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lmchevy 07-20-2008 05:00 PM

QUESTION ABOUT SLEEVING BLOCKS
 
I was wondering if you can take a BBC and sleeve all the cylinders bigger to a 4.500-4.600 bore.Mainly asking about a 427 tall deck block and getting 572-598ci. out of it.I know that it is not feasible to do this and that it is better to buy an aftermarket block but i am just wondering if this can be done.Thanks

topcat572 07-20-2008 06:27 PM

sleeves
 
Its been a while, but a local shop was doing this, If I remember the guys were using the 4.0 stroke to make a 509. :wink:

russ67chevelle 07-23-2008 02:44 PM

WITH A LOT OF THE TALL DECK 366 AND 427 BLOCKS IVE HEARD YOU CAN BORE MANY TIMES TO 4.350 OR EVEN 4.375...THEY HAVE THICKER CYLINDER WALLS

coloradoracerguy 07-23-2008 06:49 PM

No, you cannot sleeve a 366 or 427 truck block to a 4.5" bore. You'd be into the water jackets. The last one I had sonic checked had a standard bore and the thickest part of the cylinder walls was only .167". You need to have siamesed bores for a 4.5" bore, unless the block was already made with a 4.4" or larger bore.


Mark

alexu 08-02-2008 09:32 AM

sleeving blocks
 
coloradoracerguy is right. Factory block bores don't have enough material to do this. Bowtie or aftermarket. Good hunting.


McCraw Machine and Parts

promodjohn 08-05-2008 06:55 PM

Re: QUESTION ABOUT SLEEVING BLOCKS
 

Originally Posted by lmchevy
I was wondering if you can take a BBC and sleeve all the cylinders bigger to a 4.500-4.600 bore.Mainly asking about a 427 tall deck block and getting 572-598ci. out of it.I know that it is not feasible to do this and that it is better to buy an aftermarket block but i am just wondering if this can be done.Thanks

Your question brings back memories 35 years ago I took a 396 4 bolt main block sleeved all 8 holes and borded 100 over I had pistons trying to change holes what a mess.No don't try it alexu is correct.


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