Quote:
Originally Posted by XfireZ51
Lee,
=Jeff= has done this conversion. He felt it would be a way of getting the benefit of porting the top end without the porting. In doing the calc for the area of a circle, it comes out to 89% and since the volume of a cylinder is the area x the height, the % holds. Obviously the plenum would need to match the flow.
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I did 93-95 on a 90-92.. so the opposite of what Lee wants if I read it right
I added the plugs to the 93 IH as well to work on my 90.
I also have a later model plenum too