rbohm

as i recall the 300 had a compression ratio of around 9:1, so it will be as easy as using a thicker head gasket. as for the stock pistons, they can handle 10psi boost as long as the air/fuel ratios are controlled.

Brandon587

Id be carful running it with stock tune. It may run too lean. Maybe it will run fine. Either way, I know its kinda costly but a custom tune would be very beneficial even if it would run ok on a stock tune. Once you start to touch adding real power to an engine say with new intakes, cam, exhaust (not just cat back exhaust and a cold air intake lmao) ported heads, ect. A factory tune maybe able to run it, but custom would be much better. Same with a turbo. You don't want it running lean. Get pinging and you beat the carbon off the tops of your pistons, followed by beating piston of your piston, all while being very rough on your connecting rod bearings. Id say 10 is pushing it although it could probably do it. Just remember, more boost on stock N/A engine is a good amount for strain. On bottom end, connecting rods, head, head gasket, head bolts, ect. Im sure you know this all though, so just keep it in mind. Id say 6-8 psi if its a daily. And don't always romp on it (which will be harder and harder as you get more power haha!).

cjcooper92

Will not lowering the compression hurt? I want to do this without any special motor work.

cjcooper92

The turbo I'm looking at is a GT3076
Compressor
Trim 56
Inducer Diamter 57 mm
Exducer Diamter 76.2 mm
A/R 0.6
Turbine
Trim 84
Inducer Diamter 84 mm
Exducer Diamter 60 mm　
A/R 0.82
Fit For
* Perfect for all 6 / 8 cyl 3.0L-5.0L engines

rbohm

lowering the compression, as long as you dont go overboard, actually helps. remember that you are trying to control cylinder pressure, especially at low speeds, to prevent detonation, while improving power. you also need to control the fuel mixture as well, the EFI will be a big help with that.