The King bearings are truly excellent. We use them regularly in older race
engines
The original main bearings are only bi-metal and definitely not up to the
rigours of racing. We used to regularly kill them 20+ years ago , but at
that time, no upgraded spec material was available for that size. You can do
what John suggests and move the tangs slightly, and go to a newer spec
tri-metal bearing for the mains. You definitely need the latest alecular
material for the rods, or failing that, copper-leads as per BMC Diesel
Terry O'Beirne
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