well, it depends what you want out of the truck. If your happy with it how it is then obviously the answer would be no. However if you use the truck to tow, and want more power, or lower EGT's, swapping the turbo may make sense, or if you want to blow the doors off civics at red lights, a turbo might make sense. Just depends what you want out of the truck. Personally i dont see a reason NOT to do it, so if its something that you want, go for it. The fuel will be your limiting factor still though unless your have improvements to the fuel system. A lift pump will not make a huge difference in that regard. Lift pumps take the load of lifting fuel from the tank to the pump off the CP3, but they do not even remotely come close to the output pressure of a CP3, so while they may help along a hurt CP3, its not like your going to support 100 over sticks just by adding a lift pump (not that your saying that, just making a point for clarity)I’m wondering if it is even a good idea to install an aftermarket turbo on a stock LB7? The only thing I have done to my LB7 is install EFI Live tunes and a 5 inch turbo back exhaust. The truck is at 172k miles and runs great.
I have a feeling the answer is no, but just wanted to see others opinions.
I see. I plan to add a few upgrades to my truck in the distance future lol like a built trans. Good to know an aftermarket turbo would roast the stock transmission.
On another note, these turbos with the 64mm, 68mm and so on... Do they require a different sized inlet tube?
The transmission on an LB7 can take about 50 HP over stock reliably. Some push that to 100 over without issue, but personally i think your on borrowed time there. However the failures in the transmission tend to happen more when you hit the go pedal on the highway, since those gears are not built to take that kind of load. You are unlikely to roast the low gears on a mild tune unless you really just beat the hell out of the truck. Bolting a new turbo on is not going to roast your transmission, that is all on your right foot and the 7-8 pounds of goo between your ears. What it will do though is give you the ability to roast the transmission should you make that choice.
It would be better to build the trans first, however depending on your needs for the truck, that is not always required. Were you trying to get more low end torque for towing, the transmission would probably be fine with a aftermarket turbo so long as you were aware of what kind of load you were putting on the truck. However if you want to be more care free with your right foot, a trans build would be a better investment before the turbo.
Lastly, if the goal is sound, and only sound, put a batmo or similar compressor on the factory turbo, add the PPE boost valve and put a metal intake on it, and assuming its not cali emissions, it should be very noticeable even with the windows up. Thats basically what i ran on my 01, except i had a plastic banks intake and even with the music on in the cab i could hear the turbo sing. That setup though did not really make any major performance gains, so its about 500$ for noise. I think i picked up maybe 2 PSI of boost from that whole arrangement.