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4.8 vs 5.3

Scott Zopf

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Scott Zopf New Member

Scott Zopf

Posted
Posted

 Hey guys, I'm looking at a 2012 1500 work truck with the 4.8, I'm unfamiliar with the 4.8 and prefer the 5.3 on principle alone. My question to you is, any positive or negative reviews for the 4.8? Many thanks in advance

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

It's still an LS engine just with less power and typically less issues on the engine at least.

 

The 4.8 only has VVT where as the 5.3 has AFM/DoD and VVT on 2010+ engines. The active fuel management is a known issue and the 4.8 won't ever have that problem.

 

It's a somewhat sizeable power drop from a 5.3 but it's not going to so slow that you hate it. It will still have good power and can haul stuff just fine.

 

The 4.8's come with 4L60e's still, so there is always that you could possibly deal with. The 5.3 have a 6L80e in all 2010+ trucks, it's stronger but with any transmission there is always a what if.

 

If you drive it nice, the 4.8 likely will edge the 5.3 in fuel mileage but not enough to really brag about.

swathdiver Senior Enthusiast

swathdiver

Posted
Posted
4 hours ago, Scott Zopf said:

 Hey guys, I'm looking at a 2012 1500 work truck with the 4.8, I'm unfamiliar with the 4.8 and prefer the 5.3 on principle alone. My question to you is, any positive or negative reviews for the 4.8? Many thanks in advance

Great engine and no AFM to mess with.  Just don't buy it to pull 7,000 pound trailers with.  

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

It puzzled me during those years why GM made two different small blocks. The fuel mileage wasn’t that different. Same as the 5.3-6.2. Just use a 6.2 that can run on reg or premium gas for more power even E-85. Im sure some real smart guy knows the reason. This redneck from Texas is puzzled. Maybe they should ask Ram.

 

 

Sent from my iPhone using Tapatalk

 

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

Fuel economy reasons for sure. 1-2 mpg helps a ton when going against the EPA and CAFE stuff.

 

Plus the 4.8 was used in the vans and other products that bought GM engines on the commercial side. Having an engine with no AFM/DoD is a plus for them.

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