Blowing head gaskets

1989 CHEVROLET CHEYENNE
2,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
Avatar
CARLOSALVI2
  • MEMBER
  • 1 POST
I blew a head gasket in my 2500 3 or 4 years ago. Had the block resurfaced and gaskets replaced. Truck seemed to not run as good after that.
A little over a years later, it blew the gaskets again.
Had a rebuilt crate motor put in the truck about six months ago. Within 800 miles, it blew another head gasket. Engine is under warranty, so got head gaskets replaced. Less than 1,000 miles, blew the head gaskets again.
My question is, if it is doing the same thing with 2 different engines, could this be an electrical issue or sensory? It seems to me that it must be coming from something outside the engine, but I'm no mechanic.

Any feedback is appreciated.
Aug 4, 2019 at 6:39 PM
Advertisement
Avatar
SCGRANTURISMO
  • ✓ASE Certified Mechanic
  • 4,897 POSTS
  • ASE Certified Mechanic
Hello,

This is either a case of bad luck, with the rebuilt crate motor, or, excuse me for saying this, maybe a change in driving habit. The 350 C.I.D. engine is a staple for General Motors for many years, being used in many applications and has been proven to be a rock solid designed engine. It is probably just bad luck. Personally I have bought a 3.0L factory crate engine from Ford for a Ranger pickup, had it installed at a Ford dealership, and made it 100 miles before there was a oiling problem and the oil wasn't reaching the valve-train. I had to have the whole engine replaced, under warranty of course. So, my point being, it happens. The 5.7L(350 C.I.D) engine is a rock solid engine, and I wouldn't worry to much about this, it sounds like a snake bite to me.

Thanks,
Alex
2CarPros
Aug 4, 2019 at 8:45 PM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
When you say create motor you mean GM - Goodwrench?
Aug 5, 2019 at 10:50 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.