Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

54 gmc

Thread Tools
 
Search this Thread
 
Old Nov 28, 2018 | 09:36 AM
  #1  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default 54 gmc

A quick word about me before I get into the project.(not a sales pitch) I have been in the repair industry for almost 26 years and have done my share of hot rods and engine swaps for myself and friends.
This is the first for a paying customer. I don't usually post my projects and haven't ever posted a customers.

This is a cool one. 1954 GMC originally bought by this customer's dad. After his father passed away he wasn't sure what he wanted to do with it. I'm honored he came to me to have the work done.
it will be completed in stages as this guy isn't rich and he's not using any kind of credit to do the build.
Hope ya'll enjoy the progress

Hauling iy to the shop

Getting a look and making plans

Out with the old straight axle
l

Last edited by cadivette; Mar 24, 2020 at 10:29 AM.
Reply
Old Nov 28, 2018 | 09:45 AM
  #2  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default


New cross member and spring perches going in

Everything welded up

Crosse member

Suspension assembly

Mustang II goodness

I like the way it sits. Ugly wheels are just for now so we can move it around.
pool
Reply
Old Nov 28, 2018 | 09:55 AM
  #3  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default


Old torque tube differential. I forgot how heavy these things are!


Blazer wide ridet 4x4 diff, 3.73 posi 8.5. Should work nice

Mock up. Using the stock springs for now. Pulled 6 leafs from an 11 leaf pack and used a 2 inch block for the final set up.

This should be the ride height. No schocks on it yet. The stock inline six and hydramatic transmission are in the bed so the ride height might come up a bit

Moved it outside to make room for other not so fun work(gotta pay the bills) I think its gonna shape up to be a nice ride when its finished.
Reply
Old Nov 28, 2018 | 10:57 AM
  #4  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
Default

Interesting! That's gonna be a nice ride!
BTW, I did not know they were putting Hydramatics in trucks that early!
Reply
Old Nov 29, 2018 | 01:49 PM
  #5  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default

Originally Posted by G Atsma
Interesting! That's gonna be a nice ride!
BTW, I did not know they were putting Hydramatics in trucks that early!

Neither did I, but it was in the truck with an auto shifter on the column and the badge on the fender. Had a heater and auto trans, that would be an LTZ package by standards of that year.

Last edited by cadivette; Mar 24, 2020 at 10:28 AM.
Reply
Old Nov 29, 2018 | 03:17 PM
  #6  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
Default

Those who bought GMC's had "arrived", and yours was the boulevard cruisin' model!
Reply
Old Nov 29, 2018 | 09:07 PM
  #7  
gofastwclass's Avatar
TECH Addict
iTrader: (2)
 
Joined: Aug 2009
Posts: 2,949
Likes: 28
From: KCMO
Default

Cool project.
Reply
Old Dec 5, 2018 | 01:51 PM
  #8  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default

Engine mock up

engine mock up
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Dec 8, 2018 | 09:19 PM
  #9  
Motown 454's Avatar
TECH Enthusiast
iTrader: (15)
 
Joined: Mar 2007
Posts: 686
Likes: 17
From: S.E. Ma.
Default

Great project!
Reply
Old Aug 17, 2019 | 10:06 AM
  #10  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default A little more progress

I've purchased the engine and am starting a stock, basic rebuild. My build room is full right now. A transmission torn down, 2 short blocks assembled and 2 more engines going back together. The one for the 54 is an iron 5.3, stock heads, small cam. Once the engine and trans are together that GMC will be back in the shop.
The second iron block is for a 72 Monte Carlo swap for another customer, more on that one soon......


Reply
Old Aug 17, 2019 | 11:32 AM
  #11  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,291
Likes: 3,615
From: Central Cal.
Default

I see 2 Gen III blocks, then a Gen IV block in the last shot. which one is yours?
Reply
Old Aug 17, 2019 | 07:11 PM
  #12  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default

The 2 Gen III are for the customers vehicles. The 2 Gen IV are my personal engines.
Reply
Old Jan 15, 2020 | 09:18 AM
  #13  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default Updates

Here are a few update pics. The customer decided that they wanted cruise control so I started reworking a DBW harness to make cruise integration easier.

New pan. Super low ground clearance

Firts stab

Initial fit

Final fit

Header clearance

Wiring ......

Most of the wiring will run uner the intake ,injector and coil wiring

Accessory drive final fit
Reply
Old Jan 15, 2020 | 10:32 AM
  #14  
Motown 454's Avatar
TECH Enthusiast
iTrader: (15)
 
Joined: Mar 2007
Posts: 686
Likes: 17
From: S.E. Ma.
Default

Nice job, seeing all those wires gave me a head ache! lol
Reply
Old Jan 22, 2020 | 08:43 PM
  #15  
rpturbo's Avatar
TECH Addict
15 Year Member
Photogenic
Liked
Loved
iTrader: (47)
 
Joined: Nov 2008
Posts: 2,422
Likes: 223
From: A-Town, Ill side
Default

Did you massage the firewall on this? It looks like the engine is sitting back pretty far compared to some I have seen.
Reply
Old Mar 22, 2020 | 01:25 PM
  #16  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default

Originally Posted by rpturbo
Did you massage the firewall on this? It looks like the engine is sitting back pretty far compared to some I have seen.
Firewall is stock. I used a kick out sump sheet metal pan that allowed me to drop it way down. This allowed it to also move back quite a way.
I really wanted to do this to keep weight as much behind the front axle as possible.
Reply
Old Mar 22, 2020 | 01:36 PM
  #17  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default


Steering column modified for a double d shaft and u joints

Engine fuse and relay panel. This is tied to the main fuse panel only through one ignition fuse and the brake lamp fuse(for the TCC brake feed) This was a little more work but makes it clean and aimplifies the wiring by isolating the engine harness.

More wiring, more wiring , more wiring.......

Starting the body harness withthe ignition switch and powering the engine. Small victory last night. Turn the key on ECM comes alive Fuel pump primes Check engine light comes on Engine cranks Aleays nice to see everything work when you spend this much time on wiring.
Reply
Old Mar 22, 2020 | 05:40 PM
  #18  
Tuskyz28's Avatar
TECH Veteran
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2014
Posts: 4,892
Likes: 703
From: Mississippi
Default

Love the truck. You hardly ever see the old GMC trucks ....
Reply
Old Mar 23, 2020 | 06:55 PM
  #19  
rpturbo's Avatar
TECH Addict
15 Year Member
Photogenic
Liked
Loved
iTrader: (47)
 
Joined: Nov 2008
Posts: 2,422
Likes: 223
From: A-Town, Ill side
Default

Coming along nicely! Are you going to run a vintage air unit in this or something else?
Reply
Old Mar 24, 2020 | 10:15 AM
  #20  
cadivette's Avatar
Thread Starter
On The Tree
15 Year Member
iTrader: (1)
 
Joined: Dec 2006
Posts: 113
Likes: 28
From: DFW TX
Default

Originally Posted by rpturbo
Coming along nicely! Are you going to run a vintage air unit in this or something else?

I've already got a system from MostalgNostalgic AC out of Florida. The kit I bought was without compressor or brackets. Includes under dash unit, condenser, hoses, fittings, dryer, brackets and controls for under $800. It's also all mechanically controlled with cables so there is really nothing to fail. And they answer the phone when you call.
Reply



All times are GMT -5. The time now is 09:25 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE