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I am thinking about installing an MMI Twin Turbo Kit on my truck. It already has a 4L80E transmission. The kit is on amazon. Anyway, what I am wanting is help on what else I will need to buy with the kit. I know I will need bigger injectors, I just dont know how many lbs/hr. I also plan on installing a high flow oil pump with this kit as well. I will be getting it tuned on a dyno after the install. I also plan on replacing the head gaskets, intake gaskets, and lifters at the same time. Thinking about a cam, but not sure where to go with that either. Looking for any advice that I can get. I am wanting to put around 600 horsepower to the ground. Not trying to get too crazy with the boost.
I purchased my 03 SS in January of 15' and it has always shifted a little slow, it hasn't gotten much worse since I flushed it and added lucas tranny stop slip to it. But the 2nd to 3rd shift is still not very healthy. I'm wondering if anyone has rebuilt these transmissions? I thought about maybe putting a very mild shift kit in as well when I have it all apart. I need suggestions on what rebuild kit to purchase, and any advice to which shift kit to install, or if thats a bad idea. I do body work for a living, but I have a very skilled mechanic friend who will be helping who has rebuilt a few transmissions before.