F150 vs Silverado
Senior Member
Joined: Apr 2016
Posts: 273
Likes: 97
From: Ontario
I don't get these statements, how is it behind? Because they make just as much power as DOHC engines, but with one cam? Or is it because they make just as much power and potential in a smaller compact engine (a 7.0 ls is smaller then a 5.0 Coyote)? Or is it because they have made pushrod engines perform where Ford couldn't? Or is it because their pushrod engines are often times more fuel efficient then Fords DOHC engines? Or cheaper to mod? or cheaper to maintain? Just because its an older technology doesn't mean it's behind. Is it because GM can do things with half the cams and valves that it takes Ford to do the same thing? Both companies make great engines, but just because Ford uses a OHC design and GM uses pushrods, doesn't mean ones better then the other...
Gearhead
Joined: Nov 2010
Posts: 1,763
Likes: 782
From: Metro Detroit - missin FL
GM is behind Ford, and is just now developing aluminum bodies for Silverado and Sierra. GM is also way behind Ford in engine technology, still using pushrod, 2 valves/cylinder engines in the Silverado and Sierra.
GM doesn't reply when they are asked about the new aluminum F-150 passing the offset crash tests, and the steel Silverado & Sierra fails the test.
GM doesn't reply when they are asked about the new aluminum F-150 passing the offset crash tests, and the steel Silverado & Sierra fails the test.
Well my thoughts after seeing the video myself . I have a 2005 mustang gt and I have had problems with the aluminum hood paint bubbling. It happened before the 5 yr mark and dealers said nothing could be done unless a hole from rust was present. Now we all know aluminum oxidizes and does not rot like normal metal. With that in my head already I have been a little hesitant about an aluminum f150. I really love the truck and with a big purchase it's alot to think about. The Silverado is also a beautiful truck. Bit let's be honest who is dropping landscaping blocks from that height and if someone is the truck is probably already beat to death. If I threw a loaded tool box at stressed metal I'm sure it would also make that same damage as seen in the video.and I think comparing steel to aluminum is not a fair fight apples to orange comparison. Both have their strength and weakness. .pros and cons so in the end buy what you want I know I'm getting an f150.
Senior Member
Joined: Apr 2013
Posts: 1,219
Likes: 196
From: Mississippi
I don't get these statements, how is it behind? Because they make just as much power as DOHC engines, but with one cam? Or is it because they make just as much power and potential in a smaller compact engine (a 7.0 ls is smaller then a 5.0 Coyote)? Or is it because they have made pushrod engines perform where Ford couldn't? Or is it because their pushrod engines are often times more fuel efficient then Fords DOHC engines? Or cheaper to mod? or cheaper to maintain? Just because its an older technology doesn't mean it's behind. Is it because GM can do things with half the cams and valves that it takes Ford to do the same thing? Both companies make great engines, but just because Ford uses a OHC design and GM uses pushrods, doesn't mean ones better then the other...
Senior Member
Joined: Apr 2016
Posts: 273
Likes: 97
From: Ontario
I had the AFM in my 2014 Silverado and honestly it wasn't that bad, until I put an exhaust on, that's when I could tell it was there. I tuned it out with an InTune and all was good. To be honest, after tuning the AFM off, I can't figure out why GM puts it on, it did nothing to the fuel economy. I get the CAFE, makes the manufactures do some stupid **** to show they are trying, but AFM really doesn't do anything. I'd have no problem buying one again, just might not put an exhaust on it.
Senior Member
Joined: Apr 2013
Posts: 1,219
Likes: 196
From: Mississippi
I had the AFM in my 2014 Silverado and honestly it wasn't that bad, until I put an exhaust on, that's when I could tell it was there. I tuned it out with an InTune and all was good. To be honest, after tuning the AFM off, I can't figure out why GM puts it on, it did nothing to the fuel economy. I get the CAFE, makes the manufactures do some stupid **** to show they are trying, but AFM really doesn't do anything. I'd have no problem buying one again, just might not put an exhaust on it.
Senior Member
Joined: Apr 2016
Posts: 273
Likes: 97
From: Ontario
Yeah the new engines don't have the same problem. The previous generation 5.3 is the reason I bought a 4.8 in 2012. I didn't want the AFM then. But I decided to try the Ecotec3 engine with the AFM and it wasn't a problem...
5 Year Member
Joined: Jul 2015
Posts: 2,642
Likes: 651
From: Durham, NC
I don't get these statements, how is it behind? Because they make just as much power as DOHC engines, but with one cam? Or is it because they make just as much power and potential in a smaller compact engine (a 7.0 ls is smaller then a 5.0 Coyote)? Or is it because they have made pushrod engines perform where Ford couldn't? Or is it because their pushrod engines are often times more fuel efficient then Fords DOHC engines? Or cheaper to mod? or cheaper to maintain? Just because its an older technology doesn't mean it's behind. Is it because GM can do things with half the cams and valves that it takes Ford to do the same thing? Both companies make great engines, but just because Ford uses a OHC design and GM uses pushrods, doesn't mean ones better then the other...
Senior Member
Joined: May 2016
Posts: 371
Likes: 101
I've also had some afm engines. Lifters went out twice in my '10 and I had the oil consumption problem and had to get new pistons and rings. The tranny cooler lines also leaked just after warranty. I noticed the afm in my '14 even before my exhaust. I can not tell when it kicks on in my gf's '16.