Mechanic sais my 97 grand am has blown head gasket, its got about 189000 miles, he sais $700. to repair, is it worth it?

Could be a blown head gasket. You may need another engine but a used engine installed should not cost more than the car is worth.

http://engineguy.com/news/how-much-should-it-cost-to-repair-a-blown-head-gasket/

hopefully this page will give you an idea of what to expect

no verb? any 2 cars stated.
Problem with 1985 Honda Prelude 97 jeep grand cherokee head gasket
97 jeep grand cherokee head gasket

its not the gasket that costs you its the labour.gasket costs 100 max with seals .labour costs are 600 to endless .so if the car is old get rid buy
one for what you would of spent. m.o.t. proof they are the true owner , you can check this out on any insurance site as a new car for you. but me i would get rid unless its worth it. just take in mind it just takes you from A-B

Liquid Steel, Steel Seal, Duralast-all make a product with sodium silicate that is supposed to seal head gasket leaks. Some swear by it, most mechanics say it is a temporary fix or doesn't even work. It is about $90 per application, but check, I think the cost is refunded if it doesn't work. Some people have even bought sodium silicate (liquid glass) at a pharmacy for a few bucks and claim it works. IDK, it might be worth a try, if you just don't want to replace the gaskets. Google it, it's everywhere, even some testimonials on Youtube. Let us know if it works for you.
Good luck.

Sounds like you have a blown head gasket. Your local friendly mechanic can properly diagnose that for ya. Good luck!

You most likely have a blown head gasket allowing the water and oil to mix. What does the water in your cooling system look like? Do you see any brown froth or droplets? If so, you should consider towing to a mechanic for an opinion. Most likely, the cost of the repairs may not be worth it if the car has too many miles on it. Sorry.

Hello cjin4z, an 86 F-250 is a workhorse, and a fine one at that. If you, or someone you know can replace the head gasket, I think you are getting an excellent deal, if you're sure that all that's wrong with it. I say YES!
Good luck my friend.

no it wont

Blown head gasket. You will need to get your head gasket replaced