94 f150 -- towing with an inline 300 - JeepForum.com
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post #1 of 12 Old 04-03-2012, 08:09 PM Thread Starter
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94 f150 -- towing with an inline 300

I recently purchased a 94 f150 (long bed) for a tow rig and farm truck. It's 2wd, with the 300 inline 6 and a 5 sp. the plan was to use it to pull a 18' deck over tandem car trailer, with my 98 ZJ loaded for trail debauchery.

I pulled the ZJ about 200 interstate miles this weekend, on a tow dolly. The truck performed flawlessly, better than I had hoped for. However, the 300 seems to be lacking the horsepower to effectively deal with hills at 60 mph.

According to the dealer, my truck has a 3.07 rear gearset. With this in mind, my mod list has changed priority, from headers and possibly cam, to a rear with at least 3.73 gears.

Does this sound like a good idea? And can anyone help me to know what to look for in the local junkyards? (or, is my local dealer wrong again? 3.07 seems awfully tall for a 6 cyl, 5 sp 1/2 ton truck....)

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Originally Posted by 4.0H.O.XJ
Ill have an XJ please, with a side order of 4.0, hold the catalyctic converter and the 02 sensors, thank you.
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post #2 of 12 Old 04-04-2012, 06:47 AM
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Ford 300 I6 have a lot of torque. Probably a good idea to go to the 3.73 gears. I think you will see an improvement. Assumptive that you are running the factory size tires. And depending on the size of the hills you may still find it lacking but still workable. I dont remember when that engine was changed to Fuel Injection, but if it only has a carb, you may want to consider FI to see both improvement and economy.
Good Luck.
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post #3 of 12 Old 04-04-2012, 08:19 AM
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94 was fuel injected
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post #4 of 12 Old 04-04-2012, 07:12 PM
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I had that year and motor in an F250 and I am sure it was 4:11 or lower. Towed great.

03 Rubicon; 99 xj with too much stuff to list; Unimog 406 (gone)
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post #5 of 12 Old 04-04-2012, 08:01 PM
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Very torquey engine - it will out tow a 302.

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post #6 of 12 Old 04-12-2012, 06:42 PM
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I had a 94 f150 with a 302. It had 3.55 gears. There is a code on the inside of the drivers side door that denotes the gear ratio.

One other note about that truck is that the manual transmission that went into them was rated at 3,500 lbs towing while the automatic was rated at 7,000 lbs.

I towed my jeep with my truck once and the truck did not handle it well.
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post #7 of 12 Old 04-14-2012, 10:15 PM
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The 300 will pull about anything just won't pull it fast.

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post #8 of 12 Old 08-12-2012, 05:41 PM
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3.07 sound right I had a 1992 f150 300i6 with the Mazda 5 speed. 4x4. And it towed great. I pulled a 26 ft gooseneck with two Willys flat fenders better then the guy who owned the jeeps and trailers 1992 f150 with a 351 and an auto could. By far. He had 3.55 gears. Both of us had airbags. I had 234xxx miles on it. Never should have let it go. Best truck I've ever owned!
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post #9 of 12 Old 08-13-2012, 09:03 AM
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I've had a bunch of F150's, and they were all almost 3.55's. I'm guessing it's got the regular suspension and not the heavy duty package?
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post #10 of 12 Old 08-13-2012, 02:05 PM
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Originally Posted by wilson1010 View Post
I had that year and motor in an F250 and I am sure it was 4:11 or lower. Towed great.
Same here. Year, motor and diff and it was a great tow rig.

My suggestion to the OP, just keep it in 4th gear on the highway. You will end up in about the same place as re-gearinng.

03 Rubicon; 99 xj with too much stuff to list; Unimog 406 (gone)
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post #11 of 12 Old 04-21-2016, 10:39 PM
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When towing and the engine bogs, like when you are going up a hill, down shift so you get more power and torque out of it, my 93 I6 5 spd pulled 9,000lbs of round bales on my bumper up and down hills like nothing and i wasnt pulling in overdrive (5th gear) i pull in 4th for more power.
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post #12 of 12 Old 04-24-2016, 10:58 AM
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3.07's are too tall.
While you can keep it in 4th while pulling, a gear swap will accomplish more.
It will close the shift gaps up. This will allow you to keep the RPM's up on the upshift, which will help keep the engine in the sweet spot.
It will lower your first gear, greatly aiding in take off.
It will take some strain off the drivetrain, especially in the lower gears under acceleration.

3.50's would be a good choice and you should be able to find a solid used axle in a u pick yard for under 200 bucks. The beauty is if you don't like it, you can swap the stock axle back in a couple of hours.

My daughter has a 91 Bronco with the 300 in it and it doesn't have the spunk I would like either. While we know it is probably close to the 300k mark, it still doesn't burn oil or do anything bad. Since there is no cruise or other computer operated accessories, we have been floating the idea of converting to a small 4BBL.

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