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Old 05-31-2010, 01:46 PM   #1
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1970 CJ-5 Newbie Question(s)

I just purchased a 1970 CJ-5, my first jeep. The seller tells me that it will need tires. I think wheels/rims are stock.

I have not taken delivery of it yet but would like to start pricing both wheels and tires.
I have looked online and can not find any original manufacturer’s info on this year model.

Can someone tell me, what size tire I should be look for, if I keep the stock wheels?
(What was the size and backspacing on the original rims?)

Also can someone tell me what size the bolt pattern is on this year model? I know it is a 5 lug but is it a standard 5x5.5”

These are the specs I have on the jeep I have bought:
Buick Dauntless 225 V6
Warn Overdrive
Saginaw Power Steering
GM HEI electronic Ignition
LED Tail Light
LED Reverse Lights
Dana 44 Rear Axle
Dana 30 Front Axle

Also is there some place on the web I can locate the original specs for this year model (like manufacturer’s specs/sales brochure)?

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Old 05-31-2010, 03:20 PM   #2
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Congrats on the new ride. Those early CJs are just about the coolest vehicles ever designed. Miserable as cars, but awesome fun!

5 on 5.5" is correct for all CJs. And they'er all 15" wheels. 4" backspacing is stock (I think - wait for some of the other people to confirm that). Stock on a 1970 is most likely a 7 inch wide wheel.

The springs are most likely sagging a bit by this point, so tire size gets a little complicated. 31" tires should fit any stock CJ, though.

A suggestion would be small cheap tires for now, and use those while you make any plans for lift. My guess would be you're going to want new springs and 33" tires fairly soon (most people do!).

And check out the firing order of your engine - if the sticker is missing, look it up. They don't use the normal order, and more than one new owner has changed plugs and messed things up!

I had that engine in a 1970 Jeepster Commando. Wish I still had the car!

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Old 06-01-2010, 08:20 AM   #3
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Quote:
Originally Posted by Geoff@Bestop View Post
...And check out the firing order of your engine - if the sticker is missing, look it up. They don't use the normal order, and more than one new owner has changed plugs and messed things up!...
The Dauntless motors have the firing order stamped into one of the valve covers.
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Old 06-01-2010, 08:49 AM   #4
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Welcome to the group..... You do know that pix are REQUIRED of this classic when she comes home.
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Old 06-01-2010, 08:58 AM   #5
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I had an 80 CJ-5 and I put 31 X 10.50's on stock wheels. Are they the stock chromes? If so.. make sure you don't get beat out of them.. they are not cheap, especially if they have center caps that are also stock.

Pics, pics, pics...
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Old 06-03-2010, 10:23 AM   #6
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My first Jeep was a '75 CJ-5. I still miss that Jeep!! Enjoy yours and definitely get some pics posted!! And welcome to our little piece of heaven......
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Old 06-03-2010, 07:35 PM   #7
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If you are looking for restore facts/info...check out this group. I am also a member of Early CJ5.com > Forums - Powered by vBulletin

A site just for cj 5, m38a1...Helpful for specifics on the 5's...hope I didn't step on any toes here...just tryin' to give some more help out there....
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Old 06-08-2010, 07:18 PM   #8
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[QUOTE=Geoff@Bestop;639727]5 on 5.5" is correct for all CJs. And they'er all 15" wheels. 4" backspacing is stock (I think - wait for some of the other people to confirm that). Stock on a 1970 is most likely a 7 inch wide wheel.
QUOTE]

Unfortunately they turned out to be 31x10.50R15 LT M/S. Not usre if I like the big fat tire look, really prefer the tin military mud tire look!

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