Quote:
Originally Posted by Tideland Prius
I don't know but the 4Runner has never been the fuel economy champ. It was running on that... 3.4 litre engine for ages. I'm curious of the new technology can be tuned for extra tq cause right now, the FJ, 4Runner and Tacoma need something more fuel efficient thank the current 4.0 litre.
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That 4.0-litre engine does belong to the GR family (1GR), so why not put on the cylinder head, fancy valvetrain and Dual VVT-i from the 2GR? Unless there is no more room under the hood for it. I read in some thread here that the cylinder head on the 2GR takes up a lot of room, making the 2GR a very tall engine.
