For a little background on what instgated this topic look at: http://www.peachparts.com/shopforum/showthread.php?threadid=84937&pagenumber=2

I have been researching diesel performance and estimated roughly 200+ horsepower output could be developed by the 617.

Are there much gains in just pocket porting/smoothing the factory iron head? Does anyone know of or have any experience in porting/polishing techniques or advantages with diesel engines? I have a spare engine that I wanted to rebuild. I have the intake and intercooler thing pretty much figured out on paper, but wanted to investigate mods in the stroke/piston and cam/head areas for HP gains.

Anyone?

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'85 300SD 'Otto' new to us Sept. '07
'82 300SD 'Jurgen' (July '06 fan shaft broke, toasted rad, 3am in the morning 60km from home, walked 16km hitchhiking.... )
'70 SS Chevelle (finally back on my property, in the shop on stands)



"The thinking required to solve a problem cannot be the same thinking used to create it!"-Einstien