that is rather interesting
just an FYI the early 273's used a different intake than the 318's
Yep, I believe drilling the mounting holes a bit larger diameter solved that problem, it seems to me the threaded holes in the 273 and the 318 heads were at a slightly different angles. Opening up the holes on the intake allowed the bolts to be threaded into the heads and the slight difference in the angles didn't cause any sealing issues. But it was a long time ago.
also, didn't the early 273's use 5/16" bolts as opposed to the 318 using 3/8" bolts ?
i may be wrong on this, not that i have been wrong in the past......
if so, will someone please correct me ?
