got problems 426 small block

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S\B have a problem blowing Head gaskets if the comp ratio is more than 10 to 1 FEL-Pro gasket 8553 PT do not work for me but I have found that if you use Fel-pro #l008 they work great but they are costly I have a comp ratio of about 11.4 to 1 and have not blown a gasket using the 1008 gaskets