Max displacement from 4.8/5.3 block?
07-07-2004, 05:34 PM
#11
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I read an article online somewhere about a 5.3 that was bored out .125.....and it worked fine. that seems like a CRAZY overbore to me...but if it works don't bitch
I've also heard of a few 6.0's that have gone .125 over.....with a 4.125" stroker crank that's 441cid !!!
I've also heard of a few 6.0's that have gone .125 over.....with a 4.125" stroker crank that's 441cid !!!
07-07-2004, 06:18 PM
#13
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Originally Posted by mudz5.3
O1 Are you trying to say something??? Did you throw an 8.1 crank in that little 4.8 of yours? j/k before a noob gets a hold of this thread.
Wouldn't it be cheaper to just start out with a 6.0 block? I don't think the high revver would be ideal for our trucks, but thats my .02
Wouldn't it be cheaper to just start out with a 6.0 block? I don't think the high revver would be ideal for our trucks, but thats my .02
. but I will probably do as others have , and swap to a 5.7, or a 6.0havnt got there yet so havnt really put any thought to it.
07-08-2004, 01:20 AM
#15
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I have seen a 5.3 block bored .120 over and honed to 3.905 to take 5.7 pistons ( not stock ones). And it was thicker than a 6.0 that was bored .030.
Both were sonic checked and the 5.3 was twice as thick. After being bored. But it all depends on if you get a good block. Some are good some arnt. Just get it sonic checked before boring.
Both were sonic checked and the 5.3 was twice as thick. After being bored. But it all depends on if you get a good block. Some are good some arnt. Just get it sonic checked before boring.
07-11-2004, 11:15 AM
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isn't there a site that lists the bore/stroke of all of the LS1 series motors? I'd like to look at it if anyone has it. Also, is there anyone making aftermarket pistons for the 4.8 and 5.3?
07-11-2004, 01:07 PM
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All Gen III engines are 6 bolt mains. 5.3 and 5.7 cranks are the same, except for the 5.7's being lighter due to drilling.
As for the question of would it be worth it? I don't think so unless you have something very specific you want to do with it. It will cost about the same to bore a 4.8/5.3 as it would to buya 6.0 bare block. With the 6.0, you would already be there.
As for the question of would it be worth it? I don't think so unless you have something very specific you want to do with it. It will cost about the same to bore a 4.8/5.3 as it would to buya 6.0 bare block. With the 6.0, you would already be there.
07-11-2004, 01:14 PM
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Originally Posted by SportSide 5.3
isn't there a site that lists the bore/stroke of all of the LS1 series motors? I'd like to look at it if anyone has it. Also, is there anyone making aftermarket pistons for the 4.8 and 5.3?
Diamond and several others will custom make the pistons for you.
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