There's some info on the engine of the 300SE/SEL cars here:
http://www.peachparts.com/shopforum/showthread.php?threadid=79486&perpage=15&pagenumber=2

__________________
past MB rides:
'68 220D
'68 220D(another one)
'67 230
'84 SD
Current rides:
'06 Lexus RX330
'93 Ford F-250
'96 Corvette
'99 Polaris 700 RMK sled
2011 Polaris Assault
'86 Yamaha TT350(good 'ol thumper)