[Sack Rat 2SS]

[QUOTE=383ss;639276]no offense, but those seem weak for a 427. I would have expected 550rwhp+, but I don't know any details on the motor either.

383ss -The 427 LS-7 factory engine installed in the ZO-6 is 505 flywheel HP and does close to 425 rwhp on the dyno. So you think 100+ rwhp increase at 528rwhp is weak?? That is over 620HP at flywheel or another 115HP. Not that 550+ cannot be done but I think you have very high expectations. Plus the LS-7 is already a very high performance engine so taking it even higher is a challenge. Just my 2 cents.