Stock 2010 Camaro SS with Procharger kit. Stock bore is 4.065", the Cometic gaskets I have are 4.090". I'm real leary of installing these with that bigger bore on the gaskets.

I have ARP studs I'm putting in, and need to repair header bolt threads that the Percy's bolts stripped out. So the heads are coming off.

Would stock LS9 head gaskets be a better choice?

 

The Gm stock MLS gaskets are nearly that size also. They range from 4.085 to about 4.087 or so. No reason to question that.

 

Good to know. If that's the case, the Cometics should work out perfectly. Thanks for the reply.

 

They'd be fine even if they were a little bigger.

 

The LS7 has a 4.125" bore and the OEM gaskets are 4.150"!