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no, the block is rebored but this will move the crank centerline a little closer to the cam, direct effect on timing chain tension and timing itself. Align honing removes less material and will not have these issues. Does your block need boring or honing?
 

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All the aftermarket billet mains I can find say that you need to align bore. This is not a positive development.
Aftermarket main caps??? why bother??? you plan to race it flat out at 6500 rpm ++ roundy round at 5500 rpm+ for long times??

IMO....build to the purpose not overkill....for one thing it kills your wallett

there is a reason race teams have MAJOR sponsors....

:cheers:
 

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Cloyes makes the part I need 3145-5 or 3145-15

For a change of .005 or .015.


And there you go. Usual practice for a block that needs to be line bored or honed is to chuck the main caps in a mill and take .001 or whatever it figures to need to get it straight. This makes the bearing bores smaller, then they align either by boring or honing back to the correct size. Like TT said, it moves the crank center closer to the cam, so it's either a gear drive cam or a shorter timing chain. IMHO, if you have to go .015 you need a new block, unless you really really like the one you have.

:cheers:
 
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