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Re: C30 7.4 454 running hot
Double check the tstat. Had one years ago, brand new out of the box that was bad. cost me a crank on a 455 Olds. Pull it, put it in a pan of water along with a thermometer and see when it opens. Oh and one other thing, check the a/c condensor and any coolers that may be there too!!
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72 GMC C2500 402/Th400 first truck (still have)
77 GMC C3500 CC dually Sold 
70 C50 dump truck "Rusty"
87 K10 Suburban Sold
93 K2500 xcab 6.5TD
96 GMC K2500 Suburban 6.5 TD
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