I am currently do a full restoration/build on a 66 2dr Impala. I am going to be dropping in a LQ4 (very similar to a LS2) and a 4l80e transmission. I am hoping to have about 500hp to the wheels. Do you think the frame in a factory state will handle that much power? If not, what do you recommend to stiffen? Thank you!
The original frame was built to handle a 450 horsepower 427 BBC so the smaller 366 cube LQ4 (6 liter) wouldn't tax the original frames strength. However a half century of corrosion could. So it will depend upon your frame's condition.