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Joined: Mar 2009
Posts: 3
Member
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Member
Joined: Mar 2009
Posts: 3 |
I have the correctly dated and numbered Distributor for my 68 firebird. What I am not sure of is the vacuum advance module. I have a 400 convertable with an automatic transmission. Question is does the vacuum advance have one port or two?
Mark
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Joined: Mar 2004
Posts: 11,905
Valued Mentor
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Valued Mentor
Joined: Mar 2004
Posts: 11,905 |
Two, if early '68. One if later. See the service bulletins on this site for the date that the service bulletin was issued that discontinued use of the the vacuum retard port.
The distributor is also dated, and should be dated between the block casting and the build date.
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