- Nov 28, 2006
I supposedly have two 1G heads but they are different. I need to know what the differences are for a 90-91 turbo head, 92-94 turbo head and 90-94 non turbo head. Or at least which two heads I have. So far I can see that my second head has longer cam cap bolts and visually the heads are very slightly different. There is an extra bolt hole on the thermostat side of the second head. The first head says 2.0L on it and the second head says 6G. I can take pics if it helps.