GM-HEI Modules

[Squash]

I just bought an Accell blue-print ditributor that fits an '83 305 chevy
truck.  It uses that same 4-pin module as the 70's era HEIs.  this is a
coil-in-cap unit.  I can vary my timing from 0 to about 40 degrees with
the ECU.  There is a 4-pin connector coming out of the distributor.  I'm
not sure what signals are on there, but i might be able to find out. 
I'm sure that one is a tach signal.
-- 
Andy Quaas