Specializing in 1980-1981 Turbocharged 4.9 (301) Pontiac Trans Ams and Firebird Formulas.​

$70.00 pair (+shipping)

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Performance Head Gaskets

The factory style head gaskets for the 301 had many of the coolant passages blocked off between the cylinder head and block.  I assume this was done for emissions and fuel economy purposes as a hotter combustion chamber allows for more burning of emission gasses and a leaner fuel mixture.


Unfortunately, this additional heat does not work well in a turbo application.  Especially one with out intercooling capabilities. 


TTA Performance offers these modified Fel Pro head gaskets.  We have added some additional coolant holes that will keep the combustion chambers a little cooler to help avoid detonation.