RJC Bullet Proof Head Gasket Kit

The most common problem with these cars is blowing head gaskets. The reason very simply is there are not enough head bolts to retain the head adequately under the extreme cylinder pressures that our Buicks produce.

There are many type of head gaskets that try to eliminate this problem. Under extreme cylinder pressure, three things can happen, the head can lift stretching the head bolts, the head can deflect or the block can deflect. In each case as soon as combustion gasses are blown by the fire ring the paper or graphite backing gets whittled away. This continues until there is no support for the fire ring the fire ring blows out. Even the wire lock style gaskets are susceptible to this flaw. The multilayer head gaskets suffer from several design flaws causing them to leak both coolant and oil.

Head Gasket Kit Back in the day, the factory GM 100% steel shim gaskets are the toughest most indestructible gaskets on the market.  Now RJC Racing has improved on this design and improved the material to make the new RJC Bullet Proof head gaskets the ultimate head gasket available for the turbo charged Buick V6 engine.  We make these gaskets from .017 thick 304 stainless steal then stamped with all the sealing ridges. the uncompressed thickness is .046. The end result of this makes for a super tough .035 installed thickness. This is around .015 thinner than the stock head gasket. This results in a slight bump in compression that really wakes up the motor and makes it spool the turbo much easier. The rise in compression over stock is around .4. So from the stock 8.5:1 to around 8.9:1.  Back 10 years ago when we were developing these gaskets we got a great tip from Buick guru Jay Carter. Jay worked closely with the engineers from General Electric to develop a sealer for this specific application that works great for a leak free seal. The engineers at RJC Racing took these ultimate gaskets and combined them with the premium sealing materials and procedures and made them available in a kit with detailed instructions. The “Bullet Proof Head Gasket Kit” just flat works. If installed properly they will hold up under the most extreme conditions. We have experienced that even if the head lifts under extreme load the memory in the stamped ribs combined with the adhesion properties of the GE silicon keeps the gasket from leaking. If you ever do lift the head, usually all that is required is a retorque on the head bolts and your up and running for the next round.


We took all of the best attributes from the the GM gaskets and added some major improvements.

Note: We recomend going with the multilayer style head gaskets only if;

#1 you have a bore size of 3.850 or larger

#2 you have a 14 bolt block and you are trying to use all 14 bolts.

These gaskets will support the cylinder pressure required to get a
full weight stock block Turbo Buick easily into the nines.

.035 Compressed Thickness
Price; $159.00

Return Policy

This warranty does not cover any failure due to abuse, accident, or neglect. The liability of the manufacturer shall not exceed the original purchase price of the unit. Read More..