Unfortunately we have run out of billets for the Holden 6cyl and Holden 308 and 304 headed engines. Our US supplier has been struggling with the Covid situation in the US and at this stage we hope to see at least a trickle of the billets arrive in the second half of the year.

We can do regrinds to a limited size if required.

Crow has researched with oil additive manufacturers the optimum level of ZDDP for maximum resistance to scuffing and oil film break down under the extreme loads of high performance flat tappet engines in road and race applications.