George Buick Riviera 37 Posted May 12 Hi, can you please help to ID the 455 crankshaft main bearing size. Are those nominal size ? Or ? I was googling for the visible numbers, but no luck for me .... The numbers are stamped on the same single bearing. Thanks for any info. Share this post Link to post Share on other sites
DualQuadDave 87 Posted May 12 those should be standard size. Oversize will be marked .010 or similar. Mic the journals, regardless. 455's are clearance specific, get it right the first time. Good luck! 1 Share this post Link to post Share on other sites
George Buick Riviera 37 Posted May 13 9 hours ago, DualQuadDave said: those should be standard size. Oversize will be marked .010 or similar. Mic the journals, regardless. 455's are clearance specific, get it right the first time. Good luck! I was thinking so - yes I will mic the shaft. Thank you Dave. Looks like the whole engine is still from the factory - i haven't seen the front crankshaft seal rope type for a while ! Share this post Link to post Share on other sites
DualQuadDave 87 Posted May 13 Anytime you find factory bearings these days is a good thing. Make sure you read up on the oiling mods and everything else needed for a 455. They make good power, but you have to fix a ton of factory mistakes in them. 1 Share this post Link to post Share on other sites
