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 1960 - 1966 Chevrolet & GMC Pickups Message Board > projects and builds

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-14-2019, 03:39 PM   #126
LostMy65
But Found Her 25yrs Later!
 
LostMy65's Avatar
 
Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 9,065
Re: 66 GMC Long to Short LS Swap

Quote:
Originally Posted by Duncan K View Post
]

Drilled out all the spot welds and removed the dash from my chevy donor cab to swap into my GMC. Also cut out the area above the windshield to be used as a patch panel for my cab.

[IMG][IMG][IMG]

All this rust repair is starting to get discouraging so I am going to take a break from it for a while and work on some mechanical stuff. Going to rebuild the rear end with a posi carrier, new ring and pinion, and all new bearings. Adding a rear disk brake kit from CPP.
Do you prefer the look of the chevy dash over the gmc?
.
I feel you on getting burned out on certain tasks. You're doing beautiful work.
__________________
I lost my 65 - Found it 25 years later:
http://67-72chevytrucks.com/vboard/s...d.php?t=426650

66 Service truck build:
http://67-72chevytrucks.com/vboard/s...d.php?t=428035
LostMy65 is offline   Reply With Quote
Old 07-29-2019, 05:57 PM   #127
Duncan K
Registered User
 
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 105
Re: 66 GMC Long to Short LS Swap

Quote:
Originally Posted by LostMy65 View Post
Do you prefer the look of the chevy dash over the gmc?
.
I feel you on getting burned out on certain tasks. You're doing beautiful work.
More so the Chevy gauges, but this was the easiest way to make the swap
__________________
66 GMC 910
My Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=754257
Duncan K is offline   Reply With Quote
Old 08-24-2019, 12:50 PM   #128
Duncan K
Registered User
 
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 105
Re: 66 GMC Long to Short LS Swap

Moving along with the rear end rebuild. Made myself a drift out of some parts that were laying around, knocked out the old axle bearings and replaced them.



Installed a rear disk brake kit from CPP. Everything fit pretty well except the brake pads on one side. They are too thick to fit over the rotor, will have to machine off a bit of the pad to fit.



New pinion gear installed, had to fab up a tool to hold the yoke so i could torque the nut.



Got the new posi carrier and 3:73 gears installed and set the back lash



Got the driveline angles sorted out. Needed to raise the trans up an inch and a half to match the pinion angle at 5 degrees. Had a new one piece drive shaft built, had to modify the cross member to provide clearance. Still have to finish welding it up



Waiting on a radiator that I ordered months ago from RnD. Took 6 weeks to ship, and now UPS has lost it.
__________________
66 GMC 910
My Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=754257
Duncan K is offline   Reply With Quote
Old 08-24-2019, 07:54 PM   #129
The Rocknrod
MCPO USN Ret.
 
The Rocknrod's Avatar
 
Join Date: Aug 2011
Location: China Spring, TX
Posts: 4,054
Re: 66 GMC Long to Short LS Swap

That's some great work your doing, you got talent.
The Rocknrod is offline   Reply With Quote
Old 08-24-2019, 09:16 PM   #130
Notch1988
Registered User
 
Notch1988's Avatar
 
Join Date: Aug 2009
Location: Lacombe, Alberta
Posts: 329
Re: 66 GMC Long to Short LS Swap

Sorry about the rad. Why so long for RnD to ship?
__________________
66 GMC swb dropmember accuair

Link to my build:
My GMC Project
Notch1988 is offline   Reply With Quote
Old 08-26-2019, 11:27 AM   #131
Duncan K
Registered User
 
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 105
Re: 66 GMC Long to Short LS Swap

Quote:
Originally Posted by Notch1988 View Post
Sorry about the rad. Why so long for RnD to ship?
Busy I guess, was told it would be around 3 weeks, ended up being 6. Who knows how long it will be now?
__________________
66 GMC 910
My Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=754257
Duncan K is offline   Reply With Quote
Old 08-28-2019, 09:41 AM   #132
88Stanger
Registered User
 
Join Date: Mar 2015
Location: Washington State
Posts: 491
Re: 66 GMC Long to Short LS Swap

Love the build! I am starting my "66 build this weekend. I just completed my full rebuild LS motor "69 C10, now "66 with 383 stroker and M20 4-Speed. Thanks for all the updates! I appreciate your work and helps me with mine.
88Stanger is offline   Reply With Quote
Old 11-06-2019, 08:44 PM   #133
Duncan K
Registered User
 
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 105
Re: 66 GMC Long to Short LS Swap

Not a whole lot of progress in the last few months. I finished welding up the hoop over the drive shaft. Also chopped an inch and a half out of the trans crossmember to get my angle right.

I've been hoping to get the motor fired up so I started to tackle the last little loose ends, battery, air intake, plugged off the extra return port on the power steering pump(hydroboost), got all the fluids filled. I built a temporary pod for a power switch, push button start, a fuse block and an oil pressure gauge. Powered everything up, pushed the start button, it cranked but not even a sputter. Hooked up a scanner and it was throwing a code because my ECT wasn't hooked up. The harness from the donor is very strange and doesn't match with any pin out or wiring diagram that I could find. I couldn't figure out how or where the ECT sensor wiring got to the ECU (have a whole other thread on this). Decided this harness and ECU had to get replaced. Only one I could find locally was drive by wire so I had to get the pedal, tac module, and a DBW throttle body to match it.

Round 2 on the harness rework.



I paid a guy to reflash the first ECU, but after reading a great thread by Gregski in the LS Swap section I decided to take the plunge and buy HPTuners and reflash this one myself. I made a trip to the junk yard and picked up a OBD2 port and some ECU plugs to make a bench harness so I could make changes to the ECU out of the truck. Plugged in and fired up HPTuners, did the simple stuff like removing Vats and all the emissions stuff.



Installed the new harness and ECU, pushed the button, still cranks and no start. Did some trouble shooting, injectors getting signal, but no spark. Ended up finding a ground for the coils that I forgot to hook up. Grounded that to the block, now I have spark but still doesn't even sputter. Checked for fuel, have pressure before the regulator but not a drop on the other side. Stopped by a few parts places today but couldn't find a replacement. Getting one from a friend so fingers crossed I'll be firing it up tomorrow!! I figured that if the regulator is plugged solid I should probably clean the injectors. They are getting a bath in my ultrasonic cleaner and some seafoam.



After almost 5 months I finally got my radiator from RnD. Took 6 weeks to ship, then UPS lost it, then found it but the fan was damaged, shipped it back to RnD to be replaced and took over a month to finish the claim so it could be shipped out again. FedEx had it at my door a week later! Long wait but its a very good looking product.

__________________
66 GMC 910
My Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=754257
Duncan K is offline   Reply With Quote
Old 11-07-2019, 09:57 PM   #134
Duncan K
Registered User
 
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 105
Re: 66 GMC Long to Short LS Swap

Turns out I had my fuel lines reversed, switched them around a it fired right up! Idles better than I thought it would without tuning.

https://youtu.be/o16voQxiL0I
__________________
66 GMC 910
My Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=754257
Duncan K is offline   Reply With Quote
Old 11-07-2019, 10:53 PM   #135
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 18,155
Re: 66 GMC Long to Short LS Swap

Sounds good.
__________________
67SWB-B.B.RetroRod
64SWB-Recycle
89CCDually-Driver/Tow Truck
99CCSWB Driver
All Fleetsides

Building a small, high rpm engine
with the perfect bore, stroke and rod ratio is very impressive...
like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.

Cubic inches is like Indiana Jones with a cheap pistol....
SCOTI is online now   Reply With Quote
Old 11-10-2019, 12:00 PM   #136
sstock
Registered User
 
sstock's Avatar
 
Join Date: Mar 2014
Location: Tacoma Wa
Posts: 41
Re: 66 GMC Long to Short LS Swap

Spent a lot of time going through your build thread. Congrats of bringing this truck back to life, many would of walked right by it.
Sir you have mad skills.

Steve
__________________
1953 3100 261cu in, sm420, 3.55 torque tube, omaha orange
1964 GMC 1000 series,custom, 305E, sm420
sstock is offline   Reply With Quote
Old 11-15-2019, 05:55 PM   #137
Duncan K
Registered User
 
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 105
Re: 66 GMC Long to Short LS Swap

Back to rust repair on the cab. Finished the driver side cab corner.



Moved on to the firewall/kick panel. This part is really tricky but I learned a lot from doing the passenger side so hopefully this side goes quicker

__________________
66 GMC 910
My Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=754257
Duncan K is offline   Reply With Quote
Old 11-20-2019, 10:21 PM   #138
Duncan K
Registered User
 
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 105
Re: 66 GMC Long to Short LS Swap

Cut, fit, weld, grind, repeat!! Slow and steady

__________________
66 GMC 910
My Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=754257
Duncan K is offline   Reply With Quote
Old 11-21-2019, 12:24 AM   #139
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 22,378
Re: 66 GMC Long to Short LS Swap

Coming along nicely
__________________
Power Steering Box Adapter Plates For Sale HERE
Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE
Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE
Hydroboost Mounting Plates HERE
Captainfab is offline   Reply With Quote
Old 11-21-2019, 12:12 PM   #140
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 18,155
Re: 66 GMC Long to Short LS Swap

Quote:
Originally Posted by Captainfab View Post
Coming along nicely
x2.
__________________
67SWB-B.B.RetroRod
64SWB-Recycle
89CCDually-Driver/Tow Truck
99CCSWB Driver
All Fleetsides

Building a small, high rpm engine
with the perfect bore, stroke and rod ratio is very impressive...
like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.

Cubic inches is like Indiana Jones with a cheap pistol....
SCOTI is online now   Reply With Quote
Old 12-08-2019, 03:08 PM   #141
Duncan K
Registered User
 
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 105
Re: 66 GMC Long to Short LS Swap

Got tired of sheet metal and rust. Decided to start on the exhaust. Ordered some stainless v bands, straight pipe, a few bends, and some Magnaflow mufflers. I plasma cut two holes in the cross member and welded in a couple support rings. Right after I cut the holes I found out that one header comes out closer to the frame rail so I would have to jog the pipe over to keep them parallel. Made a bunch of pie cuts to make the jog. Got everything tacked and started welding. I have never welded stainless before. Started with the v band which went ok, but once I moved on to the pie cuts not so good. Doesn't seem like i am getting very good gas coverage, welds are dark and have a crusty film on them. All the pieces were cleaned with acetone. Tried running a bigger #10 cup, upped the gas flow, nothing helped. I am not back purging so I wonder if impurities are being pulled in from the inside of the pipe?



Started on the "H" pipe, had to angle it to clear the driveshaft. I found a cool pipe notch template online which a printed, cut out and slipped around the pipe. Cut it out with a grinder and cut off wheel. Fit up was perfect.



Going to do some home work on welding stainless before I weld any more. Thinking about getting one of those monster size Furick Fupa cups with the diffuser and see if that helps.
__________________
66 GMC 910
My Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=754257
Duncan K is offline   Reply With Quote
Old 12-08-2019, 03:35 PM   #142
SkinnyG
Registered User
 
SkinnyG's Avatar
 
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 903
Re: 66 GMC Long to Short LS Swap

Looks a little hot. Try speeding up a bit. You kinda get the heat sweet and then boogie so you don't overheat the stainless.

Are you back-gassing, or Solar Flux?
__________________
1961 Apache: now under the knife
1977 Silverado: The Daily, shortboxed & dropped, potato-potato
V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7lbs in a 1lb bag
Lotus Super 7 Replica: Scratch-built street-legal rollerskate
SkinnyG is offline   Reply With Quote
Old 12-08-2019, 06:06 PM   #143
Duncan K
Registered User
 
Join Date: Oct 2017
Location: Calgary, Alberta
Posts: 105
Re: 66 GMC Long to Short LS Swap

Quote:
Originally Posted by SkinnyG View Post
Looks a little hot. Try speeding up a bit. You kinda get the heat sweet and then boogie so you don't overheat the stainless.

Are you back-gassing, or Solar Flux?
Yeah, I cooked it pretty bad at the beginning. Got my heat and travel speed dialed in a bit better on the last joints I did. Still not shiny and clean though.

No back purge, never heard of Solar Flux
__________________
66 GMC 910
My Build thread http://67-72chevytrucks.com/vboard/s...d.php?t=754257

Last edited by Duncan K; 12-08-2019 at 11:27 PM.
Duncan K is offline   Reply With Quote
Old 12-08-2019, 07:07 PM   #144
SkinnyG
Registered User
 
SkinnyG's Avatar
 
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 903
Re: 66 GMC Long to Short LS Swap

You need to protect the back of the weld. Back purge is good if you have the apparatus for it (a "T" and second regulator works well).

I've done Solar Flux B which is a powder you mix with Methanol and paint the backside - it prevents "sugaring" (looks like barnacles) and polluting the weld.
__________________
1961 Apache: now under the knife
1977 Silverado: The Daily, shortboxed & dropped, potato-potato
V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7lbs in a 1lb bag
Lotus Super 7 Replica: Scratch-built street-legal rollerskate
SkinnyG is offline   Reply With Quote
Old Today, 05:39 PM   #145
tinydb84
Registered User
 
tinydb84's Avatar
 
Join Date: Jul 2009
Location: San Jose Ca
Posts: 2,675
Re: 66 GMC Long to Short LS Swap

You are running too hot or too slow. With thin stainless tube I weld from 1 o'clock to 11 o'clock (I am right handed). When you run 3 to 12 it is welding up hill and building heat.

Definitely want to back purge the weld. That will help. I bought a second tank and another regulator. It was a tiny bit more expensive but now I never run out of gas on a weekend (the dual flow regulators are expensive!).

I run a #7 cup most of the time. Get a thin filler rod. You cool the puddle by adding more rod and it will absorb more heat.
__________________
David
Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991
My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985
Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557
Instagram: myfabguy
tinydb84 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 07:02 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com