TRUCK CAME WITH 305 HAVE PUT 4 DIFFERENT 350 IN

1989 GMC Sierra

Tiny

Anonymous

February, 7, 2013 AT 6:44 PM

Hi truck came with 305 have put 4 different 350 in. Runs good for awhile says overheating by light and gauge oil pressure gauge always maxed out. Why do motors keep blowing head gaskets and or head?Do I need to pull ecm andhave flashed for 350 also need change tbi injectors

FOUND 351 RELATED QUESTIONS

1 Answer

Tiny

ASEMaster6371

February, 8, 2013 AT 12:38 AM

Nope, nothing,

did you replace the radiator? A clogged radiator will overheat all your motors

Roy

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