Gen IV 4.8L question?
Thread Starter
TECH Fanatic
Joined: Jul 2005
Posts: 1,685
Likes: 7
From: Beebe, Arkansas
Gen IV 4.8L question? Do the new Gen IV 4.8L's have the Active Fuel Management ports in the blocks like the 5.3L's and are they drilled.
I though about making a 4.8L AFM for a little better mileage on a project car.
Looks looks like all i would need is the lifters, manifold/valley cover, harness, and oil pump. As well a PCM tune.
Or would a 5.3L AFM get the same mileage? The 4.8L are cheap and I have a source for AFM parts.
I though about making a 4.8L AFM for a little better mileage on a project car.
Looks looks like all i would need is the lifters, manifold/valley cover, harness, and oil pump. As well a PCM tune.
Or would a 5.3L AFM get the same mileage? The 4.8L are cheap and I have a source for AFM parts.
On The Tree
Joined: Oct 2003
Posts: 169
Likes: 0
From: San Antonio, TX
I believe the block castings are the same between the two engines so it should work. Dunno if it will get better mileage than the 5.3 or not. I guess it should if its in a fairly light vehicle.
