4.7-liter "i-Force" V8 engine into a SC400

[Sir Charles]

Has anyone swapped a 4.7-liter "i-Force" V8 engine or a 4.7-liter V8 VVT-i into a SC400/300?

 

[Lextreme II]

Wouldnt be too hard. You will need a set custom engine mounts. You also might need to change the headers to SC400 and some wiring for the new engine.

 

[spf_lexus]

Same dimensions as the 1uzfe 4.0 that was originally offered for that car. Only difference specs wise is the bore/stroke on the 4.7. If you plan for a complete 4.7 with OEM ECU and heads it will still fit fine. I'm putting a hybrid 4.7 block... 4.0 head setup in my LS400 with David's motor mount kit. Pretty much a drop in swap in my case but an entire v8 swap isn't much different as far as work involved. Your planning the VVT-i correct?

 

[spdrcr771]

Ok guys this is my first post here. Ive talk to david twice on the phone yrs ago, been on CL hard for last 4mo. This is exactly what i want to do to my 98SC400. How much different is it to do the 4.7vvt-i block on my car. How much different is the stroke on mine than the 4.7. Also is the vvt-i 4.7 a steel or aluminum block.

 

[Lextreme II]

Ok guys this is my first post here. Ive talk to david twice on the phone yrs ago, been on CL hard for last 4mo. This is exactly what i want to do to my 98SC400. How much different is it to do the 4.7vvt-i block on my car. How much different is the stroke on mine than the 4.7. Also is the vvt-i 4.7 a steel or aluminum block.

4.7L 2UZFE is an IRON block and I believe the best combo would be just changing your 4.0 to a 4.7L VVTi. I think the 2uzfe pistons will work on your VVTi heads. Another option would be a 4.7L stroker to a 5.2L VVTi.

 

[spdrcr771]

4.7L 2UZFE is an IRON block and I believe the best combo would be just changing your 4.0 to a 4.7L VVTi. I think the 2uzfe pistons will work on your VVTi heads. Another option would be a 4.7L stroker to a 5.2L VVTi.

So as long as i find a 00-05 4.7 its just a straight block swap. does the oil pans need to be swapped & is the piston a for sure yes or no. i really want to do this. i also found a 58000mi motor for 700.

 

[Lextreme II]

You can get any 2uzfe from 2000 to 2006/07. If new 2uzfe has VVTi oil inlet just plug it up with a 1/4' npt. Newer 2uzfe has oil injectors build in.

 

[spdrcr771]

what kind of hp gain do you think ill see with the vvt-i 4.7. this is what i got now.
full custom cat back 2.25 mandrel bent w/x pipe true duel
srt intake for gs400
TT 3.76 LSD
I dynoed on a mustang dyno the other day got 221hp & 231tq, with a simulated 1/4mi of 14.20 @97. now davegs4 @ cl said that the mustang dyno's are lower than dynojet's by like 15-20%.

also that npt fitting your talkin about, is that an oil line on/or in the block or like a hole in the block that you would tap & put a npt plug in.