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06-27-2007, 11:47 AM #1
2007 5.3 in Aluminum or Cast Iron
I'm in the market for a new pickup. Either GMC or Chevy. I see them on the lots with both. Which engine block would you get and why?
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06-27-2007, 01:17 PM #2
I would get the aluminum because of the weight reduction. You'd probably get a slight more fuel economy because of it.
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06-27-2007, 04:58 PM #3
aluminum. got with the chevy. not the Generic Made Chevy
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06-28-2007, 07:17 AM #4
cast iron... more durable. aluminum sucks
and if u ever want to modify it cast iron will hold up a lot better.
only real advantage of aluminum is it disipates heat faster. but at the same time it cracks because of overheating at a lower temp. (thats where the durability sucks).
weight difference isnt enough to matter, i doubt u would get any gas mielage difference at all.
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06-28-2007, 03:07 PM #5
- Join Date
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B2300 (Fluffy) Retired- Plain-Jane Dodge Truck
Aluminum. Lighter, dissipates heat better, plenty strong. There is no reason - at all - to insist on an iron block in something like this.
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06-29-2007, 12:51 PM #6
Iron...yea it's heavier but your truck is already going to be heavy so who gives a shit about 90lbs. Trucks are all about durability....iron is stronger hands down.
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07-09-2007, 08:10 AM #7
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PEWTER- 2000 CAMARO SS #3821
Go with the E-85 capable engine because you get bigger fuel pump and injectors for future upgrades like a blower.
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