im getting my o2 SS dynoed pretty soon and im hoping for around 330-340 RWHP, i have an SLP lid, bellows, ram air, ported MAF, LT headers, ORY pipe, and a magnaflow catback. My friend dynoed 323 RWHP with , lid, headers, and ORY pipe, so im hoping my few extra mods will get me over, 330. I cant wait until i get my heads and cam from TSP in about two months, they told me i will see 100+ RWHP gain. And for the T56 transmission, parasitic loss is about 12.35% just in case you any of you were wondering, so 345crank HP with drivetrain loss would be 307 RWHP. Any year LS1 will see 290-315 RWHP stock.

 

Yep, manuals lose less...the 4L60e is around 18%ish