TRUCK CAME WITH 305 HAVE PUT 4 DIFFERENT 350 IN

  • Tiny
  • Anonymous
  • 1989 GMC Sierra

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

Thursday, February 7th, 2013 AT 6:44 PM

1 Reply

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,556 posts

Nope, nothing,

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

Roy

Was this
answer
helpful?
Yes
No
Friday, February 8th, 2013 AT 12:38 AM

Please login or register to post a reply.

Similar Questions