GM HEI Olds/Chevy Wiring Compatibility

[Joe Boucher]

A GM HEI is a GM HEI no matter what car it is on.  Are you trying to match
different year types?  Regardless, if you match the wires it should work.

Joe Boucher
'70 RS/SS Camaro  '81 TBI Suburban

Zachary Zehnacker wrote:

>         We are putting an Accel DFI ECU on an Olds 455.  We have the Olds
> computer controlled HEI that we would like to control with the Accel ECU.
> The ECU is setup for a chevy HEI with the 4 pin weatherpack plug.  The
> Olds HEI also has the 4 pin weatherpack plug, however it is keyed
> differently and has the female pins instead of the male point pins the
> Accel plug is expecting.  We have the original plug that mates with the
> Olds HEI and would like to put it on the Accel harness.  Will the 4 wires
> match up?  The plugs are labeled A to D.  Can we just take the A from the
> Accel plug and wire it to the A of the Olds plug and do the same for the
> rest of the letters or do some of the wires need to be swapped around?
>
>         Thanks!
>                 Zachary Zehnacker
>                 zzehnack at stevens-tech.edu