Lt1t56

I had to replace my head gaskets on my Z at 131,000 miles and everything is fine with the car at this time and I rarely drive it so will probably will never have to do it again. The reason Iam asking this question is that my daily driver is my T/A with 109,000 miles and kinda getting paranoid thinking when is the head gaskets going to fail on my T/A.

Thanks for any replies.

scoobysnax83

Mine were still strong at 171,000 miles. They became a problem when I lost a radiator. Then everything went down hill.

TQdrivenws6

The only problem with my 78000 hard miles on the head gaskets was the poorly flowing heads that came on them from the factory

scoobysnax83

I did mine myself. Probably $150 total in necessary parts, not to count the radiator and countless mods I threw at it while I had it apart. A shop's gonna stick it to you. Probably over $1100.

97WS6SCharged

~ 78K on mine, 25K of them with a blower running at 7 PSI. I've got a pic of the blown gasket, it broke the ring (gasket ring, not the piston ring) and pushed it into the water jacket. Anyways, do it yourself. Figure $35 for each gasket, $20 for the intake gasket, $100 for oil, filter, antifreeze, thread sealant, etc... $50 for some new head bolts, and $60 to have the heads shaved flat and checked for harness and bad valves.

You can realistically do it for about $300 if you do the work. You may even find your springs are weak causing you to lose power like I did. A nice valve job with upgraded springs wouldn't hurt either.

Lt1t56

It cost me about $550.00 total, that includes gaskets, fluids, and having heads reworked ...... resurface, new valves, springs, and valve seals.

Dave '97 Z28 M6

200,000km / 125,000mi.

Good excuse to start my 383 project