I ran my (now sold) 74 Vette with unleaded for a year, I'm running my 67 Elky on unleaded and I ran my 396 on unleaded for 14 years. I too have heard that due to the heat/cool cycle you probably won't have any problems with valve seats. However, when you rebuild the engine you should have hardened exhaust seats installed. I rebuilt my 396 last winter and had this done.
As Dan said, check to see if someone has put a catalytic converter on the exhaust. If that's the case, you HAVE to run unleaded or it'll burn it out in no time. Dale McIntosh ACES #1709/TC #92 Gold 67 SS/67 Elky http://www.dalesplace.com http://www.team67.com http://www.midwestchevelles.com > Henri, > In my 65 I run unleaded fuel, and the motor has never been > rebuilt. The lead > was only added to lubricate the valve seats, because they were > not hardened > back then. I would tend to think that after 37 years of heat cycling the > engine, the seats would pretty much be hardened. Most of the people I know > with stock, ie., never rebuilt, engines in their old cars don't > bother with > the lead additive. How are the Netherlands this time of year? > Dan McIntosh > 65 Malibu > ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
