I bought a new Tundra and it occurred to me there are lots of similarities between its engine and the old ZR1 engine:

1989 zr1
350 cid
3.9" bore x 3.7" stroke
11.0/1
32 valve, quad cam
375 hp at 6000 rpm
370 ft lb @ 4800 rpm

2007 Tundra
351 cid
3.7" bore x 4.0" stroke
10.2/1
32 valve, quad cam
381 hp @ 5600 rpm
401 ft lb @ 3600 rpm

The difference is that one came in a $60k high end performance car, while the other came in a $23k base model truck. It's amazing how much of a paradigm shift there is in 18 years.

Mike

 

the 3UR-FE looks like an intresting egnine! and if its anythuing like the 1UZ-FE and 2UZ-FE it should be bomb proof! be intresting to see what a little boost could do for the Toyota plant.

Chris.

 

Yea, Toyota makes a supercharger kit that maintains the full factory warranty and runs 9 psi boost. Since they are around $7k, not many people have gone this route. The rare one that does is getting low 13's at around 106 mph. I suppose the price isn't so bad when you consider you can get the base model 5.7 trucks for around $23k (with rebates), add the supercharger, and stay around $30k. That's still cheaper than a Lightning but in a newer truck with more power.

My Tundra ran 13.9 at 98 mph stock with only 300 miles on the odo.

The biggest problem with forced induction is the computer and fueling. Nobody really knows much about how the ECU works, what are the limitations, and what the fuel system is capable of. I was considering installing a rear-mount turbo and only running 4 psi boost to be on the safe side.

Mike

 

Mike, i think the Toyoa engines are pretty strong! i think you should beable to stick 8-12psi at the thing!

as you say though its the tuning thats the problem.

Cheers

Chris.