Boring an aluminum 5.3
07-28-2010, 02:40 PM
#21
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I'm in Calgary. I'd go with an LS1 block if I could find one and the price was right. I'm starting to lean towards a 5.3 iron block now, too. Simple, strong, cheap and abundant. I know they work, and work well.
07-29-2010, 11:04 AM
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Calgary appears to have an auto parts availability problem in general. I looked at the Calgary Craigslist and I couldn't even find an Auto Parts section.
04-15-2011, 12:37 PM
#26
Anymore new info on this? I have an 07 aluminum LC9 engine thats water damages and I need to have it bored with new pistons, I can get a pic if anyone needs to see it. Im no engine builder, but would like to gain some additional cubes.
04-16-2011, 04:32 PM
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I couldn't find enough information on this so I decided to go with an iron block. Bored it to 3.907 but haven't run it yet. I have between .115 and .175 of wall thickness left on the iron block.
It's a crapshoot on those aluminum blocks, I didn't want to be the guinea pig.
It's a crapshoot on those aluminum blocks, I didn't want to be the guinea pig.
04-17-2011, 01:39 AM
#28
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I wouldn't bother with boring if you really are going to use a blower. Put in pistons with a little less compression and lean on the blower a little more and you can make much more power than the diffrerence a small bore increase will give you.
Just Sayin'
Just Sayin'
04-17-2011, 09:06 AM
#30
Hi guys, I need a definitive answer on this. I don't need any recommendations about buying or using other, more suitable blocks. I just need to know if an aluminum-blocked 5.3 can be bored out to 3.905" for use as a 5.7 sized stroker. There seems to be a lot of conflicting opinion on this. Thanks for any experienced or well-researched advice.
I have a 5.3 aluminum bored to 3.905 and stroked to a 383. The aluminum 5.3 has a thicker cylinder sleeve to make the smaller bore.
04-17-2011, 10:28 PM
#31
KenP what year 5.3 was yours? A Gen III or Gen IV? I can post pics of the engine I have, but I am willing to bet it can be done. Figure if I have to clean up the piston walls and get new pistons might as well gain some cubes in the process.
04-18-2011, 10:48 PM
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I would rather go from a 5.3 to a 6.3, raise the compression a bit AND lean on the blower a bit more. More power out of boost and more torque all around.
I wouldn't bother with boring if you really are going to use a blower. Put in pistons with a little less compression and lean on the blower a little more and you can make much more power than the diffrerence a small bore increase will give you.
06-26-2019, 06:16 AM
#35
Reviving a a dead horse here, but since Google pointed me to this post, may as well respond.
Any boring, whether sleeves or original iron, would be best discussed with the machine shop. They would be able to tell you definite answers for your build. Just make sure it’s a machine shop you thoroughly trust. After all, you are talking about spending several thousand dollars when it’s all done.
12-10-2019, 12:10 AM
#36
The Summit stuff is fantastic for the $$$, btw. You can't go wrong w/ an all Summit build.
Last edited by DualQuadDave; 12-10-2019 at 12:15 AM.
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