if there 1.8 there not stock 3tc's it came out in 1980 square body corollas. if you maintain the 3tc there almost impossible to kill! i blew a rod threw my dads old corolla wagon doing 80 on highway with no oil in the engine for almost 45 min before she blew lol! my old man was piiiiiiiiiiist! i was like 16 lol!