Re: Vortec FI

[gerhardr@yahoo.com]

 > But is the factory TBI?  I guess not if it requires 60 psi.  

I was under the hood of a '94 Vortec 4300 S-10 Blazer the other 
day.  It definitely is not TBI; it uses a central injection system.  The 
switching mechanisms are in a central block almost (almost!) akin 
to on a Diesel engine, and lines run from this injection block to the 
injectors.

I do not fully understand the system itself or how it differs from MPI 
or SMPI, but it is not a throttle-body concept at all.


   - Jared Ryan [gerhardr@yahoo.com]
  ICQ #8547412 Yahoo! Pager gerhardr
"Lead, follow, or get out of the way."