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#1
01-10-2014, 11:46 PM
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What is this sending unit?
74 Firebird. I don't have the one in the picture any longer and I cannot find it in the catalogues of 3 different pontiac suppliers.
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#2
01-11-2014, 12:21 AM
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It's part of the timed spark. It works off of temp & time so the dist won't advance to early so the engine doesn't advance & pollute the air.
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#3
01-11-2014, 08:14 PM
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Since I switched to HEI, will it still be required?
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#4
01-11-2014, 08:56 PM
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Quote:
__________________
 www.bowhanger.com468 poncho powered 66 cutlass 77 Trans http://s1059.beta.photobucket.com/us...rnout.mp4.html |
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#5
01-11-2014, 09:25 PM
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Cold feed switch. Prevents the TCS switch on the transmission from interfering with the vacuum advance when the engine is below 120F. Not needed if the '73-74 spark advance system isn't used.
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#6
01-11-2014, 11:18 PM
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Got it. Thanks for the replies.
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