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Swapping LT1 for LS1 in 1995 Trans Am

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Old Oct 1, 2014 | 07:27 AM
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xEzekial's Avatar
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From: Fayetteville, NC
Default Swapping LT1 for LS1 in 1995 Trans Am

I moved this thread from it's original location under Paint/Body Modification since I'm more interested in the mechanical challenges that lie ahead.

Here's some photos of my car from when I bought it last year:



Meet Alice. This is my latest F-Body.





This is a 1995 Trans Am. Red exterior and red leather interior. This car now has 93k miles on it (and going up fast because I'm driving the crap out of it). It's in excellent condition given that it's 19 years old. I was on a tight budget when I bought this car. Having only paid $4700 for her, I feel like I did pretty good since almost everything works. All in all I feel like it was a great buy. Especially now after the plans I've come up with for this car.


- Engine swap: Dumping the LT1 in favor of an LS1. I'm going to have the engine built before dropping it in.
- Transmission: T56 swap. The Borg Warner is going away for the newer Tremec T56.
- Rear End: Moser 9" and a new driveshaft too
- Weld in Subframe Connectors. I'm sure I'll do other suspension stuff too once I decide what I want.
- Brakes: Corvette Brakes conversion I should be able to get the hookup on this.
- Exhaust: Resonator muffler(s) and pipes (SLP?), getting rid of the Rustmaster that's there and the stock pipes. SLP Longtubes? I guess it depends on the power adder.
- Body parts swap. Ditching the 93-97 parts in favor of 98-02 parts.
- Honeycomb tail light swap, nuff said.
- "CETA" painted rear bumper.
- WS6 Hood
- LS7 Clutch and LS2 Flywheel? I think that was the popular choice back when I had my old one.
- 18" C6 wheels/tires by OE Wheels in Black (? this is still up in the air)
- 97+ center console swap, since the pre-97 console sucks!
- Window tint... dark
- Replacement speakers, old ones are blown
- New Head Unit with Nav, requires double-din conversion. My buddy's came out great. I already bought a Sony single slot head unit that does everything it just doesn't look as nice. This will be the absolute last mod.

Just wondering what all is going to need to be done once I'm ready for the swap. Any big obstacles to overcome from anyone that has done this? I'm trying to buy a red donor (wrecked) car sometime over the next few months and I will park them beside each other in the shop to do the swap. The result will be a 1995 Trans Am that can't be emission tested that is still a 98+ mechanically.
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Old Oct 3, 2014 | 03:32 AM
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Originally Posted by xEzekial
I moved this thread from it's original location under Paint/Body Modification since I'm more interested in the mechanical challenges that lie ahead.

Here's some photos of my car from when I bought it last year:



Meet Alice. This is my latest F-Body.





This is a 1995 Trans Am. Red exterior and red leather interior. This car now has 93k miles on it (and going up fast because I'm driving the crap out of it). It's in excellent condition given that it's 19 years old. I was on a tight budget when I bought this car. Having only paid $4700 for her, I feel like I did pretty good since almost everything works. All in all I feel like it was a great buy. Especially now after the plans I've come up with for this car.


- Engine swap: Dumping the LT1 in favor of an LS1. I'm going to have the engine built before dropping it in.
- Transmission: T56 swap. The Borg Warner is going away for the newer Tremec T56.
- Rear End: Moser 9" and a new driveshaft too
- Weld in Subframe Connectors. I'm sure I'll do other suspension stuff too once I decide what I want.
- Brakes: Corvette Brakes conversion I should be able to get the hookup on this.
- Exhaust: Resonator muffler(s) and pipes (SLP?), getting rid of the Rustmaster that's there and the stock pipes. SLP Longtubes? I guess it depends on the power adder.
- Body parts swap. Ditching the 93-97 parts in favor of 98-02 parts.
- Honeycomb tail light swap, nuff said.
- "CETA" painted rear bumper.
- WS6 Hood
- LS7 Clutch and LS2 Flywheel? I think that was the popular choice back when I had my old one.
- 18" C6 wheels/tires by OE Wheels in Black (? this is still up in the air)
- 97+ center console swap, since the pre-97 console sucks!
- Window tint... dark
- Replacement speakers, old ones are blown
- New Head Unit with Nav, requires double-din conversion. My buddy's came out great. I already bought a Sony single slot head unit that does everything it just doesn't look as nice. This will be the absolute last mod.

Just wondering what all is going to need to be done once I'm ready for the swap. Any big obstacles to overcome from anyone that has done this? I'm trying to buy a red donor (wrecked) car sometime over the next few months and I will park them beside each other in the shop to do the swap. The result will be a 1995 Trans Am that can't be emission tested that is still a 98+ mechanically.
If you have a donor car, just unbolt the front subframe and bolt the whole shebang into the lt1 car.

For wiring there are only 20-30? maybe fewer wires you need to hook up to combine the lt1 body harness with the ls1 wiring harness.

The rest is just hood clearance/intake and I think that's it, but there are plenty of threads on people doing the swap. It's easy if you have a donor car. Don't get rid of the donor car until everything on your car is running.
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