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Old 06-20-2013, 11:13 PM   #6
Rufton
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Join Date: Apr 2013
Location: Knoxville TN
Posts: 1,170
Re: C30 7.4 454 running hot

Check radiator inlet and outlet temp w/ IR gun.
Do you know if engine is sludge free?
Are right and left heads the same temp?
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