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Old 04-18-2004, 07:35 AM
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engine sleeve

i am just about to buy a 350sb, however i am told now that at one point in time this engine has dropped a valve and the #1 cylomder will need a sleeve.

What is a sleeve, and should i buy this motor if i am looking to build 350-375 horse.

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Old 04-18-2004, 07:51 AM
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Sleeved a 396 once and it worked just fine. I have heard that a lot of engine people don't recommend it.

For the price of sleeving it, you could probably find a block that doesn't need sleeving. 350s are about the most common V8 block that there is......

If you are being given the block, that might be a different story...................
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Old 04-18-2004, 09:23 AM
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To "sleeve" your block: The machinist will bore the bad cylinder out to take a "repair sleeve". This sleeve is usually 3/32" thick or more and is installed in the new bored hole with a press fit, so it can not move. Then the sleeve is trimmed to your engines deck height and bored to match the other bores in the block. THERE IS NOTHING WRONG WITH A PROPERLY SLEEVED ENGINE. The sleeve is usually made of better material than the block and is cast under better conditions. Many race motors are based on sleeved blocks.

AS for the cost. That is up to you. If you have access to other blocks then the cost would not be worth it. 4-bolt Chevy blocks are getting harder to obtain every day. So the cost may be worth it.
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Old 04-18-2004, 10:20 AM
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I had to have my 350sbc sleaved because one cylinder was bad, this was after there was work already done to it so i went for it. My guy put some special stuff on the sleeve to seal it because when he bored that cylinder it went into a water jackit but he also left a ridge at the bottom of the cylinder to prevent the sleeve from slipping down and then decked the block to make it streight and it was only $100.00 doller's for the sleave. good luck

I also know of a fellow that has a 396 bbc that he sleaved every cylinder and then he had it bored .060, and the sleave's alone cost him $800.00 doller's. So just do'in one is not totally off the mark. So in my oppinion go for it atleast you know what you got.

Last edited by bowtieorbust; 04-18-2004 at 10:20 AM.
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