Mercruiser GM V-8 5.0L 305, 5.7L 350, 7.4L 454 Marine Engines Service Manual #9
You will find that the illustrated pronunciation guide is useful.
1992 Mercruiser Installation Manual 3.0L, 4.3L, 5.0L, 5.7L, 7.4L, 8.2L & Diesel
You will appreciate the illustrated reference section in the back.