.30 ratio setup. The 18spd 4.30 ratio truck will pull heavy loads up mountain passes all day, while the 500HP 10spd truck will be hurtin. Its all in the gears man. Max torque to the rear wheels is what gets the load moving. I'd take a 250HP diesel with the right drivetrain over a 300HP diesel with the wrong drivetrain any day.
If you had a 4.10 truck, with 29" tall tires, and desired the cruising rpm of a 3.73, than switching to a 32" tall tire will get you close.
1st=3.10=12.7:1 x 450FT lbs (stock 8.1)=5715FT lbs
2nd=1.81=7.42 x 450=3339ft lbs
3rd=1.41=5.78x 450=2601 ft lbs
4th=1.00=4.10x450=1845ft lbs
5th=.71=2.91x450=1309ft lbs
6th=.61=2.50x450=1125ft lbs
Now, lets compare that to the trans in your excursion Dan.
1ST=2.71x3.73=10.10 x525ft lbs(stock 7.3)=5302
2ND=1.54x3.37=5.74x525=3013
3RD=1.00=x3.73=3.73x525=1958
4TH=.71=2.65x525=1391 ft lbs
Of course tire diameter plays a effect on the overall ratio, but my point is, theres so much more to towing power, than just engine output. In the big truck world of semi's, you can take a semi tractor with lets say a 500HP Cat. Stick a standard 10spd fuller trans behind it, with a 3.55 ratio, and compare it to the same truck, but with a smaller 430hp cat, 18spd, 4.30 ratio setup. The 18spd 4.30 ratio truck will pull heavy loads up mountain passes all day, while the 500HP 10spd truck will be hurtin. Its all in the gears man. Max torque to the rear wheels is what gets the load moving. I'd take a 250HP diesel with the right drivetrain over a 300HP diesel with the wrong drivetrain any day.
If you had a 4.10 truck, with 29" tall tires, and desired the cruising rpm of a 3.73, than switching to a 32" tall tire will get you close.
Platinum Member
05-04-2013, 08:51 PM
#27
I have a 2001 3500 crew, 8.1, Allison trans, 4x4 loaded with 41,000 miles. I bought it new and thought about selling it until I looked for 1 for sale to estimate its value. Yes they are hard to find and hold their value. I was considering a 2010 Duramax (pre emissions) loaded up because of the GPS/Back up camera option but I think I will just go aftermaket for the options mine is missing. My 8.1 gets 12-13 MPG highway and 7-8 towing the big cat.
???Trombone: thats the place i bought it from in 2011, they took some nice pics and the condition is the same if not better so I used em.
05-05-2013, 12:21 AM
#29
I found two like this with 58K and the other with 50K miles this one was a Nevada truck till 2012
http://www.cars.com/go/search/detail...nal&listType=1
http://www.cars.com/go/search/detail...&&aff=national
http://www.cars.com/go/search/detail...nal&listType=1
http://www.cars.com/go/search/detail...&&aff=national
Last edited by ICDEDPPL; 05-05-2013 at 12:31 AM.
