How much power can the stock internals take?

[IUP99snake]

So, I've been seeing a lot of supercharger and turbo dyno pull vids on YouTube with the new 5.0 and I am very impressed!

With Procharger and Vortech, they are making around 520-520 WHP with only 7-8 LBS of boost.

I saw a turbo dyno pull where they made 543 HP on I'm not sure how much boost..

So, this begs the question: How much can the factory internals take? I know the car has 11:1 compression, but the bigger issue is the connecting rods and pistons. Detonation can be managed in the tune...

What's the most anyone has made on the factory internals so far??

Has anyone broke anything yet?

Based on my experience, I'd say that 530-550 would be all that it could take without going forged. I wouldn't want to push it...

What do you all think?

Oh, and has anyone tried nitrous yet? I'm sure with the high compression, this motor probably LOVES nitrous..

Homer

 

[ViciousJay]

dont know, but you can be our official beta tester if you wish too

but i do know someone ran a 125 shot into the 10's

 

[IUP99snake]

dont know, but you can be our official beta tester if you wish too

but i do know someone ran a 125 shot into the 10's

haha, I have to get a 2011 5.0 first...If that were the case, I'd gladly be the beta tester...

If I were to rebuild the motor with forged internals, I'd use it as an opportunity to add a stroker crank.. too bad the earlier 4.6 based stroker cranks won't fit, due to a few minor differences.

 

[ViciousJay]

haha, I have to get a 2011 5.0 first...If that were the case, I'd gladly be the beta tester...

If I were to rebuild the motor with forged internals, I'd use it as an opportunity to add a stroker crank.. too bad the earlier 4.6 based stroker cranks won't fit, due to a few minor differences.

actually the cranks is forged and is the rods (coated at least) the pistons that are the weak point

 

[GTSpartan]

I bet these things will hold 550rw no problem. Really, the only semi-weak spot are the pistons, but they have oil squirters that should do wonders with keeping the temps down.

With cast pistons, it's all in the tune. Keep that detonation at bay, and the motor should be good for a lot of power.

 

[assasinator]

700rw or more. the evolution with 350 shot lived just fine.

 

[Carbd86GT]

JPC made 661 rwhp with a Paxton on their car, not sure what the norm is and how long one of these engines will live for at that power level.

 

[swoosh_stang]

I don't know if the rods are exactly the same or not, but the rods in the 5.0 are Forged Powdered metal, the rods in the GT500 are forged powdered metal.

It really is the pistons that are the initial weak spot, as said above, with the oil squirters and TiVCT, you can do a lot to avoid detonation.

It would not surprise me to see people north of 700 rwhp on a stock long block.

 

[GTSpartan]

One thing that needs to be said is engine longevity is totally dependent on intented use.

A dyno queen 5.0 with 600+rw that gets only the occasional romping will probably last a lot longer than a something with substantially less power that lives at the drag strip.