Quote:
Originally Posted by Greg095
I would think so. The question I would have....... where does the new fuel injector get installed?
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Under 10 pounds of boost you can normally get away with the stock injectors as long as you upgrade the pump.
Even the stock cams are more than enough at under 10 pounds.
Another thing to consider is your stock compression ratio.
3.5 engines come in at 10.1. This means you can safely run 5 pounds of boost on stock internals and upgrading the fuel pump. 7 pounds is possible as long as you or someone you know can tune it properly. This is possible now since the diablo tuner has been released for the 3.5 engines.
My brother has been wanting to make a turbo system for my 3.5 but I always tell him the same thing, unless someone makes lower comp pistons or we get our own forged, I'm not even gonna try it if I'm gonna max out at 7. I'd rather max at 9 or 10. Every pound helps in a turbo.
I looked at the supercharger kit by tkt. I forgot who did it, but the last time I read he maxed out at 3.xx psi. This is a very low gain in my opinion as you still have to overcome the parasitic loss of the belt on the pulley system.
At 5 or 7 pounds of boost on the 3.5 with stock internals, the best setup I can think of is a sequential twin turbo. This allows you to boost at low rpms increasing torque and then having a second turbo take over at higher rpms increasing top end.
But even that runs up the numbers as you have to buy two turbos over one as well as two wastegates and all other parts needed.
Bottom line is the safer and best bet would be to get a turbo system, nothing belt driven. Anything belt driven (classified as supercharger) has substantial parasitic loss and simply hurts you in the long run for power. But until we get at least some lower comp pistons, we will be stuck at 7 pounds max safely.