[Garnet]

I'd like a bit more power and better fuel economy out of my 2005. I had originally been thinking of doing a 5.7l swap, but would really like the added fuel economy of the 4.6l paired with the 6spd transmission.
Does anyone have any experience doing this swap? Easier, the same, or more difficult than a 5.7l swap?



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[cheapskate]

Pretty sure the 4.6 and 5.7 are the same block and if thats the case wouldnt install be exactly the same?
That being said are you sure this is even worth it? If your motor was screwed and you have to replace it then maybe, but if you are doing this just for the fuel savings I would think the cost of the fuel savings would be long swallowed up by the cost of the swap. You would need to replace not just the motor but all the wiring, ecu's etc. and make it try to connect to your truck.

 

[Garnet]

Yeah, I realize that it will be labour intensive. I love the first gen quad cab though. I'd rather put some time and money into making this truck ideal rather than buy something newer. It's the perfect size, and I love having a 6.5' box with a roll down window. I'm a contractor and get a ton of use out of the roll down rear window. The 2nd gen quad cab tundras only have a 5.5' box. Not nearly as useful for me.
I put about 3000kms a month on my truck, much of that is hauling, so the fuel savings and power increase would be worth it.

I didn't realize the 5.7 and 4.6 used the same block. Thanks for that information!