First Generation Firebird-L Mailing List ......................................................................... Anything is possible. A bad case of pre-ignition can blow a hole through the piston so if all it did is blow a head gasket, then it's (relatively) easily repairable. Pre-ignition can also be caused by the timing being too far advanced (and many other things). Do you know what compression ratio he built your engine to? Maybe he decked the engine for the new heads and now your compression is way too high to where even 91 octane isn't good enough? Do you have a temperature gauge? If so, did you notice the car running hot? Make sure the guy stands behind his work and don't let him push you around. Hugo
--- On Sun, 1/24/10, [email protected] <[email protected]> wrote: From: [email protected] <[email protected]> Subject: [FGF] Re: 87 Octane and Blown Head Gasket To: [email protected] Date: Sunday, January 24, 2010, 5:12 PM First Generation Firebird-L Mailing List ......................................................................... I am not well versed on mechanics but own a 69 Firebird Convertible that recently had a 400 block rebuilt with Edelbrock heads. I pinging type sound begin around Christmas. I took it in to the engine rebuilder and was just told the head gasket was blown and the reason was due to regular gas being put into the tank. I only use 91 octane. He admits there was sign of the engine being overheated. Even so, has anyone ever heard of a head gasket being blown by reason of bad gasoline or low grade gasoline? The car has been driven less than 2,000 miles since the rebuild. Thanks...Al [Vntge60] ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[email protected]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/>
