JGill1992

Hey Ive been thinking about mods for my car (2005 gt auto) I'm ready to get a TCI 3,000rpm stall torque converter and 4.10 or 4.30 gears. Will this hurt my car? Will it be extreme extra wear on the engine and transmission? The car JUST hit 40k miles and it's been WELL taken care of but every great once in a wile I have to travel (800+ miles) on the interstate. Is that going to kill my car? I don't care about MPG at all so that's not an issue. I just don't want to destroy my car.

Derf00

4.10 should be ok but keep in mind the auto's have a shorter first gear than the manuals. 4.30... is over kill. you'll never have traction in first gear (or second) if you punch it out of the hole or from under 10mph.

JGill1992

I thought that might be the case. Thanks for the info

outceltj

Your car will be fine with 410s and a torque convertor. I have that and twins crew. If u do go this route u will need a trans catch can. The reason why is bc when ur tranny oil heats up it drains out onto the bell housing underneath the car. Poor design but easy fix. Jdm sells a nice trans catch can.

And as far as wear and tear on your car. If ur good with Maintenance u will be fine