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01-08-2010, 09:55 AM
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
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Re: I decided to keep it.
The 6.5 heads are no better.I`d sleeve the passages if you want an upgrade.In`97 GM increased cooling and went from the 85 or 95 Gallon Per minute pump to the 125 GPM and used a dual t-stat crossover housing.These were serpentine trucks so the pump is reverse rotation,not a problem.The higher flow t-stat housing needs work to make the throttle cable possible,since they can on drive-by-wire EFI.I had put all that on my`95 before I went bigtime with a crate marine motor that had all that on it.
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