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Re: 2JZ vs LSx, opinions, knowledge, and of course the smart (*& comments too.
2JZ is very heavy. It isn't the most efficient motor ever, not so great mpg and a not the best head design ever. You can get around it by cramming shit load of boost down it like every one with a Supra does and make all kinds of power. Cams and aftermarket intake manifold can help them a lot. They can handle all kinds of power in stock form, if it's an older motor. The newer IS300 2JZ motor has a better head and VVTI, but a weak bottom end. You can also run the NA version of the 2JZ, you just need to buy a Cometic HG for it to lower the compression. Throwing in a stock GTE headgasket will also lower the compression on that motor a decent amount, but not enough to make me happy on pump gas at higher boost. It would probably be decent for E85, but a Cometic doesn't cost much more than a stock HG anyways. The GTE is COP vs a distributor on the GE motor too. The distributor can get in the way for big turbos that run a 5" inlet, if you are running an intake pipe.
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