1984-1985 Production Block 3.8 Liter
Casting number 25520329
TOP
RIGHT
Features of Note:
- Notice the lifter valley is cast and the oil drain back is accomplished through rough openings (as opposed to later blocks which have a smooth casting here with holes drilled
- Notice the knock sensor provision ( hole on left side of picture)
- Notice more pronounced casting between lifter bores
Features of Note:
- Notice the four bolt holes per cylinder
FRONT
BOTTOM
Features of Note:
- Notice no turbo oil return line hole or even a boss cast for one
- Notice no "ribs" in the upper valley casting like the later blocks
Features of Note:
- Notice that if you look carefully you can really see the large "ragged" openings in the lifter valley for oil drain back
- Notice only 14 bolts in the oil pan rail
- Notice slightly different angle of the oil pickup
- Notice how the oil pan rails are slightly thinner than the later blocks (especially around the webs)
TOP
RIGHT
Features of Note:
- Notice the lifter valley is cast and the oil drain back is accomplished through rough openings (as opposed to later blocks which have a smooth casting here with holes drilled
- Notice the knock sensor provision ( hole on left side of picture)
- Notice more pronounced casting between lifter bores
Features of Note:
- Notice the four bolt holes per cylinder
FRONT
BOTTOM
Features of Note:
- Notice no turbo oil return line hole or even a boss cast for one
- Notice no "ribs" in the upper valley casting like the later blocks
Features of Note:
- Notice that if you look carefully you can really see the large "ragged" openings in the lifter valley for oil drain back
- Notice only 14 bolts in the oil pan rail
- Notice slightly different angle of the oil pickup
- Notice how the oil pan rails are slightly thinner than the later blocks (especially around the webs)