Project 300 SRT8 Turbo build and TH400 install

Vehicle: Chrysler 300 SRT8


This 300 belongs to David R. He came to us wanting to take his build to the next level. He always enjoys standing out and being different. But at the same time he want something that is functional, reliable, and will perform.

He previously had a P1 Procharger blower running e85 at low boost. While running that setup he already hurt his trans.

So the decision was made that he wanted a transmission that can handle any beating he threw at it. The most common trans for that job would be a th400. Being a modern Mopar, it will require some custom fabbing and pieces to make sure it bolts up correctly. So we will document the build as we go.

On top of the fact we are going to beef up the trans, David wanted a little more power as well. His blower was pretty much tapped out. That being said the next piece of the puzzle will be throwing in a Borg Warner S475 turbo. that's all we will give you for now. Stay tuned as we progress with this build.

Future MODS:
-Underground Autosports 300 Single Turbo kit with S475 turbo
-ID1000 injectors
-Walbro 450lph single pump
-Customer TH400 build
-Customer Converter ( specs to be determined)
-Customer Driveshaft
-Getrag 3.73 Rear end
-DSS axle upgrades
-Customer Track pack ( to be determined)
-Complete Air Ride system

This is a shot of the day the car was dropped off.

This is the engine bay as she came in as well

Keep checking back as we will update this Blog as we progress through the build.