I've noticed the frequent comments about the lack of data concerning the tb mod. I'm still z green compared to most regulars here but I found some old SGP numbers from the faq. In the z glossary definition of stage there is this: Stage VIII JWT dual POP charger 510-525 hp 15 psi Stage IX Ported throttle bodies & Matched intake 515-530 hp 15 psi
Not knowing the history or where these number originated this is not worthless.
Follow Ups
? bored throttle body worth any power ? -- data - shaggee13:57:17 06/29/13