Quote:
Originally Posted by Bentwheelbob
So are the 1978 thermal vacuum switched made from the same unobtainium as the 1972 switches? Does anyone have a part number or better yet a used or NOS switch for sale?
Thx.
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The “traffic signal” ported vacuum switch is referred to as the “EFE & EGR TVV” aka “TVV valve” in the “Street Tuning The Trans AM” information I had previously posted. There have been GM part #s and photos posted on PY in the past. At this time I do not have that information available. Perhaps Rocky Rotella, 2Many, etc. can provide that information?
Also a detail note: I noticed your gas cap appears to be an aftermarket part. No intention to nit-pick, wanted to provide you what the OEM style looks like. See #9864N in the illustration below for the correct gas cap.