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#1 |
Registered User
Join Date: Apr 2007
Location: Regina, Sask., Canada
Posts: 14
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1970 Jimmy 2WD, need advice!
I recently purchased a 1970 Jimmy, I have been looking for quite some time. Here is my problem or blessing. I thought i was buying a 4WD Jimmy, and well it turns out it's a sheep in wolf clothes, lol. The VIN tells me it's a 2WD and further investigation leads me to believe that I do have the original tub and frame. The front leaf mounts are bolted in where factory rivets usually exist. I know these are rare, any clarification of actual numbers would be awesome. I'm looking for input on how to proceed with this project. I'm thinking that i need to return it to it's 2WD origin, and continue my search for an actual 4WD. Thanks!!
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#2 |
Senior Member
![]() Join Date: Jan 2002
Location: Williston, ND
Posts: 2,999
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Re: 1970 Jimmy 2WD, need advice!
Sadly there is no production numbers for GMCs. It would obviously be low production tho. I think the rule of thumb is 1 GMC to 6 Chevys. It's not perfect but should give an "idea". I agree to return it to 2wd form
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68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi |
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#3 |
Registered User
Join Date: Apr 2007
Location: Regina, Sask., Canada
Posts: 14
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Re: 1970 Jimmy 2WD, need advice!
Thanks 1/6 of 985 is awful low, I had seen 1/3 on this forum, too. Thanks!! Would you try and stay close to original? I have bits and pieces around, like a 69 casting date 350/th350 combo and a 5 bolt disc brake cross member from 1971.
Last edited by yim94; 12-12-2015 at 06:56 PM. |
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#4 |
Stalker Nate
Join Date: Dec 2010
Location: Langley, BC, Canada
Posts: 1,556
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Re: 1970 Jimmy 2WD, need advice!
Best to swap in a '72 IFS cross member with disc brakes & go back to 2wd. Don't waste a 2wd vin on a 4wd project of course. As far as all original, too late now but a 2wd project is worth more than a 4wd either way.
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1957 GMC SWB stepper modified summer time driver 1963 Chevy Fire Dept. Command Center Van 2 ton - future food vending truck project 1965 Chevy P10 Ice Cream Truck project Instagram - TheDonutDiner FaceBook - @UscreamIscream |
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#5 |
Registered User
Join Date: Apr 2007
Location: Regina, Sask., Canada
Posts: 14
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Re: 1970 Jimmy 2WD, need advice!
Thanks for the advice. What I meant to say was period correct not original. Or should i go more for a modern drivetrain(i.e. fuel injection/overdrive)?
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#6 |
Registered User
Join Date: Apr 2008
Location: Md
Posts: 2,475
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Re: 1970 Jimmy 2WD, need advice!
Nice find, What you do with it and how and what you drive may influence the build plans. I modified a 4wd to 2wd, Lots of changes involved. front cross member, Transmission, transfer case, drive shaft. Post some photos, drive train etc when you get a chance.
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http://67-72chevytrucks.com/vboard/s...d.php?t=635605 |
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#7 |
Registered User
Join Date: Mar 2015
Location: Ontario Canada
Posts: 1,514
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Re: 1970 Jimmy 2WD, need advice!
That's up to you, but I prefer late model drivetrains. If you do decide to upgrade the engine and transmission, do it in such a way that it could be reversed if needed. Don't cut or alter the body IMHO.
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#8 | |
Registered User
Join Date: Apr 2007
Location: Regina, Sask., Canada
Posts: 14
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Re: 1970 Jimmy 2WD, need advice!
Quote:
Sweet build thread, btw!! Last edited by yim94; 12-14-2015 at 02:16 PM. |
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#9 |
Registered User
Join Date: Apr 2007
Location: Regina, Sask., Canada
Posts: 14
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Re: 1970 Jimmy 2WD, need advice!
Good advice. I think I should leave the body alone too. Probably a 5.3/4l60e or something along that lines. Improve reliability.
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#10 |
Registered User
Join Date: Apr 2008
Location: Md
Posts: 2,475
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Re: 1970 Jimmy 2WD, need advice!
Thanks for the Compliment....I agree also, 5.3 and a 4l60E or better!... having gone with a crate 350 it's OK but not great!
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http://67-72chevytrucks.com/vboard/s...d.php?t=635605 |
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