Transmission Safe RWHP

[ryu750]

What is a safe amount of RWHP for the Automatic Transmission to Handle on the IS300s?

[TSopranoIS300]

on a non modified transmission? 350 ish

there are valvebody upgrades...and people replaced the clutch packs/sprag gears.....I've seen people break their transmissions with 300 HP....its varies

[ryu750]

THanx..

[VroomRollLex]

clutch packs? you mean the actual clutch? or torque converter? well either way, most of the work is time consuming....if your mechanically inclined its still a tough task, (if its your first time at least)