Upsetting Results Of Compression Test, Need Help

[9TalonNT6]

Hey i just did a compression test on the 1990 GST i just got picked up for 400.00, so here are the numbers:
cyl 1: 125 Psi
cyl 2: 125 Psi
cyl 3: 120 Psi
cyl 4: 8 Psi (did the test 3 times because i couldnt believe it myself)

car idles rough similar to alot of 1g's but drives decent out of first gear. How long do you think this motor has until its junk?

 

[slugsgomoo]

well, it'll be complete junk as soon as it stops running, but 15psi difference is the service limit, so you're ready for a rebuild no matter what.

have you done a wet test to see if it's any better?