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.

a few LT1 swap questions..

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Old Jul 25, 2013 | 04:34 PM
  #1  
jahblah's Avatar
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From: NC
Car: 87' Firebird Formula
Engine: 350
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Axle/Gears: 3.73
a few LT1 swap questions..

Hi guys, i've started my swap already and I have a few questions.

1) Can I use my donor car's key for the VATS system or will I just have to do the resistor bypass trick?

2) Will the LT1 radiator, dual fans, hoses, etc.. fit into my thirdgen without the hassle of cutting and such?

3) Will the 4L60E driveshaft work with my 28 spline rear end? Same length and all?
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Old Jul 25, 2013 | 06:03 PM
  #2  
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Originally Posted by jahblah
1) Can I use my donor car's key for the VATS system or will I just have to do the resistor bypass trick?
I don't believe they are compatible, but I don't know that for a fact. Most members seem to do the bypass.

Originally Posted by jahblah
2) Will the LT1 radiator, dual fans, hoses, etc.. fit into my thirdgen without the hassle of cutting and such?
Yes.

Originally Posted by jahblah
3) Will the 4L60E driveshaft work with my 28 spline rear end? Same length and all?
Yes.
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Old Jul 25, 2013 | 07:19 PM
  #3  
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Car: '90 Camaro
Engine: 305 tbi
Transmission: T5
Axle/Gears: 9 bolt posi 373
Re: a few LT1 swap questions..

the third gen radiator is bigger from what ive been told
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Old Jul 25, 2013 | 07:35 PM
  #4  
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From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: a few LT1 swap questions..

4) Can the AC compressor be gutted out or would removing it be better/easier? I do not plan to use the AC..
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Old Jul 25, 2013 | 07:44 PM
  #5  
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From: NC
Car: 87' Firebird Formula
Engine: 350
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Axle/Gears: 3.73
Re: a few LT1 swap questions..

Originally Posted by DiabolicalRS
the third gen radiator is bigger from what ive been told
my radiator cracked..thats why i started my LT1 swap so soon. didn't want to buy another.
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Old Jul 27, 2013 | 08:25 AM
  #6  
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Car: 92 Vette, 83 Camaro
Engine: 305 going to 95 LT1
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Axle/Gears: 3.73 posi with disc brakes
Re: a few LT1 swap questions..

You are not going to use A/C down here in the Carolinas?! As you saw in my thread, I'm going with the Corvette accessory set up which puts the A/C compressor and alternator up top and cutting the K-member is not needed. BUT, this set up costs around $800.
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Old Jul 28, 2013 | 01:43 PM
  #7  
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From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: a few LT1 swap questions..

Originally Posted by Strick1
You are not going to use A/C down here in the Carolinas?! As you saw in my thread, I'm going with the Corvette accessory set up which puts the A/C compressor and alternator up top and cutting the K-member is not needed. BUT, this set up costs around $800.
Lol I've gotten too accustomed to the Carolina humidity. My camaro had AC and I NEVER used it. Never cut it on. I'm a windows down kind of guy. I had saw your thread and was searching for a Vette acc setup but they are (apparently) worth their weight in gold lol. So I went with the AC delete pulley. Just ordered it about 4 minutes ago actually. I think I will post a build thread like you did. Photos and such. And I will be heading to SC to feel YOUR heat in about 2 months. USMC Boot Camp on Parris Island, SC. Can't wait.
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Old Jul 28, 2013 | 04:03 PM
  #8  
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Car: 92 Vette, 83 Camaro
Engine: 305 going to 95 LT1
Transmission: 5 speed going to T56 6 speed
Axle/Gears: 3.73 posi with disc brakes
Re: a few LT1 swap questions..

Originally Posted by jahblah
Lol I've gotten too accustomed to the Carolina humidity. My camaro had AC and I NEVER used it. Never cut it on. I'm a windows down kind of guy. I had saw your thread and was searching for a Vette acc setup but they are (apparently) worth their weight in gold lol. So I went with the AC delete pulley. Just ordered it about 4 minutes ago actually. I think I will post a build thread like you did. Photos and such. And I will be heading to SC to feel YOUR heat in about 2 months. USMC Boot Camp on Parris Island, SC. Can't wait.
Remember what Gen Patton said,"Learn how to let the enemy die for his country." Boot camp will teach you how to help him die for his country. I'll thank you in advance for your service. My advice: start now to get in shape if you haven't already.
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Old Jul 28, 2013 | 11:47 PM
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From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: a few LT1 swap questions..

Originally Posted by Strick1
Remember what Gen Patton said,"Learn how to let the enemy die for his country." Boot camp will teach you how to help him die for his country. I'll thank you in advance for your service. My advice: start now to get in shape if you haven't already.
Indeed. And I am in pretty great shape. I run 4-6 miles all the time, weight train, and core train. I'm extremely physically active. Just waiting to be pushed beyond my full limits. This swap is pushing my patient limits now. Broke a manifold bolt and still trying to gather how I will do the fuel lines. I am not doing AN lines anymore. Too much to piece together. I will be attempting to fuse the 4th gen fuel lines with the 3rd gen hard lines. Probably will melt them together. And this harness thing. Killing me lol
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Old Jul 29, 2013 | 09:24 AM
  #10  
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From: South Carolina
Car: 92 Vette, 83 Camaro
Engine: 305 going to 95 LT1
Transmission: 5 speed going to T56 6 speed
Axle/Gears: 3.73 posi with disc brakes
Re: a few LT1 swap questions..

Originally Posted by jahblah
Indeed. And I am in pretty great shape. I run 4-6 miles all the time, weight train, and core train. I'm extremely physically active. Just waiting to be pushed beyond my full limits. This swap is pushing my patient limits now. Broke a manifold bolt and still trying to gather how I will do the fuel lines. I am not doing AN lines anymore. Too much to piece together. I will be attempting to fuse the 4th gen fuel lines with the 3rd gen hard lines. Probably will melt them together. And this harness thing. Killing me lol
I've been studying the shop manuals for both my Camaro and Caprice. It's possible, but it will take at least a case of adult refreshment once I start on the wire by wire process. I think the best thing to do is put the motor in and then start the wiring. I haven't even thought about the fuel system.
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Old Jul 29, 2013 | 11:20 AM
  #11  
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Car: 92 Ttop Z28
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Transmission: T-56
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Re: a few LT1 swap questions..

Originally Posted by Strick1
I've been studying the shop manuals for both my Camaro and Caprice. It's possible, but it will take at least a case of adult refreshment once I start on the wire by wire process. I think the best thing to do is put the motor in and then start the wiring. I haven't even thought about the fuel system.

Just an opinion of course, but I find it easier to do the harness before the engine goes in. Just allows much more access to routing wires on the engine. set PCM wire length, then mark the center of the engine on the harness at the back of the intake, do the same with the thirdgen harness, then merge them together making sure the mark for center of engine on both harnesses is lined up.
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Old Jul 29, 2013 | 02:11 PM
  #12  
jahblah's Avatar
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From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: a few LT1 swap questions..

Originally Posted by Strick1
I've been studying the shop manuals for both my Camaro and Caprice. It's possible, but it will take at least a case of adult refreshment once I start on the wire by wire process. I think the best thing to do is put the motor in and then start the wiring. I haven't even thought about the fuel system.
Lol yes my friend, the fuel system must be tackled. I ordered my fuel pump last week. Doing the AN lines conversion just seemed to complicated to me. This is not going to be a show car so braided lines weren't really an interest. I just want it to run. I think I will cut the 3rd gen hardlines back by the transmission well, then fuse the 4th gen lines there and run them up the firewall.
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Old Jul 30, 2013 | 07:01 AM
  #13  
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From: Indianapolis, in
Car: 1987 Sports coupe/z28
Engine: 2.8/ swapping 5.3
Transmission: 700r4
Axle/Gears: Open 3.42
Re: a few LT1 swap questions..

Originally Posted by jahblah
Hi guys, i've started my swap already and I have a few questions.

1) Can I use my donor car's key for the VATS system or will I just have to do the resistor bypass trick?

2) Will the LT1 radiator, dual fans, hoses, etc.. fit into my thirdgen without the hassle of cutting and such?

3) Will the 4L60E driveshaft work with my 28 spline rear end? Same length and all?

I got my vats bypass from eBay for about $15
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Old Aug 1, 2013 | 06:23 AM
  #14  
jahblah's Avatar
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From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: a few LT1 swap questions..

Originally Posted by jaybdaboat
I got my vats bypass from eBay for about $15
Does this look like the bypass that you used?
http://item.mobileweb.ebay.com/viewi...d=271223021636
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