Chevy Nova Forum - View Single Post - TCS Solenoid
Thread: TCS Solenoid
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Old 11th-September-2019, 09:36 AM   #5

Title: Nova Guru
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Join Date: Feb 2004
Location: SE Pennsylvania
Nova(s): 1970 Yenko Deuce 1969 Super Sport
Posts: 1,355
The TCS solenoid for '70 is a '432' unit, as stamped on the bracket. As I recall, there are 2 vacuum ports on one end, and only one port on the other end along with a 2 wire plug.

The TCS (Temperature Controlled Spark) system is not functionally required, in fact, from a performance standpoint you're better off without it! Many of us simply drill through the solenoid to disable it, or route the vacuum lines in a way so that it appears to be hooked up when in fact it is not (that's what I've done on my Yenko). Essentially, the TCS system prevents full vacuum advance until the engine is at operating temp and the transmission is in 4th gear = yawn....
70 Yenko = Dad's Nova
69 SS L78 Nova = 17yr old Ben's Nova
67 RS 327 Camaro = 11yr old Danny's Nova
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