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05-27-2013, 02:17 AM
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#26 |
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Registered User
Join Date: May 2013
Location: Vancouver, Canada
Posts: 36
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Finally got the Jimmy home, put the rear end on jack stands, pulled off the old split rims and tires, and pulled the rear drums off to check out pads. Posi in the rear diff, not sure the gears front and rear, whats the best way to confirm without pulling covers? more pictures attached.
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05-27-2013, 09:08 AM
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#27 |
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Registered User
Join Date: Apr 2012
Location: Henderson Nevada
Posts: 804
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
That's a nice truck congrats on your purchase! More pictures please!
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05-27-2013, 09:10 AM
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#28 |
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Registered User
Join Date: Mar 2011
Location: Havertown Pa
Posts: 392
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
The easiest way would to rotate the tire one full turn and count how many times the driveshaft rotates. Mark the driveshaft and the rim. 3 1/2 rotations = 355's, 4 1/2 = 456's.
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05-27-2013, 12:42 PM
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#29 |
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Registered User
Join Date: Jan 2011
Location: Delaware and Long Island, New York
Posts: 3,455
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Love that truck!, I'm really digging the 16's with pizza cutter meaty bones.
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05-27-2013, 12:56 PM
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#30 |
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Registered User
Join Date: Jan 2012
Location: Saint Louis
Posts: 69
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
That is amazing. Great find.
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05-27-2013, 01:37 PM
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#31 |
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Registered User
Join Date: Nov 2011
Location: Kirkland, WA
Posts: 343
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Yep, short of pulling the covers and counting teeth, raise it off the ground and mark the driveshaft and housing. Spin one revolution and count the rotation of the shaft to the rotation of the tire. Simple enough except, I did that that once and somehow got it wrong. I thought I had 2.76's and they were 3.73's when we pull the cover. I attached 2 pdf's for 72 Blazers, mostly for anyone else looking for what there K5's came with. Also added my Pickups file for C/K's. The Blazer I just finished, attached are before and after. The GMC Suburban is my next project. As you can see your Jimmy is considerably better than what I usually start with with, lol!
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05-27-2013, 03:59 PM
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#32 |
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Registered User
Join Date: Nov 2010
Location: Los Angeles, CA
Posts: 1,018
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Interior looks really nice, hey, um I know the lower left knob is a manual throttle, what is the lower right knob?
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05-27-2013, 04:03 PM
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#33 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,715
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
What rear axle is it? If the axles match the front Dana 44 should have a ratio tag on cover bolts. Same true for rear if its a 60, but not if it's the Eaton. I'd pull covers and change fluids because it has sat so long. Then you will know what ratio and what type traction device. It has an aftermarket truss on the front. Any other add ons youve found?
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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05-27-2013, 08:14 PM
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#34 | |
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Registered User
Join Date: Sep 2011
Location: Leland, Il
Posts: 1,503
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Quote:
Posted via Mobile Device |
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05-27-2013, 09:09 PM
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#35 |
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Registered User
Join Date: Nov 2004
Location: Nebraska
Posts: 762
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Great looking jimmy, even lucked out with a single wall top. I really like the look of the wheels and tires with it, I would clean it and keep it as is.
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05-28-2013, 01:39 PM
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#36 |
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Registered User
Join Date: Feb 2003
Location: Santa Ana, CA
Posts: 2,191
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
A 72 wouldn't have a manual choke.
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05-29-2013, 09:32 PM
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#37 |
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Registered User
Join Date: May 2013
Location: Vancouver, Canada
Posts: 36
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Thanks for all the responses and questions. I will post some more pictures later tonight. Heading over to my shop to work on the Jimmy. Wish I had more time, working 70hrs a week, need more time to work on the toy/Jimmy. The rims that were on the truck when I bought it were split rims, and bald bias ply tires. Bought a set of new Goodyear Wrangler HT load rating E, with 16" x 7" steel factory rims, excellent shape near new, $500 Gonna run the factory GMC stainless steel deep dog dish factory 3/4 ton hub caps all around, looking for a set of 4. Will have to hog out the centre for the from hubs. I will confirm what the 3rd and 4th switches are for on the bezel. Will check the gear ratio on the diffs also, going to definitely change all the fluid everywhere. I ordered a new steel gas tank, sending unit, and comes with new straps, be here in a week. Got a call into the original owners son to talk about when his father changed the running gear around and why. Thanks everyone Ray.
If anyone knows were I can get a set of the GMC dog dish factory hub cap, please let me know. Posted via Mobile Device |
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05-29-2013, 11:35 PM
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#38 | |
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Registered User
Join Date: Nov 2010
Location: Los Angeles, CA
Posts: 1,018
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Quote:
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05-30-2013, 03:21 AM
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#39 |
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Registered User
Join Date: May 2013
Location: Vancouver, Canada
Posts: 36
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
attached are some pictures of the rims and tires I just picked up.
I went with a load rating E because I have 3 trailers and will more that likely use the Jimmy once in a while. I will be changing the 3/4 ton running gear back to the original 1/2 ton 6 bolt later down the road. I marked the drive shafts and tire and came up with 4:56 ratio. |
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05-30-2013, 03:24 AM
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#40 |
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Registered User
Join Date: May 2013
Location: Vancouver, Canada
Posts: 36
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
rear seat picture attached. confirmed the motor is original also.
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05-30-2013, 05:45 AM
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#41 |
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Registered User
Join Date: Mar 2004
Location: Vale, NC
Posts: 283
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Super find! I would say by the condition of the interior it only has 13k miles of wear on it. Really nice interior.
__________________
1972 Custom 10 Deluxe- original paint, interior- 72k miles http://www.cardomain.com/ride/2466316 Cheap, Fast or Good. Pick any two. 1990 Eagle Talon AWD 1991.5 W250 CTD 1992 Cushman Truckster- Haulster |
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05-30-2013, 05:56 AM
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#42 |
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Registered User
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,456
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Gotta agree with Dave, streering wheel, drivers seat, and pedals all have minimal wear. Did it have any service records with it...
Looks like a surviver to me. Those 1/2 ton rears are all over the place on the east coast, people want 3/4 ton rears with 4.56 gears for 35" tires
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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05-30-2013, 06:40 AM
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#43 |
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Registered User
 
Join Date: Apr 2010
Location: West Chester Pa
Posts: 965
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Yes we do Jim . I have a set I could trade Him (lol) Nice Jimmy have fun
__________________
!972 K5 Blazer,Highlander,A/C a twin to the one I Had 1972 K/5 Blazer  CST Highlander 15YR project2003 Silverado Crew 2500HD (Daily driver) 1997 Ford focus (Beater) 2003 ford Taurus (student) 2014 Ford Fusion HYB (wife) 2003 Jetta ( Student) |
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05-30-2013, 10:37 AM
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#44 | |
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Registered User
Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,456
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Quote:
 theyre like dandilions, they pop up everywhere. That set in delaware(free), john has a set(free) all posi 3:73s. Id luv to have something with 4:56s in it, then i could get rid of my 33s and get a set of 35s with a 6" lift
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Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 05-30-2013 at 11:00 AM. |
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05-30-2013, 08:41 PM
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#45 |
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Registered User
Join Date: May 2013
Location: Vancouver, Canada
Posts: 36
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Found a bulge in one of the tires, gonna return them and look for some 33 or 35's. Would like to use it with the 3/4 ton diffs till end of summer and pull off the road to do 1/2 ton conversion, you never know might work the way it is. Just would like to see it all put back to stock original condition.
Posted via Mobile Device |
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06-04-2013, 07:23 PM
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#46 |
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Registered User
Join Date: May 2013
Location: Bay Area Ca
Posts: 20
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Are you gonna restore it, or preserve and maintain this sweet survivor? I just recently picked myself up a 72 Jimmy, not as original as yours, but Jimmys i heard were a lot more rare than the K5.
You came across a diamond in the ruff. Nice truck |
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06-04-2013, 09:06 PM
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#47 |
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Registered User
Join Date: May 2013
Location: Vancouver, Canada
Posts: 36
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
My plan is to bring it back to original, just want to use it for the summer. The original owner did all the service work, never let anyone work on it.
Posted via Mobile Device |
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06-09-2013, 08:27 PM
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#48 |
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Registered User
Join Date: Jun 2004
Location: Beeville, Texas
Posts: 1,943
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
That's one cool ride!
__________________
RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck |
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06-10-2013, 12:00 AM
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#49 |
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Post Whore
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,683
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Very cool! Enjoy it!
__________________
1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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04-23-2014, 01:31 AM
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#50 |
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Registered User
Join Date: May 2013
Location: Vancouver, Canada
Posts: 36
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Re: 1972 GMC Jimmy 4x4 13,100 orig miles
Man can believe it's been close to a year since I posted pictures and info about my 1972 Jimmy. Runs great, put a rebuild, date coded quadra-jet back on it, factory air cleaner, replaced points, condensor, cap, wires and plugs. new battery and gas tank. Passed our local air car station with really low numbers. Gonna put 3 or six months insurance on it, and just drive it, get all the bugs out of it. Picked up a hood and cowl with exact colour, in great shape from a friend in the interior for $100. Bought a rechromed grill, 2 mint eyebrow chrome pieces, 2 stainless mirror, that match original, and 2 more factory dog dish hubcaps for $400. Can't wait to get all the parts switched over and pop the hard top off for summer. I attached some more pictures of me cleaning the rear interior floor and mats, the floor is mint, never seen one so clean, under the original mats. Great to be back.
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