M117 engines and HP

[subforry]

I was looking through my copy of Illustrated Buyer's Guide, Mercedes -Benz and noticed the M117.984 (in my 280SE) is stated as 230 SAE HP. The M117.982 (from a 450SL) is stated as 180 SAE HP.


Are these numbers correct? What causes the lower HP? Cams, compression, fuel delivery?


I am asking because I have a line on a long block from a 450SL that I was thinking of buying, but if there is a loss of 50 HP that I cannot reclaim with parts from my M117.984, then I am not interested.


Thanks.