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#79262 06/27/2007 12:39 AM | Joined: Oct 2006 Posts: 29 Junior Member | | Junior Member Joined: Oct 2006 Posts: 29 | Im rebuilding a 1965 Chevy 230 cid Block into a 250 cid Marine engine. But I notice differant part numbers for 230cid & 250cid cam bearings?
In Chevy Truck blocks the CamShaft is the same in ether 230 or 250. Im using a Marine 250 cid Camshaft.
Is there a differance in the Inside Dia. on the Blocks? Or is there a differance in the Outside Dia. on the Bearings? I would like to understand? What is the differance? So I can order the right New Cam Bearings that will work with the 230 cid block & 250 cid Marine Camshaft. | | |
#79263 06/27/2007 3:24 AM | Joined: Sep 2006 Posts: 841 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 841 | i think the difference is the two inner bearings have different od's. the inner holes in the block are smaller. the id's are all the same on the bearings. this is in the older ones at some point they started to use all the same size. i have installed both i think the bigger ones or outside ones can be driven into the inner ones but it can cause cam binding. i think there is .010" difference of something. the cam should be same but you have to get bearings for the block. i think there are only the two variations for those engines. good luck and hope i haven't steered you wrong. hr | | |
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