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Old 05-10-2020, 01:41 PM   #1
Chickeneatman
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Join Date: Aug 2019
Drives: 2013 FR-S Ultramarine
Location: MN
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My 'Sloppy Stage 2' 4.8 swap FRS

Hello all, I believe it is time for me to properly introduce my project.
In July of 2019 I bought my 2013 FRS. It had a rebuilt title, but had paperwork for the inspection. I got a good deal, and promptly started building it for STX class for AutoCross.
Then in September the SCCA had their 'Track Night in America' at a local tech school with a very large driving range. I brought my FRS equipped with headers, E85 tune, 245/40/17 RE71Rs, and front camber bolts.
I had a decent amount of AutoX experience, but this was my first proper track experience. 15 minutes into the 3rd and final session, I over cooked my tires and lost it into a pole that was placed very poorly right next to the track.

(More details here. I made a video about the crash and my plan)



About a month after the crash I found a really good deal on a clean BRZ limited with rod knock. I loaded up my truck and trailer and picked it up. I swapped the motor from the FRS to the BRZ, and daily drove the BRZ for the next 8 months.

Unfortunately that leaves me with a smashed up chassis, and no engine. Then shows up my buddy with a 4.8 laying around and some stock GTO parts. $400 dollars later I had a motor and a plan.

So here is my 'Sloppy Stage 2 LS Swap'



Motor is a gen3 4.8 out of a 99 Silverado. I am planning on pairing it with an AR-5 transmission using the Fabbot stage 2 adapter kit. I had new valves and valve springs put in when the heads were machined. I am planning on using primarily GTO accessories. I will control the motor with an E40 ecu out of an 05 Envoy. This will give me access to a canbus system, but not force me to run with the 58x reluctor wheel. I will use the AGT Engineering Wire-in Translator for the canbus.

I could go into more details about all the little parts needed, but there are plenty of very well documented LS swaps already out there.

I would like to eventually turn this car into a Ute, but my primary goal is to make it drivable.

Anyone know a good A/C solution? how much of the OE FRS parts can I use?


Constructive criticism is very welcome on the videos.
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