<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pxtx</div><div class="ubbcode-body">
I don't want to sound like I'm making things difficult, but assuming the heads ARE to GM specs along with the rest of it without verifying is taking a gamble. Usually things result in less than spec compression etc when assuming the parts are as GM literature indicates. I would just hate to see you leave some performance in the table. </div></div>
Yeah...that's more than I can do. I have done a few engines and used the composite head gasket and never have run into issues but those engines were just the run of the mill rebuild lo-po small blocks I read about rebuilding from the Motor manuals and asking questions from the many older mechanics that use to be around. Nobody around anymore to ask those questions or to show guidance that I can find.