I have a 85 iroc with a LB9..stock except for thermostat, headers and exhaust. My valve seals are bad and i wanna replace my Heads. any suggestions? i need a good head that will work on a stock motor. would L89 alum heads work?

Also my fuel guage is not working, the needle goes way above full and never moves, any ideas on the problem?

Later ZZ4 heads will work better than the L98 Aluminum castings. They are actually both 113s, but the ZZ4 heads have a revised casting with cleaner ports and bowls, as well as back-cut intake/exhaust valves for increased flow. 355 HP/405 TQ from a 10:1 350 with a 208/221 @ .050" hydraulic roller cam.

Sending unit is bad or the fuel level meter on the in tank is stuck. You could try to bounce the rear end and hopefully cause the level meter to move. Same thing happens to my wifes Ford Explorer. Only happens when we top it off.

staying stock use the stock heads

check the ground for the sending unit