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Old 03-07-2020, 11:38 AM
opeliac opeliac is offline
Chief Ponti-yacker
 
Join Date: Mar 2010
Posts: 500
Default Over heating while driving on freeway.

I know this subject has probably been beat to death, but i'm ready to beat it some more...

I have a customer bringing me a 68 firebird with a fresh 455...He says the car never overheats during city driving, but will immediately overheat on the highway...Says he can pull over and it will cool right back down...

Its been to several other shops, with no luck...They have supposedly done all of the normal things, water pump swaps, new separator plate, thermostats, etc...

I'm leaning towards it being a timing/carb issue...

 


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