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Dart Big M BBC , Anyone have any idea what’s the best sleeve diameter to go with ? I need 2 sleeves installed the finish bore will be 4.562 (right now it’s at 4.532). I’m getting different wall thickness opinions from various sleeve manufacturers , would a 1/8 inch wall be to big 4.815 of a dia in this block ? Thanks in advance .
 

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Discussion Starter #3
Blew 2 rods and chunked the cyl pretty good , this is just a N/A street motor
 

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Street motor and under 11:1 with no power adders should be fine with a sleeve. My block only had .030” left when it was bored for the sleeve and I’m running 13:1 with a 150 shot.
 

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would they be available in such thin wall? ID wouldn't really matter so much as the cylinders can/will be bored
 

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we would probably use a 4.700 or so od sleeve for that. 4.600 bore i normally use a 4.750 sleeve if we have to fix it. I recently did a block that had o-rings for nitrous, and LA Sleeve had a really cool flanged sleeve that worked fantastic for that application. IMO, i wouldnt go bigger OD than 4.750 ish in a 4.840 block
 
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