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 33's on an 85 Pick-up
#968235
10/16/09 05:54 AM
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Joined: Oct 2004
Posts: 15
OP
Need a Spot
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I have a pretty much virgin 85 pickup long bed with straight axel front. I'm thinking of running 33X10.50 BF MT's. Can anyone tell me how much lift I need to clear? I was thinking of a 15x8 rim with 3.75 back space, I think 4" is standard.
I don't want to go higher than needed so it's still good for the roadway. I plan to use it as a tow vehicle for the motorhome, but want to have enough clearence not to be turned around when encountering deep ruts etc.
Thanks for any experiences you can pass on.
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Re: 33's on an 85 Pick-up
[Re: mcpree]
#968236
10/16/09 06:08 AM
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Joined: Oct 2002
Posts: 15,887
Toyota & Classifieds Moderator
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Regear that thing so it'll still have some guts if you're going to use it for a lot of driving.
I'm jealous; I've wanted a long bed fer years. I've got 2" lifts on a couple of my trucks and 31x10.50's with still a lot of room, with no backspacing. If towing you might want some tho'.
That backspacing sounds about right- others will chime in.
http://www.walkablecommunities.org/Democracy is two wolves and a lamb voting on what to have for dinner. Liberty is a well-armed lamb contesting the vote. **ubi apis- ibi salus**
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Re: 33's on an 85 Pick-up
[Re: kewlynx]
#968237
10/16/09 06:28 AM
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Joined: Oct 2004
Posts: 15
OP
Need a Spot
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Thanks Kewlynx,
I plan the gear change and locker for the future, but first tires and suspension. It would be great if I could get away with just 2", ARB springs from 4 wheel parts are afordable and no shipping if picked up at the store (current budgetary constraints). But I think I may need at least 3".
I also have a 93 with 31X10.50'S with ARB old man rear springs which turned out to be just about right for the everyday ride.
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Re: 33's on an 85 Pick-up
[Re: 4Crawler]
#968239
10/16/09 04:31 PM
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Joined: Oct 2004
Posts: 15
OP
Need a Spot
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Thanks 4Crawler,
I kind of thought I would need 3" at least. Are the tires on your truck 33x12.50? I was thinking of using the 33x10.50 to give me a bit more room. What do you think about 3" springs and 1" body lift?
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Re: 33's on an 85 Pick-up
[Re: mcpree]
#968240
10/16/09 05:20 PM
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Joined: Jan 2000
Posts: 12,153
Web Wheeler
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As noted on the web page, those are 33x9.50s on stock 6" rims. Also noted I ultimately ended up adding a 1" body lift and 1" longer spring shackles up front to clear those tires.
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Re: 33's on an 85 Pick-up
[Re: 4Crawler]
#968241
10/17/09 12:16 AM
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Joined: Jan 2002
Posts: 1,617
Body Damage is Cool
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Instead of all the trouble of lift springs and body lifts, could he get away with axle relocating plates on the leaf spring. I think most plates move the axle 1" forward. Some outfit called 4crawler.com sells them. Check out Rocky Road Outfitters too if you are looking for ARB/Old Man Emu leaf springs. In the past I noticed that they have pretty reasonable prices. Last time I called there the phone was answered by a real 4x4 nut instead of some corporate cubicle/telephone jockey. -- Matt
'89 4runner SR5, 3.0, auto (fun)
'93 xtra cab, dlx,3.0, 5spd (work truck)
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Re: 33's on an 85 Pick-up
[Re: mcpree]
#968242
10/17/09 12:35 AM
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Joined: Apr 2000
Posts: 4,230
Roll Me Over
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Just a note;
If you will be flat towing it, do not forget to disconnect the rear D-shaft or get a rear D-shaft disconnect.
David Fritzsche
1990 Ex-Cab V-6,5-speed, with a few mods
04.5 CTD Dodge 2500 Ram--Tow Rig
Roseville, CA
"Serenity through Sobriety"
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Re: 33's on an 85 Pick-up
[Re: OOP'S]
#968243
10/19/09 04:45 AM
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Joined: Oct 2004
Posts: 15
OP
Need a Spot
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Thanks everyone,
4Crawler, I did check out your link (although after I sent my post), very impressive you did alot of analysis. It answered alot of my questions.
It gave me a bunch to think about. Anyway the trucks on non-op so there's no hurry.
Oop's stated that I might need a D-Shaft disconnect to tow. Both of the manuels for my 93 and 85 state that they should be towed in 2wd hi with the trans in in netural. It does'nt give a limit of 50 mi or anything.
Does anyone know if drive train damage can occur if I don't disconnect the rear?
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Re: 33's on an 85 Pick-up
[Re: mcpree]
#968244
10/19/09 04:35 PM
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Joined: Jan 2000
Posts: 12,153
Web Wheeler
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May be OK in N/2H, but safest to pull the 4 bolts at the rear axle and hang the driveshaft up. Why? Flat Towing a Toyota <-- Must disconnect rear driveline!
Quote:
Originally Posted by Marlin Crawler
On all auto chain driven and manual gear driven t/cases, if it is towed in two wheel drive, the output shaft will turn, but there will be no way for the oil at the bottom of the case to get to the top where the output shaft is. On the chain driven cases, the input shaft turns the planetary housing which drives the oil pump. Gear driven cases use the input gear and low range gears to throw oil on the inside of the housing that collects the oil via gutters and directs it to the rear of the case by gravity. Both style of cases, must have the input shaft spinning to lube the output shaft, speedo gears, and rear seal of the t/case. The rear driveshaft must be removed.
Marlin I kind of look at it this way, with the driveshaft disconnected, it is 100% safe, with it connected there is a chance of problems. Many folks do it w/o issue, but some have trouble. There are a number of threads on the Pirate4x4 forum (where the above quote was found), recounting flat towing problems with the driveshaft connected.
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![[Linked Image]](http://www.4crawler.com/4x4/Images/wheel_rub.jpg)
