- Buick Ownership
- 1970 ELECTRA
I have a 1970 Electra with a 455. Supposedly has been detuned for running on unleaded. Has had the heads redone with hardened seats. Has had some overheating problems in the past, (I have had it for 4 years.) but seems to be getting worse. It idles cool. Runs at about 50-55 mph OK but when I speed up the temp starts to climb drasticly. (240+) It will cool down fairly quickly when I slow down. I don't remember if I put a new thermostat in it or just took the old one out. I am thinking possibly the water pump is shot and not circulating water properly. Just want to ask around before I start into it. I have changed out the stock fan for an electric set up and that helped prior, but as I stated, it seems to be getting worse. Anti freeze test out OK and I have added purple ice but I have not had the system flushed. Also was wondering about an electric pump. Any comments on that? And finally, where to get a pump? Thanks.