Flywheel advice for a 3RZ 4Runner

[ChildrenOfBodom]

Hey guys, I bought a 2000 4Runner SR5 4WD manual wreck to convert my supercharged 1999 4Runner 2WD into a 4x4/manual. I've already got the ECU, bell housing for R series, etc....

I'm looking for a flywheel before I can start my project. LC engineerings selection is showing a 12 pound and a 35 pound flywheel. I've read that stock is about 24ish pounds.

How badly will I kill my torque with a 12 lb flywheel? Should I just go stock? I'm regeared to 4.56 from 3.91 and on 33" mud terrains. Current performance upgrades for the motor are TRD supercharger (still running 4PSI) K&N intake, LCE header, 2.5" cat, 2.5" pipe (considering 2.25" pipe if it will improve performance)

Thanks guys, I know this isn't much of a 4x4 forum, but you guys know a lot about 3RZ performance. My powerband is boring and slow (no help with the stupid automatic), and doesn't have any decent pickup until about 4k RPM.

Here's a gauge vid of WOT. I made it when I installed the supercharger so my apologies that the camera shys away from the gauge cluster a lot.

You Tube

You Tube

Thanks guys

[Greg_Canada]

More boost, extra fuel... stock flywheel since you've got big meats on it.... then meth injection and 2.5" exhaust...

[ChildrenOfBodom]

Cool. Definitely doing meth injection after the conversion.

Stock flywheel will save me a lot of $$$, thanks.

[Speed Freek]

Yep, good advice, stay stock or go heavy, you dont want a light flywheel for offroading, lightened flywheels are for street trucks where you want faster revs, heavy is better for low end torque and gives a bit more inertia to avoid stalling....

[rednecktaco]

Yea my fidenza on my 4x4 3rz w3.58 gears and 30s. Anything off road meant 4 low. It would bog on steep climbs under 10-15 mph. But never failed me in low range.

Never regretted my decision.