Yep, hemis w/ more than 4.25" stroke run like crap.  Haven't had any issues w/ my 4.5"x4.5" hemi to speak of. After 15 years of abuse, it finally had enough wear in the bores that I decided to go bigger. Had to buy new pistons anyway, so I took it out another .010".
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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