Has anyone installed or know of any isntallations of the 460 engine and trans in a 1994 LS400?
Does anyone know of a mechanic or a shop in So. Calif who has experience with engine/tranny swaps in Lexus cars?

 

Welcome.

All a matter of money and time. I've pondered this as well but our LS isn't that level a project car so it remains an amusing thought. Call some shops, measure up and see what some of the shops say what will need to be fabbed.

 

lol, got ~$25-30,000?

engine
trans
ecu
body harness
custom mounts
custom d/s
MASSIVE custom harness
labor for all of the work (esp. the wiring).

 

That's not very far off, unfortunately. The list price of a complete motor from Lexus, I know you won't buy it from them, but just for our sake, it's $23,000, which doesn't include any of the harness, modules, exhaust, etc. On top of that, the book time for removing a 4.6 from an LS460 is 30 hours. I would be willing to bet that the time would almost double considering your puting a engine in a vehicle that was never deisgned for it. Good luck.

 

Somebody who's has $ or just plain whacked will do it just for the challenge.

 

The 4.6 is a lousy motor to go through the effort of putting into your car anyway. It's flimsy and cheap. The best motor is your 1UZ-FE - you just need to wake it up with forced induction.

 

for the money you would spend on the 4.6 you could have a fully built 1uz with forced induction and 500hp+ and some cash left over for other goodies. It would be a fun idea if you had a fab shop at your own disposal and could do all the work your self and found a 4.6 for real cheap, like less than $2000. Because even after that your still going to be looking at 5k+ to get it running....

 

Don't know much about the 4.6L but how is it "flimsy and cheap"?

 

What tranny would be mated to the 1UR-FSE?

 

failing camshafts (tundra bored-out model), failing valvetrain (LS, GS460), very thin rods, open-deck block design. i don't think it even has a 6-bolt main like its UZ predecessor.

 

Complete waste of time.

Just give your 1UZ an overhaul and supercharge.