Originally Posted by Mean green 91
Does anyone know the horsepower ratings for the Gt40 upper and lower from the 1993 ford lightning and flow rate?
HP ratings will be variable with whatever engine combo you might have and how it is tuned.
Probably in the 10-20 HP over stock range.
There was/is an intake flow comparison chart posted in this forum somewhere in the past, but it may differ as it is based on using the 302 engine.