Bp, I did notice that the 44 and 444 heads have different part #'s. Are you sure the 277 does not have the shroud? I am not questioning you but I am building a pulling engine and would like to know about the 277 head not having the shroud around the valve. I have heard many stories that only the LP was unshrouded both 260 and 277. I have also heard that all heads are the same and the only difference are the valve seats between LP and gas. I would really like to know 100% positive that the 277 does not have the shroud.
Thanks, Curtis Elliott