403 Turbo suggestions?

[andrewb70]

Personally, I think most people get too carried away when building turbo engines. I am slowly doing some research and as I read various posts and see the various dyno sheets I realize that most people run turbos that are way too big. This is understandable if you want to drag race the car, as most people on LS1tech tend to do. But for our purposes and for street driving, you are way better off with a smaller, more responsive turbo.

I learned a lot by playing with the Borg Warner Airwerks MatchBot. There are some excellent tutorials on how to use it.

Here is a combination that I picked out for a 6.2L with a pair of fairly small turbos:

6.2L twins

Notice the boost curve and the RPM where it comes in. The engine will be a torque monster. Personally, that is what I want in a turbo engine. The great thing about the AirWerks calculator is that it lets you match the turbine wheel and housing to estimate how responsive the combination will be.



Andrew