a few LT1 swap questions..
Thread Starter
Member
Joined: Sep 2011
Posts: 287
Likes: 1
From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
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?
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?
Joined: Mar 2000
Posts: 43,187
Likes: 46
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Yes.
Thread Starter
Member
Joined: Sep 2011
Posts: 287
Likes: 1
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..
Thread Starter
Member
Joined: Sep 2011
Posts: 287
Likes: 1
From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Senior Member

Joined: Mar 2013
Posts: 556
Likes: 12
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..
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.
Thread Starter
Member
Joined: Sep 2011
Posts: 287
Likes: 1
From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: a few LT1 swap questions..
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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Senior Member

Joined: Mar 2013
Posts: 556
Likes: 12
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..
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.
Thread Starter
Member
Joined: Sep 2011
Posts: 287
Likes: 1
From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: a few LT1 swap questions..
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
Senior Member

Joined: Mar 2013
Posts: 556
Likes: 12
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..
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
Joined: Jun 2006
Posts: 576
Likes: 4
From: Gobles, Michigan
Car: 92 Ttop Z28
Engine: Cammed 6.0
Transmission: T-56
Axle/Gears: Built 10 bolt-3.90s w/ PBR discs
Re: a few LT1 swap questions..
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.
Thread Starter
Member
Joined: Sep 2011
Posts: 287
Likes: 1
From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: a few LT1 swap questions..
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. 

Senior Member
Joined: Jan 2009
Posts: 507
Likes: 0
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..
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?
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
Thread Starter
Member
Joined: Sep 2011
Posts: 287
Likes: 1
From: NC
Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: a few LT1 swap questions..
Does this look like the bypass that you used?
http://item.mobileweb.ebay.com/viewi...d=271223021636
http://item.mobileweb.ebay.com/viewi...d=271223021636
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