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thinking about buying a car with dss 306 holley stage 3 heads z303 cam and edel II intake with s trim owner does not know the hp never has it tuned or anything but says it runs good everything is new how much power u think it is doing on 10psi right now? and i also wanted to know how much boost can a s trim make max with out upgrading internals just changing pulley pipe and boost cooler? thanks
also is that a good set up?
Set up sounds pretty good. Vortech says that the S-Trim is good for 20 lbs. of boost.
A car with that set up should at least go low 11's. Probably makes 450-500 hp. (If it is tuned right). Make sure it has an adequate fuel and ignition system. What controls the engine management? (PMS, Chip, etc...)
Good Luck!
My s-trim with a 2.95/6.87 and 3.33/8" both made 18 psi.