New LS1 Owners - Newbie Tech - Question about LR4
07-11-2009, 05:31 PM
Is it possible to bore and stroke an LR4 out of an 06 silverado and basically turn it into a 6.0L(LQ4) using a stock LQ4 rotating assemble? I found one (an LR4) in a junkyard that I can pick up for a hundred bucks. The 4.8 just isn't going to be enough for my intended use but it is too good of a deal to pass up.Thoughts?
07-11-2009, 09:23 PM
I'm not 100% sure, but I dont think you can bore it out to a 364.
07-12-2009, 02:06 AM
There is also a 5.3 I may be able to snag for cheap due to the block being broken. Could I basically swap all of the 5.3 guts into the 4.8 block, I know the 5.3 is a stroker version of the 4.8, but to be honest I do not know what that means as far as physical differences within the engine (yes I know the piston travels further up and down, 9mm by what I have found in online research)
07-12-2009, 03:38 AM
Well I was able to answer my own question, I know most of you are car guys but there is an excellent tech series on LS (GenIII/IV) series engines on pirate4x4.com, according to the article, the largest you can safely bore a 5.3/4.8 is a 5.7L and the guts are swapable, the heads are even the same, dished pistons where used to lower the compression in the 5.3(stroker).
07-12-2009, 08:55 AM
You can build an iorn block LS1 out of a 4.8 5.3 no problem. If that is not enough throw a stroker crank in there
07-12-2009, 12:23 PM
What all would be different between an iron block LS1, and just boring the block out to a 5.7? (There is a reason this is in the noob forum)
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