note that 99% of all vendors show you flywheel hp...and that's at best...i have high regards for mti so i assume that is close to corect hp rating...now slp on the other hand...

 

asssuming 15% driveline decrease from a manual that's closer to 400rwhp...and expect prolly 380-390 from a automatic...

 

That 475 i believe is too the crank. If you want to spend that much money on that and have the money, then go for it. They are a good company.

 

Yeah i know its most likely flywheel. What about the engine packages from ls1speed.com? The f-body sportsman 382 and 348 cost a little bit more, but they look like they come with a lot more than the mti package. (427 extreme is tooo expensive) Anybody know how much horsepower these packages will crank out??