I have a 68 S code 390 GT Fastback, Late Metuchen built car ( built 7-18-68). It's a factory 4 speed car so it has a tach as standard equipment. I thought all 390 cars got an 8K tach standard and all small block cars got a 6 K tach. I mentioned this on another forum and a very respected member advised me that my car should have a 6K tach as standard, and the 8K tach was a separate option and would be called out on the Marti Report. Im almost 100% certain that the car was built with the 8K tach ( it's an unmolested 70K car that really was stashed in a barn since 1973 after an accident). There's no mention on my marti report of an optional 8K Tach (in fact I've never seen a marti report with a 8K upgrade called out as an option). I've parted out two other 68 390 cars that had 8K tach's in the past, (I bought them both for the Tach clusters and associated harness) which is probably why I assumed the 8K tach was correct for my car.
Now I'm curious if my car is a fluke, or if it's an early/late thing, a NJ thing, or what. Any opinions ??
This car also has a 55 amp alternator documented on the build sheet, which is also kinda scarce.
Here's a shot of my marti report.....