Live from Maple Grove-NHRA Lucas Oil Series

[V M Kauffman]

The reason for the Head Gasket Recall was poor engineering, LS engines including the LS 7 only has a deck thickness of 100 mm which =s .394 thickness the head was bending which caused the failure. All Dart and World heads are at least 5/8 ths (.625)! The LX head is about the same as the production LS but gets the 2 extra head bolts. Hence the Recall on Heads for the S/C engine. Just look at a print of the Cylinder Heads.

Originally Posted by GUMP

I wonder if that had anything to do with all the head gasket issues that were reported on the four bolt heads?