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Old 10-10-2024, 04:07 PM
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OG68 OG68 is online now
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Pictures of both intakes showing thermostat opening, date, and casting number?

All engines were built in Pontiac and then shipped to the assembly plants for installation.
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Old 10-10-2024, 05:15 PM
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FHC1971 FHC1971 is offline
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Here is the motor I'm putting in (3/10/71). NAPA shows both thermostats for 1971 Pontiac Firebird 400 motor. The original is in the car (3/17/71).
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