EST to HEI Conversion
Page created by T Sep 9th 2008:
EST to HEI Conversion:
Existing EST Wiring:
The Coil +ve is already wired to +12v via the Ignition Switch (pink wire). The Coil -ve is switched by the ECU (black wire).
1. The pink Wire from the Distributor and the existing pink Wire connect to the Coil +ve.
2. Remove the black Wire from the Coil -ve and terminate it so that it cannot make contact with anything. This is no longer used.
3. Connect the green Wire from the Distributor to the Coil -ve.
4. Connect the Tachometer Wire to the Coil -ve. This Wire is usually brown in colour.
hiy_po on Tue, 09/09/2008 - 14:00.
I just took the Black wire off the Coil, Dropped in the HEI Dissy, Put the green wire from dissy to -ve coil pink wire from dissy to +ve coil.
EST is disconnected and engine runs on HEI
Vacuum Advance Line:
tee the vac advance into the egr vac line it might be a different size but its ported.
===Tachometer Connection:===The Tachometer Connection goes to the Coil -ve.