Used Aftermarket Aluminum heads.

[Cool Kat with Hot Car]

Bored&stroked, For the uninitiated like me please define RA and MLS?

[cjshaker]

Originally Posted by Cool Kat with Hot Car

Bored&stroked, For the uninitiated like me please define RA and MLS?

RA is the surface finish (average roughness), which is really important for MLS gaskets. MLS meaning multi-layer steel.


Cometic makes some of the best gaskets. Pricey, but worth it. Like mentioned though, surface finish MUST be adhered to.