The 360 will have more torque than the 340 if both are built equally. Torque is your friend. As far as high revving. I ran my 360 up to 7800rpm every pass for 6 years. Recently rebuilt it to change pistons and heads, and it looked like brand new inside. Thats with a stock standard crank, H-beam rods, and KB pistons. For the record, that 360 is now in my Barracuda with a 340 pie tin