Not Ranked
99 % of these SPF cars do NOT overheat, even with bigger engine applications than yours. when they do, it is a rare occurrence !
your fans should come on at 92 +/- C and shut off not too long later...dependent on how slow you are going , or if stopped. sometimes the temps will drift up towards 100C as fans work to bring the temps down, but seeing 100 C in non race conditions is highly unlikely. they usually kick off real quick once you get going from a stoplight. some folks have a manual override so they can control when they come on and go off, vs automatic on / off. i have an over ride on mine for security.
First 2 things i would check, and have seen it a dozen times :
1. are BOTH fans running ( i have seen a few cases where one shut down/broke/quit and the remaining fan cannot properly keep it cool ).
2. the MOST common occurrence is someone accidentally disconnecting the wiring to the fans and reversing one ( or both conceivably) when they hook them back up. cuz if the wire connector is installed incorrectly the fan will PUSH and NOT PULL...and therefor not properly cool. Check the fans to make sure they are both PULLING, ie sucking air from front to back, and turning the same way and not pushing air toward the front of the car.
my water temps run 75-85 C on highway , depending on ambient temps outside. it rarely climbs to anything above 95 -98 C in the harshest of ambient temps and slow driving. many SPF big blocks experience the same temp readings as i do, 460 and 514s alike.
not sure what my radiator cap pressure is , car is offsite now..
check your fans first as described above..let us know what ya find. it is real easy to reverse the fan wire connection / plug in and have one running the wrong direction as a result.
i had to replace a thermostat once, no big deal, but if ya replace it make sure you spend the money to get a high quality stat.
bill
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