LS2 block vs. 6.0L Aluminum Truck block.... what are the differences?
01-06-2005, 08:55 AM
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LS2 block vs. 6.0L Aluminum Truck block.... what are the differences? When going after a 6.0L swap, what would the differences be between using the new LS2 block vs. the 6.0L aluminum blocks currently used in trucks? Are they essentially the same?
Also, when using a 402" stroker kit in these blocks, do either of them require any clearancing or are they like the 6.0L Iron block which requires no surgery to go up to a 402"?
Also, when using a 402" stroker kit in these blocks, do either of them require any clearancing or are they like the 6.0L Iron block which requires no surgery to go up to a 402"?
Last edited by ElEsWon; 01-06-2005 at 08:58 AM. Reason: Typo
01-06-2005, 10:02 AM
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Unless something's changed in the past couple of months, the 6.0 truck blocks are cast iron.
Originally Posted by ElEsWon
When going after a 6.0L swap, what would the differences be between using the new LS2 block vs. the 6.0L aluminum blocks currently used in trucks? Are they essentially the same?
Also, when using a 402" stroker kit in these blocks, do either of them require any clearancing or are they like the 6.0L Iron block which requires no surgery to go up to a 402"?
Also, when using a 402" stroker kit in these blocks, do either of them require any clearancing or are they like the 6.0L Iron block which requires no surgery to go up to a 402"?
01-06-2005, 10:50 AM
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Originally Posted by org
Unless something's changed in the past couple of months, the 6.0 truck blocks are cast iron.
01-06-2005, 06:01 PM
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That would be nice if true. I haven't heard that about the 6.0. The 5.3 I think is now aluminum. It's hard to believe the 6.0 would be far behind, since having a common block for all the 6.0 engines would be a cost saver for GM.
01-06-2005, 06:10 PM
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Originally Posted by vmax1500
What issue of CHP?
Quote one, p.122-2nd paragraph: "Though the block material has since been changed to aluminum, early LS engine trucks were equipped with the LQ4 and LQ9 iron block engine..."
Quote two, p.124-figure 4: "The LQ4 or LQ9 cylinder block is cast iron rather than aluminum and was used in truck applications until 2003. Now all blocks are aluminum, but if your application calls for an inordinate amount of squeeze or positive manifold pressure, you might consider the efficiency of iron."
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01-06-2005, 08:35 PM
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Originally Posted by fast98
ya he is right they are aluminum and have been for a few months at least, i work on them all the time
01-07-2005, 02:09 PM
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The new 2005 silverados come with all aluminum motors!!! Wich i think is great!!The new improved 5.3L is awsome. THe only thing i dont like is those drum brakes!!!
2003 RCSB (stepside)
3:73,G80
5.3L Stock for noww!
2003 RCSB (stepside)
3:73,G80
5.3L Stock for noww!
01-07-2005, 03:45 PM
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The 04 6L trucks have an iron block, so do the 05 6L trucks. Not all 5.3s have been switched to aluminum. The SSR was the first vehicle to have the aluminum 5.3, since then, select trucks have an upgrade option (with a price) to get an alum 5.3.
As far as I know, only the LS2 has a 6L aluminum block. If a plain aluminum 6L was available, we'd know about it before CHP.
As far as I know, only the LS2 has a 6L aluminum block. If a plain aluminum 6L was available, we'd know about it before CHP.
04-08-2009, 03:05 PM
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September 2004, pages 122 and 124.
Quote one, p.122-2nd paragraph: "Though the block material has since been changed to aluminum, early LS engine trucks were equipped with the LQ4 and LQ9 iron block engine..."
Quote two, p.124-figure 4: "The LQ4 or LQ9 cylinder block is cast iron rather than aluminum and was used in truck applications until 2003. Now all blocks are aluminum, but if your application calls for an inordinate amount of squeeze or positive manifold pressure, you might consider the efficiency of iron."
Quote one, p.122-2nd paragraph: "Though the block material has since been changed to aluminum, early LS engine trucks were equipped with the LQ4 and LQ9 iron block engine..."
Quote two, p.124-figure 4: "The LQ4 or LQ9 cylinder block is cast iron rather than aluminum and was used in truck applications until 2003. Now all blocks are aluminum, but if your application calls for an inordinate amount of squeeze or positive manifold pressure, you might consider the efficiency of iron."
