Towing large boats
03-02-2019, 10:25 PM
#41
Senior Member
I'm new to both boating and towing.. I recently bought this boat. Am I okay to tow it just a few miles one way to the ramp and maybe once or twice a year to the Keys from Houston?
03-02-2019, 11:02 PM
#42
Admirals Club 
THT sponsor
Originally Posted by Manoverboard123
I'm new to both boating and towing.. I recently bought this boat. Am I okay to tow it just a few miles one way to the ramp and maybe once or twice a year to the Keys from Houston?
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03-02-2019, 11:05 PM
#43
Senior Member
Originally Posted by Manoverboard123
I'm new to both boating and towing.. I recently bought this boat. Am I okay to tow it just a few miles one way to the ramp and maybe once or twice a year to the Keys from Houston?
Dave
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03-07-2019, 10:48 AM
#44
Not wanting to take this in a different direction....but a quick question.
I tow a 32 Seavee from Tampa down to Key West with a 2017 F250 6.7. I have a 19k rated triple axel trailer. I’m at 22,800 lbs total CAT certified scale (truck at 6,700 + or - and boat/trailer 16,000 + or-) Absolutely no issues towing.
I am somewhat disappointed in the fuel mileage. She coming in at just under 8 mpg.
What are are you guys seeing?
I tow a 32 Seavee from Tampa down to Key West with a 2017 F250 6.7. I have a 19k rated triple axel trailer. I’m at 22,800 lbs total CAT certified scale (truck at 6,700 + or - and boat/trailer 16,000 + or-) Absolutely no issues towing.
I am somewhat disappointed in the fuel mileage. She coming in at just under 8 mpg.
What are are you guys seeing?
03-07-2019, 11:56 AM
#45
Senior Member
Originally Posted by BackCountryTampaBay
Not wanting to take this in a different direction....but a quick question.
I tow a 32 Seavee from Tampa down to Key West with a 2017 F250 6.7. I have a 19k rated triple axel trailer. I’m at 22,800 lbs total CAT certified scale (truck at 6,700 + or - and boat/trailer 16,000 + or-) Absolutely no issues towing.
I am somewhat disappointed in the fuel mileage. She coming in at just under 8 mpg.
What are are you guys seeing?
I tow a 32 Seavee from Tampa down to Key West with a 2017 F250 6.7. I have a 19k rated triple axel trailer. I’m at 22,800 lbs total CAT certified scale (truck at 6,700 + or - and boat/trailer 16,000 + or-) Absolutely no issues towing.
I am somewhat disappointed in the fuel mileage. She coming in at just under 8 mpg.
What are are you guys seeing?
I run a 35" tire and 4.10 gears. The auto has a .70 overdrive.
I did field repair a pretty good boost leak in Montana. I had a split lower intercooler boot and used a bush fix as nothing was available in a remote location. I am sure that is where my fuel economy came from. I am running a large injector and a box. With everything off, I am at 400 RWHP. I also run a set of compounds and a small cam.
Wind resistance is definitely the biggest factor for me. I get 13 towing my 32' 5er at 65mph.
Dave
03-07-2019, 12:44 PM
#46
My brother runs a Cummins and they, I believe, are much more fuel efficient. I’m stock with no modification from factory. While I’m good with straight highway without towing at 18 mpg, I thought I’d be somewhere around 10ish when towing.
Good info, thanks.
Good info, thanks.
03-07-2019, 01:10 PM
#47
Senior Member
Originally Posted by BackCountryTampaBay
My brother runs a Cummins and they, I believe, are much more fuel efficient. I’m stock with no modification from factory. While I’m good with straight highway without towing at 18 mpg, I thought I’d be somewhere around 10ish when towing.
Good info, thanks.
Good info, thanks.
Dave
03-07-2019, 05:28 PM
#48
Admirals Club
Originally Posted by fishin2deep4u
I run at 24mpg empty on summer fuel and 23 on winter fuel.
Dave
Dave
03-07-2019, 06:22 PM
#49
Admirals Club
2015 F250 CCSWB 6.7 3:55 gears 18 around town 21.7 highway 10 pulling 24K CC
2019 Chebby 3500 Duramax longbed dually 3:73 gears 13-14 around town 18 highway 9.9 pulling 24k CC
While the dually is better suited for pulling this load, the Ford would walk circles around the Chebby. Not sure why as the ratings are very close.
2019 Chebby 3500 Duramax longbed dually 3:73 gears 13-14 around town 18 highway 9.9 pulling 24k CC
While the dually is better suited for pulling this load, the Ford would walk circles around the Chebby. Not sure why as the ratings are very close.
03-07-2019, 07:00 PM
#50
Interesting...I’m getting 14.5 around town and 18 highway on my 6.7. Guess the numbers are + or - where they should be towing 16k.
Still thinking the Cummins might have the Ford & Chevy beat with a heavy load.
Still thinking the Cummins might have the Ford & Chevy beat with a heavy load.
03-07-2019, 07:16 PM
#51
Admirals Club
I would love to get the numbers folks get on here
2017 stock Cummins......
Unloaded highway is around 15.
Towing a 23 Maycraft Pilot House that doesn't weigh much more than 6k all in, I get 12.
Going slow through the hills and my property in 4x4, I get 8 or 9.
2010 highly, highly modified Cummins.....
Unloaded highway is 18.
Towing same is 16.
Slow on property I get 15.
2017 stock Cummins......
Unloaded highway is around 15.
Towing a 23 Maycraft Pilot House that doesn't weigh much more than 6k all in, I get 12.
Going slow through the hills and my property in 4x4, I get 8 or 9.
2010 highly, highly modified Cummins.....
Unloaded highway is 18.
Towing same is 16.
Slow on property I get 15.
03-07-2019, 07:23 PM
#52
Admirals Club
THT sponsor
I drive a 2018 Ram 3500 almost every day at 8 mpg. I rent Fords and Chevys and still get about the same mileage. 16mpg towing? Maybe down hill.
03-07-2019, 07:46 PM
#53
Originally Posted by cajflynn
I drive a 2018 Ram 3500 almost every day at 8 mpg. I rent Fords and Chevys and still get about the same mileage. 16mpg towing? Maybe down hill.
I was thinking 7+ towing was low. Guess I’m where it should be. Wish I had a larger tank.
That 8 around town (empty) sounds low?
03-07-2019, 07:49 PM
#54
Senior Member
Originally Posted by cajflynn
I drive a 2018 Ram 3500 almost every day at 8 mpg. I rent Fords and Chevys and still get about the same mileage. 16mpg towing? Maybe down hill.
03-07-2019, 07:50 PM
#55
Senior Member
Originally Posted by BackCountryTampaBay
To be fair...straight highway with computer reset 400 + miles, 18 or slightly lower depending on speed. Around town, 14’sh.
I was thinking 7+ towing was low. Guess I’m where it should be. Wish I had a larger tank.
That 8 around town (empty) sounds low?
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03-08-2019, 11:51 AM
#57
Senior Member
Originally Posted by ERG153
Thats pretty good considering the 4.10s and 35s!
The fifth wheel and boat are virtually the same weight. But the boat has much more wind resistance. Years ago I towed a 3rd gen Dodge on an equipment trailer to Canada. I never broke 9mpg. Weight was probably close to the same as the other examples. Also, if I can't run at around 1800 rpm towing, my mileage takes a serious hit. That was the reason for the regear. With 3.54s I had to be going much faster than I wanted to tow at to be at the sweet spot for torque.
I used to pull a jet sled (around 3Klbs) every weekend hundreds of miles. I would get 17-18mpg at 70mph. That thing was an open tiller river boat and tucked real tight behind the truck. That setup had 3.54s and 33" tires.
My stock mileage was around 18mpg highway and 15 around town before making changes.
Dave
03-08-2019, 12:22 PM
#58
Senior Member
My '15 2500 Duramax got about 9-10 mpg towing 7500# boat/motor/trailer
Originally Posted by Selser
C'mon man.....its THT. Everyone on here gets good milage. Even in their boats, and it always seems to improve when they are selling it.
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