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O/T Question for the Ford fanatics, F-150

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Steve Crum

08-24-2007 20:14:45

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I have 2 F-150 trucks. 1 Is an 89' extended cab with an 8' box. This has the 302 FI and 5 spd stick shift. This has type 19 axles according to the door sticker. and seems geared to what I think a truck of this caliber should be.
The other truck is a 92' regular cab short box with the 300 FI straight 6 and 5 speed stick. This has the type 17 axles according to the door sticker. This truck in my opinion is geared too high for anything but highway cruising. More a playboy truck (son drives it now)
My question is what is the differances in these axle types? Obviously the type 17 is higher geared, Is one or both limited slip? I got a dumb look from the kid at the parts counter at Croft Ford when I asked. Dumb looks are still free incidently.

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Vern-MI

08-25-2007 05:06:22

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Re: O/T Question for the Ford fanatics, F-150 in reply to Steve Crum, 08-24-2007 20:14:45

Try the Ford Forum below for additional info.

Ford axles

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MarkB_MI

08-25-2007 04:02:37

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Re: O/T Question for the Ford fanatics, F-150 in reply to Steve Crum, 08-24-2007 20:14:45

I don't know anything about the different Ford axle types, but I'm pretty sure you can change the ring & pinion to get a lower (higher numerical) ratio. And if you don't have limited slip, that can be changed out at the same time. (In fact, it's easier if you do because you don't have to remove the ring gear from the differential carrier.)

In general, different axle types are used for different axle loads, not so much for different ratios.

A good source for rear end parts is Drive Train Specialists. I've purchased from their brick and mortar store, but not from their online store.

Drive Train Specialists

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georgeky

08-24-2007 21:12:57

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Re: O/T Question for the Ford fanatics, F-150 in reply to Steve Crum, 08-24-2007 20:14:45

The trouble with these is that the 5 speeds are car transmissions with overdrive. Put you a good 4 speed bulldog tranny with that 300 and it will make a world of difference. I don't know why they quit putting these in trucks to start with.

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KIP in MX

08-25-2007 12:56:00

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Re: O/T Question for the Ford fanatics, F-150 in reply to georgeky, 08-24-2007 21:12:57

I had to order my 89 F-150 4X4(300 6 cyl)just to get the Borg Warner T-18 4 speed. All the ones with manual xmsn on the lots at the time were the Mazda aluminum 5 speed with no granny 1st gear. My axles are 3:08, but most time it�s on the road. Don�t know the axle code because pickup is in Missouri and I�m about 2000 miles south of there. My 1965 F-100 had factory 300 6 cyl, T-98 4 speed and Dana 60 with 4:10 Posi Traction. Sure wished I still had that one!

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Don-Wi

08-24-2007 22:57:40

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Re: O/T Question for the Ford fanatics, F-150 in reply to georgeky, 08-24-2007 21:12:57

That Mazda tranny in my truck has held up just fine. I've got an 88 F150 2wd long box, 300 w/the 5 sp. mazda O/D transmision. It still has it's original clutch with close to 190,000 miles (actual unknown, the speedo was out for about 3 years) and it pulls everything on our farm, and has since 92, except the tractors and loaded chopper boxes.

I pull 2 loads of hay in tendem once in a while, 7-8 ton loads of hay from the auction block, etc. That tranny is a great one as ar as I'm concerned.

Donovan from Wisconsin

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georgeky

08-25-2007 07:05:46

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Re: O/T Question for the Ford fanatics, F-150 in reply to Don-Wi, 08-24-2007 22:57:40

I have an 85 F-150 with a 300 and 4 speed, also have 89 F-150(302) and a 90 F-150(302) and there is no comparison between them with 5 speeds. The 85 4 speed gets better milage,pulls better, is juat better all the way around. I haven't had any trouble out of the 5 speeds they just aren't as good as the 4. All farm trucks should have bulldog in them.

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Don-Wi

08-25-2007 09:13:49

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Re: O/T Question for the Ford fanatics, F-150 in reply to georgeky, 08-25-2007 07:05:46

I've always gotten pretty good mileage with my truck too. Highway going about 65-75 the whole time hauling 40 BU. oats in the bed and another 40 in the trailer behind me, I got about 18 round trip. It was a good 250-300 miles total.

Donovan from Wisconsin

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Jonfarmer

08-24-2007 20:48:58

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Re: O/T Question for the Ford fanatics, F-150 in reply to Steve Crum, 08-24-2007 20:14:45

I don't know what those axle type numbers mean, but its pretty easy to check to see if its a limited slip without jacking it up, just peel out with it, if it lays crosswalks, its a limited slip, if its just a one wheel peel, then its an open differantial. I had an '89 F150 reg cab, long bed, with a 300 six, 4 spd stick, 4x4, and 4:10 gears. It was only limited slip while turning left, must have been time for a rebuild. Don't worry, your not going to do anything to that truck by peeling out a few times with it, but if you want, you could find a dirt road to try it out on, then you wouldn't even hurt the tires. You can put in any set of gears you want if you were willing to change them, same as they sell kits to replace your old limited slip.

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Steve Crum

08-24-2007 21:03:38

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Re: O/T Question for the Ford fanatics, F-150 in reply to Jonfarmer, 08-24-2007 20:48:58

My main curiosity here is in case I need to change the axle assembly in the 89'. It is a 4x4 and has over 200,000 miles on it. I'm going to pull the back cover before the snow flys and change this over to Lucus gear lube. Changed the transmission over to Lucas ATF and gear lube stabilizer on advice from the engineers at Lucas and this cuss shifts better than it ever did, quiet now also.

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flashback

08-25-2007 08:26:23

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Re: O/T Question for the Ford fanatics, F-150 in reply to Steve Crum, 08-24-2007 21:03:38

As for Lucas additives , I use them in all my vehicles now. Mechanics around these parts swear by Lucas products.

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RobMD

08-24-2007 20:32:01

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Re: O/T Question for the Ford fanatics, F-150 in reply to Steve Crum, 08-24-2007 20:14:45

I had a 1989 F-150 with the 300 and 5 speed stick. I could go 65 in only 4th gear at 2250 rpms. About burned the clutch trying to get going in 1st gear. Geared exactly for what you said, highway cruising.

According to my information and a tear down of the rear end in this truck, I had 3.08 gears which is VERY VERY high for a truck. No limited slip. These gears gave the straight-six a fuel mileage of 19 mpg. GREAT highway hauler.

As for your other F-150, you more than likely have the 3.73 rear end. Highly doubtful that EITHER of them are limited slip. Try it! Jack up the rear axle and put the truck in gear. If one wheel goes backwards when you turn one wheel, you don't have a limited slip. If you can't really turn the wheel, you DO have a limited slip.

Finally, let me tell you that limited slips are virtually pieces of schitt in a differential. After 20,000 miles, the limited slip is merely bubble gum holding the axles together.

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RobMD

08-24-2007 20:33:21

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Re: O/T Question for the Ford fanatics, F-150 in reply to RobMD, 08-24-2007 20:32:01

as for your type 19, i meant 3.55's NOT 3.73's.

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Gary in Mozarks

08-24-2007 20:24:21

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Re: O/T Question for the Ford fanatics, F-150 in reply to Steve Crum, 08-24-2007 20:14:45

Type 19 is a .55 non limited slip.

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Gary in Mozarks

08-24-2007 20:36:48

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Re: O/T Question for the Ford fanatics, F-150 in reply to Gary in Mozarks, 08-24-2007 20:24:21

Opps 3.55 I couldn;t find a type 17 listed but I would hazard a guess that it is 3.2? non limited slip. With the push for better mileage, the easiest solution is to put a higher gear in it. Nobody seriously pulls anything with a 6 cylinder, short box 150 so its just a oversize wagon. Most of the limited slips seem to have a letter in front of the number like A27 etc. hope this helps

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Steve Crum

08-24-2007 20:56:15

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Re: O/T Question for the Ford fanatics, F-150 in reply to Gary in Mozarks, 08-24-2007 20:36:48

Thanks for the help guys,
Now that you mention having trouble finding a type 17. This could be a type 18 axle. Getting tired and the truck is not here right now. At 60 MPH the 89's tach reads 2,000 RPM in 5th gear. The 92's tach reads 1,500 at 60 MPH in 5th gear.
Made a road trip to Erie Pa last Sunday 450 mile round trip on I-86 with the 92' and dragged a 2,400 pound trailer mounted Hobart welder / generator home. All highway at an average of 70 MPH except for about 20 miles. Burn't 80 bucks worth of Gas. That 92' has a tiny gas tank too.

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