4.8L vs. 6.0

oncedrove · Feb 22, 2010

6.0 has more power but will a 4.8 work?

fastman_1 · Feb 22, 2010

Yes very hard.

Zoli · Feb 22, 2010

Yes ,will work.

volunteer 1 · Feb 22, 2010

Absolutely and get 3 more miles per gallon while doing it.

oncedrove · Feb 22, 2010

Will the 4.8 hold up as well as the 6.0?
Will the 4.8 run 500,000 miles?

hondaking38 · Feb 22, 2010

i have 2-2008s with the 4.8 both have around 140,000 miles on them..no problems so far...they put out 275 hp..how much more do you need??? i no, i no, most will say bigger is better...but say that at the fuel pump

greg334 · Feb 22, 2010

oncedrove said:
Will the 4.8 hold up as well as the 6.0?
Will the 4.8 run 500,000 miles?

No, and No. The smaller engine has smaller journals and smaller internal specs, it is not made to be a long lasting medium duty engine.

chefdennis · Feb 22, 2010

2005 4.8 in a 3500 extended....282,000 miles as of today...the transmission puked at 274,000 and its the same trans that is behind the 6.0.......i'd buy another one for a CV that is 9660 gvw.....

NOW....if you are talking about buying NEW. you can get the 6.0 with the new 6 spd trans and a 3:42 rear axle ratio...that i would buy on a heart beat......

skyraider · Feb 22, 2010

Lets cut to the chase:: Lets bring back the old 390's and the 427's and have some cargo vans that will kick some butt. Omy, for a moment I was remembering when they made real engines on the road.............omy where is my medicine

jrcarroll · Feb 24, 2010

greg334 said:
No, and No. The smaller engine has smaller journals and smaller internal specs, it is not made to be a long lasting medium duty engine.

Had my brakes worked on this last weekend. The MGR was telling me about a guy who gets his checy van worked on there, van has over 500,000 miles on it. 2006 with 4.8

mine is '06 van with 4.8, auto runs great just do the service as needed and, no problems..

LDB · Feb 24, 2010

I've got the 6.0 in a 2009 extended 3500 with 4sp and 3.73 that gets about 18.5mpg empty at 60-62mph and about 16.8mpg overall, again running 60-62mph. That puts me at 1900 rpm. I considered the 4.8 but believed it would be working enough harder under load to offset any advantage to the smaller displacement. Oh, and it's new with less than 10k miles on it so hopefully mileage will go up just a tick when it gets more miles on it.

greg334 · Feb 25, 2010

jrcarroll said:
Had my brakes worked on this last weekend. The MGR was telling me about a guy who gets his checy van worked on there, van has over 500,000 miles on it. 2006 with 4.8

mine is '06 van with 4.8, auto runs great just do the service as needed and, no problems..

Yes that may be true but what is the percentage of vans on the road with 4.8l engine not achieving these high miles?

The sad thing is GM and Ford and even Chrysler have had products on the market for more than a century and just now having vehicles that are getting more than 250k on average without major problems.

oncedrove · Feb 25, 2010

Looking at a 2008 Chevy extended 6.0 that was on a lease. Has 86,000+ miles on it.
What would you upgrade or change out before putting it in service?

asjssl · Feb 25, 2010

Greg where are you getting your info from ?? I have an 06 w/ 4.8L love it ....240,000 no problems here! Oh excuse me replaced the gas cap @ 210,000 ( bad cap will give u crappy milage)