Especially after seeing Jason's pic, that's a big chunk of motor! Natebert's right, they can break. But they do produce a bit of torque as they were the motor offered in Chevy's 4WD 4cyl blazer. And weren't they in the 4cyl 80's Camaros too. Not that thay makes them fast, my dad had a Celebrity with one in it and it didn't move. But you'd need some x-tra torque to move the bigger vehicle. I guess the project has it's ups and downs.