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Flat top pistons H/O in new 5.3's?

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Old 07-10-2009 | 12:04 AM
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Wonderer876
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Default Flat top pistons H/O in new 5.3's?
http://houston.craigslist.org/pts/1219571655.html

So discuss lol.
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Old 07-10-2009 | 12:18 AM
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I thought GM quit making the L33 in 2007.
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Old 07-10-2009 | 12:25 AM
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The pistons are the same ones used in 4.8's.Yes they are flat top.
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Old 07-10-2009 | 04:35 AM
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Originally Posted by SincalT/A
The pistons are the same ones used in 4.8's.Yes they are flat top.
Hmmm so, whats the compression in the new 5.3's then in stock form? A good set of heads and cams should make close to or a lil above 400rwhp no?
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Old 07-10-2009 | 05:52 AM
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isn't that deck a wee bit dirty?
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Old 07-10-2009 | 06:57 AM
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Originally Posted by viciousknid
isn't that deck a wee bit dirty?
yea, i dunno whos that is, just noticed the flat tops in it.
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Old 07-10-2009 | 06:58 AM
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he had it for sale on tech, it's been torn down, and reassembled
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Old 07-12-2009 | 09:03 AM
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they're all flat tops now...the heads on 4.8 and 5.3 are 243/799 with larger CC than previous 5.3 heads
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Old 07-14-2009 | 09:36 AM
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Originally Posted by nighthawk08
they're all flat tops now...the heads on 4.8 and 5.3 are 243/799 with larger CC than previous 5.3 heads
is this the same for a 07 classic also? i have been told yes and then i was told no. my truck has the same warrenty as the new 07's. i would think everything would be the same with the classics too.
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