Stock block limitations

[Foosie]

I’m starting to get close to full bolt on and the question just popped into my head, at what point do you need better internals? I know the transmission is sub-par but how strong is the stock engine?

 

[FiveLeeter918]

There are quite a few members touching 550hp on the stock block without issue.

You can get a manley rotating assembly and ARP head studs for around $1700 on our website that we have several Ecoboost customers running with good results. With that the engine is theoretically good to 1000hp.

 

[ridered74]

Mods wise, I have everything but upgraded turbos and meth. I ran it down the track 130 plus times last year and probably double that many times on the street. They will take a beating for sure, but if you beat on them that bad it would be wise to follow the severe duty maintenance schedule for all fluids. I usually don't even get to 2K miles before I change my oil.

 

[StealBlueSho]

Seems to depend on who you listen too.... and what your goals are?

My current tuner won’t push it past 500awhp which is where I am at.. I have the mods to go higher, lots of head room, but Gearhead said at 500awhp your pushing the rods as is. Livernois won’t tune them past 475awhp for the same reason.

When you get up towards 500+ it’s a crap shoot on how long the motor/trans lasts. You do start seeing people popping motors and having trans issues. At that point it’s like playing with fire, it’s fun but at some point you are eventually gonna get burned.

It does seem that as tuning becomes more developed, they are pushing them harder with less issues. Time will tell!

 

[StealBlueSho]

There are quite a few members touching 550hp on the stock block without issue.

You can get a manley rotating assembly and ARP head studs for around $1700 on our website that we have several Ecoboost customers running with good results. With that the engine is theoretically good to 1000hp.

No closing the deck huh?

 

[SM105K]

No closing the deck huh?

I always enjoy a good close decking conversation.

 

[StealBlueSho]

I always enjoy a good close decking conversation.

Yea? I would just think if you are gonna push enough boost to hit 1000hp, you have the motor open already.... why not close the deck for extra insurance.

I don’t know any SHO that is close to a 1000HP.... Uwe at XDI is testing an F150 motor on an engine dyno to hit 1000HP...

 

[SM105K]

I agree. I don't think close decking is a important as it used to be. There are quite a few stock block set ups with small cubic inches hitting 1000 these days. 4.8 and 5.3 LS combos are a dime a dozen. It just goes to show how good engine design and materials are these days. Crazy.

 

[Iqoniq]

Theoretically, if you did build the motor into the 500+ whp range, couldn't you cryogenically treat the transmission's internals and add some more durability to it?

 

[StealBlueSho]

Theoretically, if you did build the motor into the 500+ whp range, couldn't you cryogenically treat the transmission's internals and add some more durability to it?

Yes, one our members is currently going through that now.

 

[Jordan_R]

I've seen these motors go before and after upgraded turbos. I've also seen people make ~600awhp/torque on stock block. It's anybody guess how much we can handle.

 

[Foosie]

I read somewhere that the connecting rods can only handle 500hp. Do forged internal exist for our platform and are they worth it?

 

[StealBlueSho]

I've seen these motors go before and after upgraded turbos. I've also seen people make ~600awhp/torque on stock block. It's anybody guess how much we can handle.

It becomes a question of longevity and goals... you can crank the torque/hp up.. but how long will it last. Historically if you are running a good tune, regardless of turbo configuration, it appears under 500awhp seem to net good longevity.

 

[StealBlueSho]

I read somewhere that the connecting rods can only handle 500hp. Do forged internal exist for our platform and are they worth it?

Yes and depends is the second answer. See my previous reply concerning what it can handle.

 

[Foosie]

It becomes a question of longevity and goals... you can crank the torque/hp up.. but how long will it last. Historically if you are running a good tune, regardless of turbo configuration, it appears under 500awhp seem to net good longevity.

Ideally I want to push for low 11s and if the tranny holds up into the 10s

 

[StealBlueSho]

Ideally I want to push for low 11s and if the tranny holds up into the 10s

You should ping Jordan and 802SHO for what it takes to get to low 11’s... there are no 10 second ecoboost SHO’s.

 

[Foosie]

You should ping Jordan and 802SHO for what it takes to get to low 11’s... there are no 10 second ecoboost SHO’s.

That’s the point

 

[StealBlueSho]

That’s the point

Go for it! Excited to see what you come up with. Good luck!

 

[Ecoboost_xsport]

I read somewhere that the connecting rods can only handle 500hp. Do forged internal exist for our platform and are they worth it?

They exist, Gen2 Raptor crank (and for rods/pistons, there's always the compstar rods, JE pistons, etc)...ask me how I know... .

Callies has alot of this stuff as well...

 

[skyshadow07]

I know I'm 'that' guy that keeps beating this dead horse. But, if you want to run lower ETs then consider dropping weight in our 4500lb sedan. That's how Jordan got to where he is (fastest SHO currently). It's not all about HP. Plus, weight reduction means less stress on things like the trans, RDU, PTU, half shafts.. etc