djfllmn

iTrader: (1)

now im gonna google the AFM one...im curious myself

waltheraustin

They use crappy parts as they bring it down to a 4 cylinder or 6 when cruising for better milage. I turned mine off but the parts stayed in. Supposedly if AFM wasnt deactivated then oil levels would gradually decrease. Something like that as I can't remember all the details but they had their issues that's for sure

Napalm

NASCAR is crap in general and those rules are about being antiquated - if I recall correctly they still require carbs on cars.

But as you go down this road - GM competes in the lemans series with pushrod v8's and does rather well If I recall - and they've won the 24 hours of daytona a number of times - on a pushrod 2v V8.


Define your performance goal before saying the only performance system is _________. As I said before one of the big goals here is low end torque and longevity in hours.

djfllmn

iTrader: (1)

in truck and busch they use carbs yet...in cup they have used EFI since 2012 i believe.

hidesert cowboy

AFM isn't the design of the engine, its crap that is added externally to the engine. the early LS engines are practically indestructible. they are pulled from trucks with 200k miles dropped into a car and boosted to 700hp wheel. the engines are in great shape when pulled generally with that kind of mileage. look I am no GM fanboy, I drive a ford I never plan on owning anything GM. but the fact is when it comes to V8 engines, ford isn't the best. its just not. it seems like the more things change the more they remain the same. GM even since the 80's has had crappy build quality but the engines are squared away.

I know what ford wanted to do because I listened to the engineer who designed the engine talking about it. he explained lots of things, like WHY they chose it to be a 7.3, he also made the same point about overhead cams, he said the only advantage is at high RPM. Why does everyone seem to throw a hissy fit around here? NO we don't need overhead cams, go break one of those freaking 2 seat bicycle timing chains and get back to me on how easy they are to put back together. The other 2 makes are doing it with push rods old school style. as for hemi tick, The 5.0 has the same problem, LOL at least on a few engines. I don't know why many of you guys even post here, are you hear to learn or just jump on a soap box and proclaim what you think is true with no room for other idea?

I think fords idea of this engine is awesome, but its not going in anything other than a superduty or larger. look how long 4.6 was the largest engine you could get in a mustang? they aint putting in a 7.3 iron block engine. We already know they limited the 6.2 to certain trims in the f150, the engineer also alluded to the fact that this was a heavy duty engine ONLY, that means its designed for full loads all the time. think moving trucks and medium duty applications. that was the design idea.

Takeda

It's the valve train that's causing the engines to blow!

Here are a few articles for you on your LS engines:

https://leftlanenews.com/chevrolet/c...roblems-89973/

Mark Miller

I think I have seen that video before so I didn't click on it,but didn't that engine only have 10,000 miles on it?

Takeda

Yes!

untraceable

The limiting factor of the F150 isn't the 3.5TT or the Coyote, its the "150" part. Though Im not one to turn down power, Id much rather see a turbo coyote or the new SC 5.2 hit the f150/Raptor

Papagene55