Exact wording on 67 temperature sender

[Joe R.]

The 1967 TIM&JG says that the wording on the temperature sender should say "AC MADE IN USA 12V."

I recently picked up a sender that says "AC MADE IN USA 12 VOLT." Is this incorrect for 1967? I only have the TIM&JG for 1967, but I have heard that the correct wording may be different for different years. I've also heard that for 1966, the TIM&JG says the words should be inverted, so that the bottom of the lettering faces the nut flange. My 1967 TIM&JG makes no reference to the orientation of the lettering.

I'd just like to get clarification regarding what to look for to get full judging credit for the sender on my 1967 327/300.

[Gene B.]

Re: Exact wording on 67 temperature sender

The wording should be inverted. The ones where the wording is not inverted is a service replacement, but it will not give you correct reading for the temp. If I recall the temp guage reads higher than the correct one.

No one to my knowledge repos the correct ones. I pulled a bunch out of older GM (not corvette) cars in junk yards. I have sold them at Bloomington, so I have none left. Look in the drive line, there might be son=meone who has some available.

There was an article on this in one of the Restorer's, but I don't recall which one. The article describes how to fix the incorrect reading on the temp guage. I think it is done with a 3 ohm resistor being install in line, (under the wire shield). The service replacement does not have the correct resistance, therfore the incorrect reading.

Unfortunately you will loose points two times. One for the incorrect temp reading during the ops check and then during flight judging. It is sometime a bit difficult to see the wording, but the ops check will definately be caught. Also it will not pass PV.