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502 mag engine temp??

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Old 08-03-2010, 12:32 PM
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Default 502 mag engine temp??
I just picked up a 1999 38zx with 502 mags.
both engines run between 170-180 deg. Is this considered normal range?

Thanks Scott
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Old 08-04-2010, 08:28 AM
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My '99 454 runs 165-170.

Ken
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Old 08-19-2010, 02:14 PM
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anyone else?
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Old 08-19-2010, 02:33 PM
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Mine ran about 150 and up to 160 after a hard run.
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Old 08-19-2010, 03:02 PM
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mine are EFI's and run 170-180 ...I believe they should have 180 thermostats,
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Old 08-19-2010, 03:51 PM
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I believe the 502 Mag should run 807252T2 which is a 160* thermostat. Mine may have run 160 and 170 after a hard run(it was a few brain cells ago) I know they didn't run 180 ever. Not saying good or bad, just saying.
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Old 08-19-2010, 10:02 PM
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My 502mpi's run 165-175 on the gauges. I wouldn't worry about 170-180* as long as they are consistent.
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Old 08-20-2010, 07:12 AM
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My 454 mpi with fwc runs 170-180 also(mostly just under 180)
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Old 08-20-2010, 09:00 AM
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Originally Posted by SLAZARZ
I just picked up a 1999 38zx with 502 mags.
both engines run between 170-180 deg. Is this considered normal range?

Thanks Scott
Thats where mine run also, when running hard, with 260 Oil temp . Than head way speed water temp. 155, 160.
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Old 08-20-2010, 07:12 PM
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Might be time for new sea pump impellers.
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