[agro1]

The engine builder said it blew cause it was running a bit lean and detonating and also because when the heads were retorqued at 500 miles it was not done properly - both are bu!!sh!t...I run 100 octane and it ain't running lean or detonating and House of Cobras retorqued the heads at 500miles, and they know what they are doing.
It blew because they used a crappy graphite OEM style replacement head gasket on a motor running 12:5.1 compression - which you don't do. THAT is why it blew, and upon inspection of the other side, it too was getting ready to blow in exactly the same manner the right side did. Luckily it didn't. So do I now have to retorque the heads after I run it another 500 miles ??