1981 GMC Jimmy - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

COS399 · 02-23-2017, 11:30 PM

Quote:

Originally Posted by Hewfil1

Did you find out if it was a 6.0 of a 5.3?

Yes, it is a 5.3 block.

COS399 · 03-01-2017, 12:39 AM

This evening I removed the engine and transmission. I slipped the Tahoe transfer case from the Tahoe onto the TH350 and it fit like a glove. Next on the list is to drop the fuel tank and when it warms up I will pull it outside and pressure wash the frame in order to prep it for paint.

whitels1 · 03-25-2017, 12:42 PM

Not sure how I missed this beauty, subscribed. Get that motor swapped!!!

COS399 · 03-26-2017, 11:49 PM

I got around to dropping the fuel tank but I had to remove the receiver hitch and then the bumper first. No pictures of the Jimmy but here are a few of my "Rescue Vehicle."

The second pic is what he had to do to fix his window motor. The third is a fix for a loose mirror, which didn't work. The fourth is the wire that feeds the electric fuel pump that he added after removing and discarding the RH tank. The last is how to install a trailer plug when you don't have access to the right size drill bit.

COS399 · 03-26-2017, 11:59 PM

I question the window motor repair story because of what the other side of the door looks like.

Second pic is the home made gooseneck hitch and the last picture is a nice view of Flat Head lake.

COS399 · 01-10-2019, 02:02 AM

Sorry for not posting updates but the vehicle is running great. Here is the engine compartment.

COS399 · 01-10-2019, 02:12 AM

I put the wrong fuel pump in the tank and didn't want to drop the tank so I cut a hole above the tank, installed the correct pump, located and modified another tailgate cover to patch the floor, and now if the pump should go out its a quick fix.

COS399 · 01-10-2019, 02:19 AM

In the last couple of months I have managed to find yet another project vehicle or two.

whitels1 · 01-10-2019, 03:36 AM

That engine swap looks good, I was considering installing a late model radiator in Goldy, but the stock stuff fit my fan set up better. For me there is never enough money for 1 project but always seem to keep adding them. Keep the updates coming!

nobox351y · 01-18-2019, 12:38 PM

Why did you go with the t350 instead of the 4l60?

COS399 · 01-19-2019, 01:42 AM

Quote:

Originally Posted by nobox351y

Why did you go with the t350 instead of the 4l60?

Sorry for not giving too many details but I did install the 4L60E in it. It seems to shift okay but it doesn't stay in O/D very long. As soon as you hit a hill or get some wind fighting you then it comes out of O/D. I'm sure a gear change and some tuning would help but I'm happy with it for now. I'm working on a few other projects right now.

COS399 · 01-19-2019, 01:52 AM

Here is a pic of my cab swap project. One day I will take the time to repair the rust in the black cab and get it back on the road but that's for another day and another time.

COS399 · 03-05-2019, 11:27 PM

Happy and sad to report that I sold the Jimmy. It went to a good home and the owner is already planning to have it painted and it will only be down the road from the original owner.

Time to work on all my other projects.

03-01-2017, 12:39 AM	#27
COS399 Registered User Join Date: Dec 2013 Location: Northern, MT Posts: 569	Re: 1981 GMC Jimmy This evening I removed the engine and transmission. I slipped the Tahoe transfer case from the Tahoe onto the TH350 and it fit like a glove. Next on the list is to drop the fuel tank and when it warms up I will pull it outside and pressure wash the frame in order to prep it for paint. Attached Images __________________ 1987 GMC R2500 SC 454 T400 1988 Chevy R30 CC DRW 12 valve Cummins NV4500 GearVendors

03-25-2017, 12:42 PM	#28
whitels1 Registered User Join Date: Apr 2012 Location: Vegas Posts: 617	Re: 1981 GMC Jimmy Not sure how I missed this beauty, subscribed. Get that motor swapped!!! __________________ GoldyLS1 K20 Build My K10 Rock Crawler -Dave

03-26-2017, 11:49 PM	#29
COS399 Registered User Join Date: Dec 2013 Location: Northern, MT Posts: 569	Re: 1981 GMC Jimmy I got around to dropping the fuel tank but I had to remove the receiver hitch and then the bumper first. No pictures of the Jimmy but here are a few of my "Rescue Vehicle." The second pic is what he had to do to fix his window motor. The third is a fix for a loose mirror, which didn't work. The fourth is the wire that feeds the electric fuel pump that he added after removing and discarding the RH tank. The last is how to install a trailer plug when you don't have access to the right size drill bit. Attached Images __________________ 1987 GMC R2500 SC 454 T400 1988 Chevy R30 CC DRW 12 valve Cummins NV4500 GearVendors

03-26-2017, 11:59 PM	#30
COS399 Registered User Join Date: Dec 2013 Location: Northern, MT Posts: 569	Re: 1981 GMC Jimmy I question the window motor repair story because of what the other side of the door looks like. Second pic is the home made gooseneck hitch and the last picture is a nice view of Flat Head lake. Attached Images __________________ 1987 GMC R2500 SC 454 T400 1988 Chevy R30 CC DRW 12 valve Cummins NV4500 GearVendors

01-10-2019, 02:02 AM	#31
COS399 Registered User Join Date: Dec 2013 Location: Northern, MT Posts: 569	Re: 1981 GMC Jimmy Sorry for not posting updates but the vehicle is running great. Here is the engine compartment. Attached Images __________________ 1987 GMC R2500 SC 454 T400 1988 Chevy R30 CC DRW 12 valve Cummins NV4500 GearVendors

01-10-2019, 02:12 AM	#32
COS399 Registered User Join Date: Dec 2013 Location: Northern, MT Posts: 569	Re: 1981 GMC Jimmy I put the wrong fuel pump in the tank and didn't want to drop the tank so I cut a hole above the tank, installed the correct pump, located and modified another tailgate cover to patch the floor, and now if the pump should go out its a quick fix. Attached Images __________________ 1987 GMC R2500 SC 454 T400 1988 Chevy R30 CC DRW 12 valve Cummins NV4500 GearVendors

01-10-2019, 02:19 AM	#33
COS399 Registered User Join Date: Dec 2013 Location: Northern, MT Posts: 569	Re: 1981 GMC Jimmy In the last couple of months I have managed to find yet another project vehicle or two. Attached Images __________________ 1987 GMC R2500 SC 454 T400 1988 Chevy R30 CC DRW 12 valve Cummins NV4500 GearVendors

01-10-2019, 03:36 AM	#34
whitels1 Registered User Join Date: Apr 2012 Location: Vegas Posts: 617	Re: 1981 GMC Jimmy That engine swap looks good, I was considering installing a late model radiator in Goldy, but the stock stuff fit my fan set up better. For me there is never enough money for 1 project but always seem to keep adding them. Keep the updates coming! __________________ GoldyLS1 K20 Build My K10 Rock Crawler -Dave

01-18-2019, 12:38 PM	#35
nobox351y Registered User Join Date: May 2016 Location: LeRoy Posts: 69	Re: 1981 GMC Jimmy Why did you go with the t350 instead of the 4l60?

01-19-2019, 01:52 AM	#37
COS399 Registered User Join Date: Dec 2013 Location: Northern, MT Posts: 569	Re: 1981 GMC Jimmy Here is a pic of my cab swap project. One day I will take the time to repair the rust in the black cab and get it back on the road but that's for another day and another time. Attached Images __________________ 1987 GMC R2500 SC 454 T400 1988 Chevy R30 CC DRW 12 valve Cummins NV4500 GearVendors

03-05-2019, 11:27 PM	#38
COS399 Registered User Join Date: Dec 2013 Location: Northern, MT Posts: 569	Re: 1981 GMC Jimmy Happy and sad to report that I sold the Jimmy. It went to a good home and the owner is already planning to have it painted and it will only be down the road from the original owner. Time to work on all my other projects. __________________ 1987 GMC R2500 SC 454 T400 1988 Chevy R30 CC DRW 12 valve Cummins NV4500 GearVendors



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