from cast iron to aluminum

Switching from cast iron blocks to Arias aluminum block. Should I change the bearing clearance due to the aluminum expands more from the heat than cast iron? Is there anything else I should consider.

 

Maybe the opposite? Like with an aluminum rod if you detonate it the rod bolt can crush the cap down onto the bearing. I have an aluminum 525 blown chief big head chevy stayed together many years with .0045-.0055 rods and mains through a few cylinder back fires that pulled head studs and cracked blocks and heads.

Marty Creech

the chevrolet six https://www.youtube.com/watch?v=chZ4lAzC-0g