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I have a Coyote powered GT.. They are a very wide engine for transplants.. Mild tune can make 360 to 380 RWKW..

Check that fuel pump is up to fuel supply at the higher fuel pressure ..

Water / meth injection helps but doesn't help if injectors are way too small.. Just helps keep Pistons living, detonation away .

We made our own ..

Couldn't have said it better ..

if you can fabricate your own inlet, exhaust which imo isn't that hard.. The 4.0 has more throttle response and possibly lighter , can be recessed back in engine bay.. Keep bore liners strong, only bore if you have to.. What have you done as its been some time now ?

Turbo power ..

I've used timing belts to hold exhaust.

What's the spigot bearing like ? Was it supporting the shaft ? I'm sure there are stronger parts which can be fitted ..

Yes me too .. That why I'm building 1UZ also .. With Powerglide, T brake , two step takes some beating ..,

AT400 would make it 2 seconds faster and more consistent . I have TKO 600 in another turbo V8.. Manuals are tricky at consistent 1/4 times

As long as the extra breathing doesn't peg the air meter it should self tune itself .. Or have too much duration to drop vacuum, effecting idle ..

It's often bout finances too.. It's easier to go to the bank and ask for money for a new car.. Going to the bank for repairers is full of security issues .. Check out most you pull wreckers ? Seems plenty of drivable cars there ? I would guess a head gasket has blown ? Got a quote from...

There's been some serious UZ motors built in NZ as they have 4.0 (stock car) limit there . Mega bucks spent . Be nice to get info on one of these builds . Talking to the guys at Kelford . Just short of 500h.p with single carb ..

Retired myself .. Never been so busy .. May change when I have my hip operation though.. All the best Rod..

Having worked on another turbo 4.0 Aust 6 cyl .E85 with forced induction is very safe .. Going from C10 to E85 it made an extra 100 h.p .. The 1UZ would be the same .. Tune is king for engine durability ..

The weather doesn't help .. Hmm it's going to be expensive ? I don't think there's a straight bolt on head.. Other than CNC machining .. Look to compare ? 2j or Fords Miami heads ..

One good thing is the GM ECU can be TUNED . Some have UZ's running on these ECU's .. The timing NEEDS plenty retard during its peak torque which the NA tune simply DOES NOT do ., the other option to leave the Std ECU for idle control and stand alone for fuel / timing .. Finding or using a GOOD...

Must ask.. Why keep std ECU ? When Aust has some of the best ECU's right here.. MB twin turbo V6 ? But then we could build a forged Toyota V6 with two (or single) turbo? Maybe the new variable vane type? It's not always the engine alone.. It's the package.. My daily is a Coyotee .. Can't...

No wander things have been quiet at your place.. Get well and better ...