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Old 05-22-2026, 08:02 AM
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68 Firebird 68 Firebird is offline
Chief Ponti-yacker
 
Join Date: Apr 2001
Location: Colonia NJ USA
Posts: 994
Default Thermostats

Had good luck with Superstats years ago.
Been doing NOS ones off eBay and very impressed.
Years ago picked up a NOS AC Delco 170 for a corvette.
When tested it cracked open at 167 and fully open by 185.
When in use my gauge stays at 170ish around town and175ish
On highway in the heat. Drops right back to 170 when back
On side roads. Bought another as a spare for garage art.
This is with a standard duty fan clutch!!!

Gerry

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1968 Firebird 400, 068 cam, TH400 & 13" Continental Converter, Auburn posi with 3:08 factory gears, Cliff's Q-jet resting on a 68 factory iron intake, GM HEI and Ram Air pans and RARE Long Branch Manifolds