EST Distributor

[Bob Wooten]

Questions #2, I think also another simple question.

what is meant by EST?  I have a 91 Camaro that has an EST distributor (so
says Mr. Chilton).  what I have noticed, & I am guessing but want to clear
it up is that EST is more a scheme than anything.  this means that the
Distributor controls the spark duties w/the small input from the ECM for
retard & LHM.  this means that the distributor conditions the PU coil, has
the driver in it for the HV coil & outputs a signal that is used to
determine RPM.

another guess is that all the EST setups do not have any Vac or Mech advance
to them, but?????  I noticed that the 8 eng coded 91 has the "standard" HEI
setup & I think (I don't have it so....) that it does have both Mech & Vac
advance on it still.


thanks for clearing that up.  here comes #3.

Bob Wooten
r71chevy at earthlink.net
www.r71camaro.homestead.com

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