The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1969 - 1972 Blazers and Jimmys Message Board > 1969 - 1972 Blazers and Jimmys Projects and Builds

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 03-16-2015, 11:55 PM   #1
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
1972 Jimmy + 5.3/4L60E/NP205

Well I guess the time is now. The plan is to do a 5.3/4L60E and mate the stock t-case to it. I have an 04 pullout with only 55k that a buddy of mine ran into recently. Ran a carfax on the truck it came out of and all seems legitimate. Picking up the engine, tranny, harness, ECM this week.

Started an early morning tear down last weekend with my lil bro... Cheers and most importantly thanks for all the info gathered here and ls1nova71 for already answering numerous questions that I have thrown his way!!
Attached Images
  
__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 03-17-2015, 12:19 AM   #2
Ridnhi
Senior Member
 
Ridnhi's Avatar
 
Join Date: Nov 2010
Location: Marion, IL
Posts: 721
Re: 1972 Jimmy + 5.3/4L60E/NP205

In for this, would love to do same to mine. Nice rig!
__________________
1972 K5 Auto 4x4 factory air
2007 Silverado extended cab Z71
Ridnhi is offline   Reply With Quote
Old 03-17-2015, 12:22 AM   #3
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
Re: 1972 Jimmy + 5.3/4L60E/NP205















__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 03-18-2015, 03:56 PM   #4
Justin@EntropyRad
Registered User
 
Justin@EntropyRad's Avatar
 
Join Date: Jan 2015
Location: Charlotte, NC
Posts: 485
Re: 1972 Jimmy + 5.3/4L60E/NP205

looks like a beast!
Justin@EntropyRad is offline   Reply With Quote
Old 03-18-2015, 08:24 PM   #5
chesafreak
Registered User
 
Join Date: Feb 2012
Location: Chesapeake
Posts: 3
Re: 1972 Jimmy + 5.3/4L60E/NP205

Excited to see this one. If you take that many pics of just the tear down would like to see how many we get with the actual detail of the build. ha Keep them coming..
chesafreak is offline   Reply With Quote
Old 03-18-2015, 10:53 PM   #6
ls1nova71
Senior Member
 
ls1nova71's Avatar
 
Join Date: Dec 2009
Location: Independence Mo
Posts: 2,867
Re: 1972 Jimmy + 5.3/4L60E/NP205

Well, I guess there's no going back now! I'll be watching, and if there's anything I can do to help, just ask.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10 (avatar truck)
http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 03-22-2015, 01:14 AM   #7
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
Re: 1972 Jimmy + 5.3/4L60E/NP205

Quote:
Originally Posted by ls1nova71 View Post
Well, I guess there's no going back now! I'll be watching, and if there's anything I can do to help, just ask.
You'll be sick of me by the time I'm done!



Update: got the engine/tranny and all the goodies Friday. Popped the valve covers and everything looks sweeeet and pretty in there! Pics coming.
__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 03-22-2015, 09:54 PM   #8
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
Re: 1972 Jimmy + 5.3/4L60E/NP205

Got the engine/tranny and the good stuff picked up Friday...
Tore her down and got some paint on her today with the help from my lil girlie...

























__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 03-24-2015, 11:36 AM   #9
Justin@EntropyRad
Registered User
 
Justin@EntropyRad's Avatar
 
Join Date: Jan 2015
Location: Charlotte, NC
Posts: 485
Re: 1972 Jimmy + 5.3/4L60E/NP205

Motor looks nice and clean inside!
__________________
* Call me NOT the website number*
Justin Novick
(773) 303-8251
Sales/Support
Entropy Radiator / Engineered Cooling Products
"The Sexiest Radiators For The Sexiest Hot Rods" - www.EntropyRad.com www.speedcooling.com
Justin@EntropyRad is offline   Reply With Quote
Old 04-07-2015, 10:26 PM   #10
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
Re: 1972 Jimmy + 5.3/4L60E/NP205

Few things trickling in over the last week...
Ordered the DD gauges with the ECM interface.
Ordered the PacFab crossmember
Ordered the AA kit with all the parts. - FYI - I ordered this from Summit Racing and it was about $100 cheaper than AA. Plus free shipping. It was all in stock and was here in 2 days.









__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 05-13-2015, 03:37 AM   #11
ls1nova71
Senior Member
 
ls1nova71's Avatar
 
Join Date: Dec 2009
Location: Independence Mo
Posts: 2,867
Re: 1972 Jimmy + 5.3/4L60E/NP205

Are you ever going to update this build theead? I know youve got some things done.......
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html

5.3 swap into my RUSTY '71 C10 (avatar truck)
http://ls1tech.com/forums/conversion...71-c-10-a.html
ls1nova71 is offline   Reply With Quote
Old 05-13-2015, 08:36 AM   #12
hemi43
Registered User
 
hemi43's Avatar
 
Join Date: Mar 2015
Location: Newcastle Ontario Canada
Posts: 737
Re: 1972 Jimmy + 5.3/4L60E/NP205

Yeah, I'm curious too !! I just received my adapter kit, and I'm really liking that Dakota dash cluster. Looks like one of those is in my future too.
Dan
hemi43 is offline   Reply With Quote
Old 05-13-2015, 08:55 AM   #13
Maddoxdb
Senior Member
 
Maddoxdb's Avatar
 
Join Date: Jun 2011
Location: Elk city ok
Posts: 884
Re: 1972 Jimmy + 5.3/4L60E/NP205

Sub'd.....
Maddoxdb is offline   Reply With Quote
Old 05-21-2015, 11:41 PM   #14
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
Re: 1972 Jimmy + 5.3/4L60E/NP205

alright alright... little bit of an update.

First - my original frame had been in a wreck, hacked up, and a new front end welded back on very poorly.. Both frame rails had been cut just under the firewall. The "donor" front end they found was from a 71 truck. The truck had always driven straight, but this just looked like an accident waiting to happen. So I got a SWEET deal on another 72 frame from board member larryd. I pulled the old frame out and the new frame got blasted and powder coated.











I won't be running AC so I pulled all this off and got a AC delete cover that I will be using in it's place.










Then the frame removal....


























Then the new frame got back from the coater. Turned out awesome. I purchased new 2.5 lift springs front and rear from Skyjacker at this time as well. Got everything loosely bolted up and she at least rolls right now.

Also installed a 87 blazer tank (31 gallon) and the sending unit to match. I'm going to run a walbro 255 in tank in place of the factory 87 pump since it is not high pressure.















__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 06-07-2015, 10:40 PM   #15
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
Re: 1972 Jimmy + 5.3/4L60E/NP205

I went to go have the local tranny shop swap out my AA output shaft and come to find out it was toast (the tranny) despite only having 55k miles on it. I called the lot I got it from and they told me that the t-case from the donor truck was cracked when they got the truck and someone must have driven it while all the fluid was leaking out and burned it up. Long story short, they are crediting me and I had another one I already had, rebuilt with some upgraded parts and shift kit. So now everything is brand new and no worries there anymore.

I installed the t-case with new poly bushings and the x-member. And then hooked up the rest of the AA kit to the back of the tranny (VSS, clocking ring, etc)

It was time to do a mock up in order to find out where my PacFab engine crossmember needed to be installed so I did that today. Got it all installed. Went pretty well. The bump stop brackets needed to be removed as the X-member was right on top of the factory rivets.























Next I am going to plumb all my fuel, transmission, brake lines while the drivetrain is on the frame. If I was smart I would have backed my truck into the garage for the tear down, I can't get the frame back under it with the engine/tranny installed so I'll pull those when the time comes and put the body back on.
__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 06-08-2015, 08:53 AM   #16
hemi43
Registered User
 
hemi43's Avatar
 
Join Date: Mar 2015
Location: Newcastle Ontario Canada
Posts: 737
Re: 1972 Jimmy + 5.3/4L60E/NP205

Looking good !! You mentioned that you had the frame powder coated, but what did you use to paint the diff housings? I've been trying to find a 2-part semi gloss black and ended up buying some Eastwood product.
Also, how much more forward does the 5.3 end up as compared to the original engine?
I've been gathering parts for the past couple months and will be doing almost the exact build that you're doing.
Dan
hemi43 is offline   Reply With Quote
Old 06-08-2015, 02:45 PM   #17
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
Re: 1972 Jimmy + 5.3/4L60E/NP205

I just used the "semi-gloss" black in the Dupli-color Engine Enamel.

I had the axles blasted down to bare metal, so I hit them with some self-etching primer first.

I don't have the exact measurements but I would guess that it moved the engine forward around 2" or less. If you want, measure from your crank pulley on yours to the front crossmember and I'll do the same.
__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 06-09-2015, 10:35 AM   #18
hemi43
Registered User
 
hemi43's Avatar
 
Join Date: Mar 2015
Location: Newcastle Ontario Canada
Posts: 737
Re: 1972 Jimmy + 5.3/4L60E/NP205

I just checked the location of the original engine, and the front of the pulley is 11 1/4" from the rad support. I would estimate that the pulley is about 2 1/4 inches away from the rear lower part of the cross member. Regardless, there's tons of room.
I'm still debating whether I'll be running AC. Do you think there's enough clearance for the l 5.3 compressor in it's original location?
I just cleaned the block on my 5.3, and looks just as clean as yours under the rocker cover. The block itself though was coated with a layer of rust about 1/16 thick thanks to our Canadian winters and road salt.
Another question I had is which power steering pump will you be using? I'd like to use the one on the 5.3, but concerned about differences in pressure.
BTW, my truck is originally from Salem Missouri.

Last edited by hemi43; 06-09-2015 at 10:53 AM.
hemi43 is offline   Reply With Quote
Old 06-10-2015, 12:34 PM   #19
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
Re: 1972 Jimmy + 5.3/4L60E/NP205

My crank pulley to the front crossmember is right at 1 1/4"

I slapped on my AC compressor and took some pictures. I don't think it is going to happen without notching the frame. A custom fitting wouldn't be an option either, at least from the angles I am looking at. A different mount would be the best way to do this.

As far as the power steering I am planning on using the factory 5.3 pump with a hydroboost out of the same year 04-2500. I have heard you can use a fitting on the rear of the pump to reduce the flow of the fluid. I'll post the picture and part # if I find it.



__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780

Last edited by GMC-YA68; 06-10-2015 at 09:16 PM.
GMC-YA68 is offline   Reply With Quote
Old 06-10-2015, 09:21 PM   #20
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
Re: 1972 Jimmy + 5.3/4L60E/NP205

Here is the reducer a fellow board member (shears) has used to reduced the pressure. His pump was bubbling from so much fluid flow and causing his pump to starve.
http://www.summitracing.com/parts/ds...MobileSwitchNo
__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 06-11-2015, 08:40 AM   #21
hemi43
Registered User
 
hemi43's Avatar
 
Join Date: Mar 2015
Location: Newcastle Ontario Canada
Posts: 737
Re: 1972 Jimmy + 5.3/4L60E/NP205

Thanks for the info Keegan !! Showing the location of the AC compressor answers my questions. Like I said, i'm still not sure if I'll be running AC or not, but if there's clearance issues using the OEM compressor I may just machine custom brackets and use a Sanden compressor. I'm hoping to start my build thread in a few weeks.
Dan
__________________
The one that dies with the most tools, wins !

www.dantechfabricating.com
hemi43 is offline   Reply With Quote
Old 06-11-2015, 10:48 AM   #22
partsstoreguy
Registered User
 
Join Date: Aug 2011
Location: sayre ok
Posts: 24
Re: 1972 Jimmy + 5.3/4L60E/NP205

I like the added capacity and the factory looks of the 80s fuel tank. Were there any problems getting it into place?
partsstoreguy is offline   Reply With Quote
Old 06-12-2015, 01:21 PM   #23
GMC-YA68
Registered User
 
GMC-YA68's Avatar
 
Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 651
Re: 1972 Jimmy + 5.3/4L60E/NP205

No, the tank fit well. I placed the front crossmember on the frame to where the tank fits very snug.
__________________
-Keegan-

'72 Jimmy 4x4 - 5.3/4L65E/NP205 swap
http://67-72chevytrucks.com/vboard/s...d.php?t=663780
GMC-YA68 is offline   Reply With Quote
Old 06-25-2015, 02:49 PM   #24
Justin@EntropyRad
Registered User
 
Justin@EntropyRad's Avatar
 
Join Date: Jan 2015
Location: Charlotte, NC
Posts: 485
Re: 1972 Jimmy + 5.3/4L60E/NP205

Still really dig this build man. The close-up pic of your kiddo wrenching on the engine is framable
__________________
* Call me NOT the website number*
Justin Novick
(773) 303-8251
Sales/Support
Entropy Radiator / Engineered Cooling Products
"The Sexiest Radiators For The Sexiest Hot Rods" - www.EntropyRad.com www.speedcooling.com
Justin@EntropyRad is offline   Reply With Quote
Old 07-11-2015, 02:55 PM   #25
Tillik
Registered User
 
Tillik's Avatar
 
Join Date: Sep 2012
Location: Layton, Utah
Posts: 186
Re: 1972 Jimmy + 5.3/4L60E/NP205

Very nice build. Keep it up!
__________________
James B.
1967 Chevy Fleetside Shortbed 4X2 (Black & Beautiful)
1971 Chevy Fleetside Shortbed 4X4 (White & Rough)
Tillik is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:17 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 1997-2013 67-72chevytrucks.com