Need some quick answers on a cracked block... (SBC)

[obengston]

My number 6 cylinder has a small crack. Its a 383. Was thinking about having it sleeved. Any Opinions on this will it be okay. I will be pushing around 450hp to the wheel, with an occasional 100-150 nos.

Oscar

[Lowend]

I think small blocks are too cheap to bother sleeving one

[ArtosDracon]

If it's a high dollar aluminum block then it might be worth it to re-sleave one cylinder, otherwise I would just replace the block and transfer over the internals and top end with new bearings and seals and what-not.

[obengston]

I know I could find another 4bolt 350 block spend 150-250 then have to have the machine work to it for the strker package which I figure the machine work would run another ??? So now I have spent another 6-800 for block and machine work. It should not cost me anything to get the sleeve done because the guy I got lower block from said it was in freat shape and had the best machine work done ( iguess they missed something..like sonic testing it or something) because the engine only has about 500 miles on it since everything was assembled for a 383 from the same guy.

[Pro Stock]

A sleeve done right will be the cheapest, easiest and quickest way to get your car back on the road, if it is done by a quality machine shop you will suffer no ill effects of the sleeve.

Dale

[TT302Z28]

I was a machinist for a few years. There are a few things you need to know about what happens when you sleeve a block. The most important being that it may push the adjacent cylinders out of round. Now, you will have to bore the sleeve and the other cylinders out another .010.

Get another block. You will be better off in the long run. I have also seen where you can get a short block "crate" for less than using your parts. Use the block you have as a core.

[moparcolt]

I got a 4 bolt block If you need one. I wouldn't mess with the old one there could be other issues with it and you will end up replacing all the pistons and having the whole mess re balanced.

[obengston]

Everyone makes some really good points, but seems I would possibly be okay if its done "right", so I quess my choice is do I really want to take that chance. I quess I need to find another block, and pay for all the machine work. Man this one was just done, now I'm back to paying what ....600-800 for a block and to have it machined for the stroker package I have..

[Pro Stock]

Everyone makes some really good points, but seems I would possibly be okay if its done "right", so I quess my choice is do I really want to take that chance. I quess I need to find another block, and pay for all the machine work. Man this one was just done, now I'm back to paying what ....600-800 for a block and to have it machined for the stroker package I have..
I'll take the old block off of your hands if you don't use it, I'm in the Charlotte area

[TT302Z28]

I would search craigs list and your local pick and pull type place. 70's era trucks had 4 bolts and had a part number ending in 010.

I never pay more than $100.00 for s block already .030 and $150 for a STD bore block.