Displacement -- Bore x Stroke:
==============================

4.2L (4,196cc) = 92.0 x 78.9 (stock 400E) - **Stroke unconfirmed, but maths work out**
5.0L (4,973cc) = 96.5 x 85.0 (stock 500E)

5.6L (5,547cc) = 96.5 x 94.8 (5.0 block with M117 crank)
5.8L (5,851cc) = 96.5 x 100 (5.0 block with Brabus crank)
6.0L (5,956cc) = 100 x 94.8 (AMG, RENNtech, etc - Standard stroker motor)
6.1L (6,076cc) = 101 x 94.8 (Lorinser)
6.2L (6,197cc) = 102 x 94.8 (Lorinser, RENNtech)
6.2L (6,207cc) = 100 x 98.8 (Carlsson C62, 420hp/313kw, 457tq/620Nm)
6.3L (6,283cc) = 100 x 100  (Rumor is AMG built two rated at 405hp/298kw, 454tq/616Nm, no details available on bore/stroke - ALSO, these may have been badged E63 but only been 6.2L displacement.)
6.4L (6,409cc) = 101 x 100  (Brabus, badged as "6.5")
6.5L (6,537cc) = 102 x 100  (??? - possibly never built)



M119.974 AMG 6.0L engine:
=========================
 
HWA-119-030-03-20 = connecting rod, approx $400 EUR each
HWA-119-030-09-18 = piston, pin, & rings.... approx $800 EUR each
HWA-119-016-18-20 and HWA1190162020 head gaskets - €825 each, Dec-2014
HWA-119-030-03-01 crankshaft is a paltry $6700 EUR
HWA-124-545-07-32 = LH module, est $4000-$5000 EUR


Connecting rod data:
====================

116.96x 4.2L connecting rod length = 138.00 mm
117.96x 5.6L connecting rod length = 154.50 mm

119.960 5.0L connecting rod length = 154.50 mm
119.97x/.98x 4.2L connecting rod length = 149.00 mm (1.82 rod/stroke ratio)
119.97x/.98x 5.0L connecting rod length = 149.00 mm (1.75 rod/stroke ratio)
119.97x/.98x 6.0L connecting rod length = 149.00 mm (1.57 rod/stroke ratio)



===================================
M120 Displacement -- Bore x Stroke:
===================================

6.0L (5,987cc) = 89.0 x 80.2 (stock SL600) 
7.0L (7,055cc) = 91.0 x 90.4 (AMG SL70, LH+ME)
7.3L (7,291cc) = 91.5 x 92.4 (AMG SL73, ME only)
AMG Note 1: Some AMG models were badged SL72, it is unclear if these are 7.0 or 7.3 engines.
AMG Note 2: Photos/decals indicate an AMG S72 was 7,055cc and 525ps/740Nm.
AMG Note 3: AMG apparently only used 2 different crankshafts / stroke for the 7.x engines.

7.0L (6,947cc) = 90.0 x 91.0 (RENNtech SL70)
7.4L (7,414cc) = 91.0 x 95.0 (RENNtech SL74)
7.6L (7,XXXcc) = 9x.x x 9x.x (RENNtech custom one-off SL76 - Merc Enthusiast, March 2003, 497rwhp)
RENNtech note: RENNtech apparently used different / custom crankshafts, not AMG cranks.

6.9L (6,871cc) = 90.0 x 90.0 (Brabus 6.9, rated 509ps/705Nm or 540ps/715Nm)
7.3L (7,258cc) = 91.0 x 93.0 (Brabus 7.3, rated 530ps/754Nm or 582ps/772Nm)
7.4L (7,370cc) = 91.7 x 93.0 (Brabus 7.4S, rated 620ps/800Nm)
Brabus note: CC numbers may vary 2-5cc due to rounding the value of pi (3.14,vs 3.141592)

6.9L (6,898cc) = 89.0 x 92.4 (AMG CLK-GTR, Bosch HMS-6, 631ps)
7.3L (7,291cc) = 91.5 x 92.4 (AMG CLK-GTR, Bosch HMS-6, 664ps)
CLK GTR note: Engine block is not the same as production M120. (?)

Most details on the M120 engines are from this forum thread:
http://www.500eboard.com/forums/showthread.php?t=8566