[AG]

Originally Posted by mgarblik

Both Butler Performance and Rock Auto show -.001 bearings available on their web sites. I imagine other vendors have some too. That would enable you to dial in the clearance closer to what you are looking for.

Yes, there are 0.001" under for extra clearance but no 0.001" over to reduce clearance. Wish I was dealing with 2.200" journals.

[mgarblik]

Originally Posted by AG

Yes, there are 0.001" under for extra clearance but no 0.001" over to reduce clearance. Wish I was dealing with 2.200" journals.

I believe you will find that a set of -.001 bearings are what you need to tighten up the clearance a little. This is based on a crankshaft that was ground small, say 2.4992" as an example. The same way a -.010 bearing is made for a crankshaft ground to a nominal 2.490". To get extra oil clearance, you would need a bearing marked "X" for extra, or some mark them +.001 for a crankshaft that is too large like 2.5008" for example. Either way, I think both are available. Just a little harder to find for a Pontiac. Good luck with your build. I also wish you had a nominal 2.200 rod journal. I keep STD., +.001, -.001, -.009, -.010, -.011 in stock here.

[AG]

Originally Posted by mgarblik

I believe you will find that a set of -.001 bearings are what you need to tighten up the clearance a little. This is based on a crankshaft that was ground small, say 2.4992" as an example. The same way a -.010 bearing is made for a crankshaft ground to a nominal 2.490". To get extra oil clearance, you would need a bearing marked "X" for extra, or some mark them +.001 for a crankshaft that is too large like 2.5008" for example. Either way, I think both are available. Just a little harder to find for a Pontiac. Good luck with your build. I also wish you had a nominal 2.200 rod journal. I keep STD., +.001, -.001, -.009, -.010, -.011 in stock here.

Got it. On Butler's site it stated," -0.001" extra clearance." If that means it will tighten up the clearance I'll get them.