thanks, i'm not afraid to try 10psi thats what the blower motor runs maybe just a tad more. i've only had one head gasket failure and after that i retorqued my head a couple times just letting it warm up then torquing it down agian. its been good for at least 30 k miles and some WFO runs. so yes id be in for trying 10 psi. i'm not sure of my static compression right now i have what is called a large port head but i've got to get it to the machine shop to confirm its good and have it rebuilt. so the combustion chambers are different so we have different cc measurements and different static conp. years ago it was explained to me buy a blower builder that you want to keep your static com. low and bring it up to to produce strong power with your boost. the ability to pump more air and fuel into the cyl. is where the power is. you'll get more effective hp out of 6.5 static comp. than you will 9.5 comp. you can pump more fuel and air into 6.5 for an effective ratio of say 10-1. you can't put much in if its allready at 9.5. BACK to turbos, so i can regulate my boost with the wastegate to 10 psi and still use a turbo of this specification? sorry for the questions, i'm just trying to sort this out in my mind and its worn out.
PS i use to have somewhere a book from BDS, Blower Drive Service that had a chart that took your static comp. and showed how it increased in actual comp. from pounds of boost, i can't seam to find it right now i'm still searching. they helped me a lot with my blower setup, GOOD people!!!
Jay D.

Last edited by jay d; 06/18/2024 9:20 PM.