When my friend installed an SDS EFI system on a turbo Corvair, he used the stock carb as a throttle body. Dyno tested it.
Then he removed all of the venturi & other BS in the way of airflow, then dyno tested that.
IIRC, the engine went from 6 psi to 12 psi of boost pressure. Which made a lot more power also.
The way GM purposely kept the boost down was to use such a small carb to restrict airflow & also use a restrictive muffler.
There was no wastegate to control boost pressure. Also the A/R on the turbine housing was made too big, so it would not build boost, it would build boost in 2nd gear.
Just saying the carbs are small. The biggest engine for the Corvair was 2.7 liter. The carb can be modded to be made bigger, but not a whole lot bigger.
MBHD
