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Help! What Garrett Turbo and hardware for 99 S70T5 build? 500-700hp


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Hi everyone. I have not been on in some years. I had started a build in 2019 on my s70 after the head gasket blew. My goal was to have a vehicle producing between 500-700hp at the wheels. I bought forged connecting rods and pistons, as well as inconel valves and Darton Sleeves. Also bought a quaife lsd and stage 3 clutch. I had a td05 20g turbo, but i ended up selling it. I got the block machined, and the internals installed. Covid hit during the middle of all of that, and the project has been sidelined or slow going ever since. I want to put a Garrett turbocharger on the engine, specifically a gtx3582, as I can achieve the power numbers I am looking for with that turbo. Alternatively, I am looking at gtx3076. Regardless of which one I get, what hardware will I need to get to install this on the engine and downpipe? My downpipe is an obx, with full obx exhaust. Also going to get a hilton tune. I would really appreciate you alls help with this, as I have never done something like this.

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  • EastsideR changed the title to Help! What Garrett Turbo and hardware for 99 S70T5 build? 500-700hp

What injectors? Any head work, improved intercooler, etc?

The GTX35 will do it, but you will be closer to 4000 for it to come on boost.

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