LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

Doing Swap next week! Any tips/advice?

Thread Tools
 
Search this Thread
 
Old 03-19-2014, 09:09 AM
  #1  
Senior Member
Thread Starter
iTrader: (1)
 
Buggy Disaster's Avatar
 
Join Date: Mar 2012
Location: Georgia
Posts: 574
Likes: 0
Received 6 Likes on 4 Posts
Car: 91' Z28. 70' Dune Buggy
Engine: LSX Cam/Full Bolt ons
Transmission: T56
Axle/Gears: 4.10
Doing Swap next week! Any tips/advice?

Well guys, I'm finally doing my 305/700r4 to LS1/T56 swap next week. I have all my parts together, and a week off.

Its my first motor/trans swap, so I'm curious, anyone have any tips or advice? What not to do? What to do to save a few headaches?
Old 03-19-2014, 11:04 AM
  #2  
Member

iTrader: (1)
 
gbeaird's Avatar
 
Join Date: Sep 2004
Location: Pearland, Texas
Posts: 112
Likes: 0
Received 1 Like on 1 Post
Car: 1985 Firebird
Engine: 305
Transmission: TH350
Re: Doing Swap next week! Any tips/advice?

It will probably take you more than a week. Getting the engine/trans in the car is the easy part. Getting all the bits connected is what eats up all the time.
Old 03-19-2014, 11:33 AM
  #3  
Junior Member
 
DirtyBird87's Avatar
 
Join Date: Mar 2013
Location: San Diego, CA
Posts: 79
Likes: 0
Received 0 Likes on 0 Posts
Car: 1987 Pontiac Trans Am GTA
Engine: 5.7L TPI
Transmission: Auto
Re: Doing Swap next week! Any tips/advice?

Buggy if you dont mind, could you list the parts you collected to get you ready for the swap. I'm thinking of doing an LS1 swap and was just curious where to start. Should I get the motor/trans first? Or start with the k-member and supporting mods to drop the motor in.
Old 03-19-2014, 11:34 AM
  #4  
COTM Editor

iTrader: (11)
 
BADNBLK's Avatar
 
Join Date: Mar 2006
Location: WINDSOR, CO
Posts: 4,098
Likes: 0
Received 12 Likes on 12 Posts
Car: 91 Z28, 87 SC, 90 IROC, 92 RS
Engine: LS1, 305 TPI, L98, NADA
Transmission: T56, 700r4's, and NADA
Axle/Gears: 3.89, 3.42, 3.23, NADA
Re: Doing Swap next week! Any tips/advice?

I don't have any tips, but I'll be watching for yours lol. Good luck and hope it all goes smooth man.
Old 03-19-2014, 12:11 PM
  #5  
Member
 
camaroracer016's Avatar
 
Join Date: Jan 2005
Location: Akron,Oh
Posts: 180
Likes: 0
Received 0 Likes on 0 Posts
Car: 88 Camaro
Engine: 5.3
Transmission: TH350
Re: Doing Swap next week! Any tips/advice?

my project took about 6 months. I took my time. Also, i didn't have a lump sum of money to work with. gbeaird is right, getting the big parts in is easy. Wiring and all the odds and ends is what takes the most time.
Old 03-19-2014, 12:42 PM
  #6  
Supreme Member

iTrader: (2)
 
jbenge's Avatar
 
Join Date: Sep 1999
Location: Danville, IN
Posts: 1,482
Received 42 Likes on 28 Posts
Car: 1991 Camaro Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: Strange 12 Bolt, 3.42
Re: Doing Swap next week! Any tips/advice?

Do lots of research and bookmark the pages with relevant information so you can find it easily when you need it later.

Take pictures of everything that you take apart that might be difficult to figure out how to put back or could go multiple ways. (I've referenced my pictures many times, sometimes for stuff that I thought I would never need a picture of...lol)

I use zip lock bags to store nuts/bolts/fasteners/brackets and label each bag so I know exactly what it is. Makes putting it back together much faster when you aren't trying to figure out which bolts go where.

Take your time and try to do everything right, even if that means leaving the car down longer. Organize the wiring, cover wires/hoses that could rub against something, route wiring/hoses away from the exhaust..etc Saves a lot of headaches down the road and makes your swap much more reliable.

Carefully inspect everything from the LS engine, now is the time to replace anything that is suspect.

You may want to buy a LS engine building book, its nice to have one place to look for all the torque values and assembly instructions.
Old 03-19-2014, 01:22 PM
  #7  
Senior Member

iTrader: (4)
 
robguitargod1's Avatar
 
Join Date: Oct 2008
Location: Niles, IL
Posts: 857
Likes: 0
Received 5 Likes on 4 Posts
Car: '91 LS6/T56/9"
Engine: LS6
Transmission: T56
Axle/Gears: Currie 9"/4.11, detroit truetrac
Re: Doing Swap next week! Any tips/advice?

Have everything ahead of time! Paying special attention to your wiring harness and tuning.

You really don't want to kill 3 days waiting for something you forgot and had to buy online.
Old 03-20-2014, 07:07 AM
  #8  
Supreme Member

iTrader: (24)
 
Pocket's Avatar
 
Join Date: Jun 2005
Location: NC
Posts: 7,904
Likes: 0
Received 95 Likes on 58 Posts
Car: 92 Firebird
Engine: Supercharged 6.0
Transmission: T56
Axle/Gears: 8.8 3.73
Re: Doing Swap next week! Any tips/advice?

Doing everything from below saves time

Drop the old engine/trans/harness complete
Set the new drivetrain complete with harness, exhaust manifolds/headers and accessories on the k-member and install as a unit

Have all the belts/hoses/fluids ready

My very first swap took 5 very long days, but I did it by myself
Old 03-20-2014, 10:08 AM
  #9  
Senior Member

 
jazzdadss's Avatar
 
Join Date: Dec 2009
Location: Texas
Posts: 686
Received 4 Likes on 4 Posts
Car: 1989 IROC LSX
Engine: 5.7 TPI - LS1 Forged by LME
Transmission: 700r4 - 4L60E
Axle/Gears: 3.23 - 3.73
Re: Doing Swap next week! Any tips/advice?

If they sold patience in a bottle I would suggest a six-pack.
Old 03-20-2014, 09:48 PM
  #10  
Supreme Member

iTrader: (6)
 
Zach/90\irocZ's Avatar
 
Join Date: Aug 2011
Location: San Diego, California For Now
Posts: 2,379
Likes: 0
Received 10 Likes on 10 Posts
Car: 88 Formula, 90 Iroc RIP, 92 RS Sold
Engine: 305 to 350
Transmission: 700r4
Axle/Gears: 10 Bolt
Re: Doing Swap next week! Any tips/advice?

It is time consuming my build is taking forever lol only reason is time I usually work on it all day Saturdays only if the Wife has no plans and haven't had time lately

I only have starter and alternator and plug up harness and exhaust left but that's easy ,been lazy and had no time lately , going to work on it this weekend tho

But if I was to add the time all together I would say about 2 weeks
From putting together engine and trans, torque everything down and then sliding everything in

All the small details will add to the time

I would say get a LS engine building Buick it was very helpful
Organize everything
Having a checklist helped me so I wouldn't miss anything
Replace needed parts since it will be the prime opportunity to do so
Ensure you have the tools to avoid the back and forth trips to auto store
And just take your time and look over everything and then double check

It's pretty straight forward besides the wiring
Old 03-20-2014, 10:24 PM
  #11  
Supreme Member

 
86White_T/A305's Avatar
 
Join Date: Nov 2001
Location: Canada,Ont
Posts: 2,210
Received 26 Likes on 20 Posts
Car: 1987 TransAm Ttop
Engine: 2005 LQ4
Transmission: Ls1 T56
Axle/Gears: 3:42
Re: Doing Swap next week! Any tips/advice?

My first ls1 swap took a week.I spent 2 days chasing a very very simple issue of why it wouldnt start because i hooked up the wrong ignition wire lol. As everyone said above..the big bolt in stuff is easy. Wiring can be easy depending how you tackle it. I had an fbody engine harness and ecm...motor was on a stand and I simply plugged in all the sensors I needed for motor/trans..anything left over for emissions etc I just depinned it out.The wires I needed for the interior were speedo,tach, a/c or cruise(optional), fan 1 and fan 2 trigger, and fuel pump trigger.Then your 12v battery,igniton in run!, and ground.

Then off to exhaust for a y pipe to be made.Just have to tell yourself its just like any other engine swap...they all need to same basics to run.Cover those basics and the rest are easy to make work.Once you finish doing it and the car drives..you will see it can be done fairly quickly if everything piece you needed was right infront of you. I watch those holley ls fest engine swap challenges and think wow those guys are nuts..my shortest time to do a complete swap was 3 days..they bang them out in mere minutes! :P
Old 03-21-2014, 03:14 PM
  #12  
Junior Member

iTrader: (2)
 
drduster's Avatar
 
Join Date: Nov 2006
Location: Snellville, GA
Posts: 94
Received 0 Likes on 0 Posts
Car: '88 Iroc-Z
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23 posi 10 bolt
Re: Doing Swap next week! Any tips/advice?

- Weather you're installing the engine from the top or bottom, remove the coils from the passenger side. The extra clearance between the valve cover & a/c box (if you have a/c) will ease getting the engine in.

- Decide how you want to configure your heater hoses & if you want a diverter valve for a/c before installing the engine. The area the heater core is located is very tight after the engine is installed.

- If using long tube headers & the factory TPI front to rear fuel lines, consider installing heat wrap to the fuel/brake line bundle before installing the engine/trans. Clearance is tight in this area after the engine is in.
Old 03-24-2014, 12:12 PM
  #13  
Supreme Member

iTrader: (4)
 
TEDSgrad's Avatar
 
Join Date: Sep 2010
Location: Double Bratville
Posts: 1,617
Likes: 0
Received 42 Likes on 31 Posts
Car: '89 Formula
Engine: LS2
Transmission: 4L65E
Axle/Gears: MW 3.42 12 Bolt
Re: Doing Swap next week! Any tips/advice?

Take lots of pics!
My header install required taking out the starter. I had to stop briefly and unbolt the triangle brace (DS) because of my alternator position. I wired what I could and wrapped in a bag on top.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Thomas
Interior Parts for Sale
12
10-03-2015 05:34 PM
TheExaminer
Cooling
26
08-26-2015 04:59 PM
michealleger
Engine Swap
5
08-26-2015 03:29 PM
theshackle
Tech / General Engine
2
08-22-2015 06:52 PM
EFR2000
Tech / General Engine
0
08-18-2015 08:54 PM



Quick Reply: Doing Swap next week! Any tips/advice?



All times are GMT -5. The time now is 03:56 AM.