540-E1B5 a Parrallel Valve or Angle?

[10_Dreamer]

And Will it fit in a rv-10 without to much modification? Maybe some pimples on the cowl?
Thanks!

 

[mahlon_r]

O-540-E1B5 is parallel valve but IO-540-E1B5 is an angle valve engine.
Good Luck,
Mahlon
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