Hang on here!
You guys arnt getting it. Let me try to explain better.
All the valves with in a single head among the modular and old windsors are exactly in line. In other words,... if the valves where connect the dots....you would have drawn a straight line. Were as the TFS heads intake and exhaust valves are opposing, creating two parallel lines, but with a tad bit of seperation from a median line.
Modular tfs heads:
Connect the dots straight line with intake valves. Connect the dots straight line with exhaust valves. Two separate parallel, connected the dots straight lines.
So them little roller bearings in the followers residing under the cam....now sit a tad bit off distance from each other. Meaning intake roller sits to the left a little and exhaust sits to the right a little, but not a dead straight line like a stock modular.
Ask questions please