Hi Jim,
I'm not sure what the factory dimensions are, so I cannot answer that for sure. If I had to guess though, I would say yes. I moved the exhaust as close as I dare possible towards the cylinder and moved the intake away as far as possible from the cylinder wall.
The valve sizes for the street versions are 2.20" intake and 1.68" exhaust and will bolt on to a 4.190" bore comfortably. I actually designed the valve locations on a 4.150" bore, but the valves are a little to close for my liking. They will clear, but with no wiggle room LOL.(Mostly the exhaust).
The race version are going to be 2.40"-2.45" intake and 1.65" exhaust, and will require a larger bore.
There is plenty of material around the bowls for porting. The short turns will have about .275" under them. The roof on the exhaust has plenty of room, but the roof at the entry of the intake will only have about .250". There is plenty of room under the valve springs as well.
In other words, there is plenty of room to grow if someone desires LOL.
Don Johnston
DCI MOTORSPORTS INC.
330-850-5050 Shop
330-628-3354 cell
Designer of the DCI Tiger Heads and the NEW DCI Ram Air V heads !!!!!!
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