Tow capacity increase
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New User
Joined: Apr 2015
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Tow capacity increase
I have a 1990 f250 carb swaped 302 5 speed 2x4. 3.55 rearend
What could i do to increase towing capacity. I need to tow about 6000-8000lbs. Ill be towing a boat
Ive considered adding a few leafs in the rear and. I also have a dually wheel kit i could put on this truck. Would these help
What could i do to increase towing capacity. I need to tow about 6000-8000lbs. Ill be towing a boat
Ive considered adding a few leafs in the rear and. I also have a dually wheel kit i could put on this truck. Would these help
Fleet Owner
Joined: Oct 2005
Posts: 20,785
Likes: 1,751
From: Kentucky
That's a start
Honestly I have to say you have the wrong vehicle to seriously consider towing 6000-8000 pounds. That 302 is just not going to work, especially with 3.55 gears.
Fleet Owner
Joined: Oct 2005
Posts: 20,785
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From: Kentucky
Do not consider using your rear bumper for anything bigger than a small trailer. You DEFINITELY need a real frame mounted hitch.
So once you have the chassis properly setup to tow then you come back around to having a 302 engine and 3.55 gears...
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Between 4.10 and 4.56 what rpms should i expect to see the truck at when crusing in 4th or 5th gear
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FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
The manual transmission is the weak link in that truck which is little more than an F150 with a larger rear axle, as it sits right now it's only rated to tow about 4000lbs(7800lb GCWR). With an auto trans and 4.10 gears tow capacity still only goes to 6k which gets you closer but still well short of the goal. Bottom line is you're bringing a knife to a gun fight so there is no way you can win, time to start looking for a different truck.
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Well i think i still got a good deal paid 500, and all i had to do is put a new clutch in it
I think ill put 410 or 430s in it an and ill just get a better truck later when iM ready to get a bigger boat
The campers 4000 lbs so i figure with 4.30s it should be ok
And my bass boat is around 3000 lbs. only thing im not sure about is pulling mu ford 2600 tractor ill have to research the weight of it
I think ill put 410 or 430s in it an and ill just get a better truck later when iM ready to get a bigger boat
The campers 4000 lbs so i figure with 4.30s it should be ok
And my bass boat is around 3000 lbs. only thing im not sure about is pulling mu ford 2600 tractor ill have to research the weight of it
Postmaster
Joined: Mar 2013
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From: Over There
A 1990 2wd f250 with a 302, decent chance it's a light duty model. Does it have a full float rear axle? Does it have overload springs that mount above the main spring with pads on the frame?
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Here is how the OP post should of went
I have a 1990 f250 carb swaped 302 5 speed 2x4. 3.55 rearend
What could i do to increase towing capacity. I need to tow about 6000-8000lbs. Ill be towing a boat
I dont care what you say, I just want reassurance that THIS truck will do what I want it to. And if you say otherwise I will just ignore you
What could i do to increase towing capacity. I need to tow about 6000-8000lbs. Ill be towing a boat
I dont care what you say, I just want reassurance that THIS truck will do what I want it to. And if you say otherwise I will just ignore you
Posting Guru
Joined: Feb 2013
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lol funny but brad is as usual.... brutally honest
also to the OP, you basically have a glorified half ton. it also doesn't really matter as brake upgrades are needed for any increase to be considered.
also to the OP, you basically have a glorified half ton. it also doesn't really matter as brake upgrades are needed for any increase to be considered.
Postmaster
Joined: Mar 2013
Posts: 3,066
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From: Over There
Not to pile on the OP but it get's worse, now he wants to put $1600 into the 302.
https://www.ford-trucks.com/forums/1...p-end-kit.html
The engine isn't the problem, it just means he goes slower. The chassis, hitch, brakes, axle, etc. needed to carry and stop the weight is a problem.
https://www.ford-trucks.com/forums/1...p-end-kit.html
The engine isn't the problem, it just means he goes slower. The chassis, hitch, brakes, axle, etc. needed to carry and stop the weight is a problem.
Lead Driver
Joined: Feb 2013
Posts: 5,006
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From: Roseville, MN
3.55 gears, 4th gear, 55 mph= 2070 rpm, 60 mph=2258 rpm, 65 mph=2446 rpm
3.55 gears, 5th gear, 55 mph= 1656 rpm, 60 mph=1806 rpm, 65 mph=1957 rpm
4.10 gears, 4th gear, 55 mph= 2390 rpm, 60 mph=2607 rpm, 65 mph=2825 rpm
4.10 gears, 5th gear, 55 mph= 1912 rpm, 60 mph=2086 rpm, 65 mph=2260 rpm
4.56 gears, 4th gear, 55 mph= 2658 rpm, 60 mph=2900 rpm, 65 mph=3142 rpm
4.56 gears, 5th gear, 55 mph= 2127 rpm, 60 mph=2320 rpm, 65 mph=2513 rpm