4.3 vs. 5.3 weight comparisons - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 04-25-2010, 08:20 PM   #1 (permalink)
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4.3 vs. 5.3 weight comparisons

Well anybody got any?
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Old 04-25-2010, 10:58 PM   #2 (permalink)
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i looked and came up with this 4.3 comes in at 425 and all i could find was ls1 weight witch is 460 but its aluminum and the 5.3 has an iron block so idk

info came from here

http://www.bacomatic.org/~dw/library/txt/engfyi.htm
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Old 04-26-2010, 04:18 AM   #3 (permalink)
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y not just split the difference and get the 4.8?? but i really dont now how much lighter it is than the 5.3
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Old 04-26-2010, 08:16 AM   #4 (permalink)
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y not just split the difference and get the 4.8?? but i really dont now how much lighter it is than the 5.3
Maybe 2-3lbs, at most. Drop Obama's kids off at the pool before hopping in your rig and you'll have negated any real weight difference.

The only real difference is the shorter throw crank, longer rods and flat top pistons. All else is the same between the 4.8 and 5.3 unless the 4.8 was a manual (early years).
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Old 04-26-2010, 10:08 AM   #5 (permalink)
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Maybe 2-3lbs, at most. Drop Obama's kids off at the pool before hopping in your rig and you'll have negated any real weight difference.

The only real difference is the shorter throw crank, longer rods and flat top pistons. All else is the same between the 4.8 and 5.3 unless the 4.8 was a manual (early years).
4.3 v6 verse 5.3 v8
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Old 04-26-2010, 12:50 PM   #6 (permalink)
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425 for the 4.3L vs the 5.3L iron block will weight 500 or so fully dressed. The iron block adds 70-100#'s over an LS1 which is 430#'s or so.

The 5.3L Long block will weigh 450#'s.

The L33 AL block 5.3L will weigh about the same as the LS1.


Good weight thread!
http://forums.hybridz.org/index.php?showtopic=59086
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Old 04-26-2010, 02:06 PM   #7 (permalink)
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Quote:
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4.3 v6 verse 5.3 v8
I was referring to trail11591's post.
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Old 04-26-2010, 06:17 PM   #8 (permalink)
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yeah sorry bout that i just threw it out there then kinda realized they are basicaly the same motor
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