M44 short block is 210lbs. S52 short block is around 300lbs. LS1 is close to the same weight as the S52. The weights are from bmwfans.info. Sounds like the wankel will be the same weight as the S52 swap. __________________ ~Dave~ 98 328ti Morea Grun slicktop 11 128i space gray slicktop 13 JGC WK2 Deep Cherry Search | RealOEM |