max rwhp stock 5.0 internals

[Eleanor05]

I know that the 4.6 max rwhp on stock internals safe would be 475rwhp. What would the 5.0 max rwhp on stock internals would be safe at?

 

[KungFuHamster]

hmmm. i thought this was discussed many times over now...we wont know till people start blowing them up. we can only speculate.

 

[Riptide]

I didn't know that the 4.6 3v internals were all safe up to 475?

 

[Matt D]

Yea... how can anyone know yet... lol

 

[19COBRA93]

I didn't know that the 4.6 3v internals were all safe up to 475?

That's about where mine blew up. However, I'd still say it's probably a fair average of "safe". Some may blow sooner, some may blow later, but overall, I'd say they'd be pretty safe up to that point.

And yes, no one knows the limits of the 5.0L just yet.

 

[GrnBullitt08]

hmmm. i thought this was discussed many times over now...we wont know till people start blowing them up. we can only speculate.

Yup, nobody is really sure, they just came out. Give it until the end of summer and let some people blow a few up....

 

[KungFuHamster]

ill say this...im confident that 490-500 will be a good number from what ive read and see thus far.

 

[beefcake]

i've seen guys pushing 500 and living with a good tune.

i'm thinking with the bigger motor, higher revs and heads, probably 520 ish

 

[Mishri]

in that livernois thread it looks like the rods are still toothbrushs though.. which is what always went in the 4.6L.

 

[US-1]

Stupid Thread #6,504.

 

[19COBRA93]

in that livernois thread it looks like the rods are still toothbrushs though.. which is what always went in the 4.6L.

They're thicker/better toothbrushes though.

 

[Mike@PowerHouse]

The additional rpm actually works against the cause.....

 

[19COBRA93]

The additional rpm actually works against the cause.....

True, but so far they're proving themselves to be reasonably stout.

 

[fdjizm]

I have heard that 450wrhp is the safest on the 4.6 when did it go to 475? lol

 

[Department Of Boost]

I know that the 4.6 max rwhp on stock internals safe would be 475rwhp. What would the 5.0 max rwhp on stock internals would be safe at?

6900rpm and powdered metal rods (I think). I put my money on 500rwhp max.

Looks like putting a blower on the new 5.0 will cost $12K+ by the time the bottom end is paid for.

I speculate there will be far more 450hp 3v’s than 5.0’s running around (taking production time into account).

 

[Mishri]

hmm but isn't whipple saying stock engine @ 7psi 600hp? (and those cars probably have so little DT loss that would be like 540whp) even if you did factor larger DT loss its probably 510whp... if that is with the whipple tune and you can get a warranty with it.. not bad..

 

[Mike@PowerHouse]

True, but so far they're proving themselves to be reasonably stout.

Agreed, but two or three cars with a 125 shot of nitrous, owned by shops that are using race gas under mostly controlled conditions does not make a good example. We ran a stock 3v to 600rwhp over the course of 2 race seasons. It lived because we used $11/gallon fuel.
The fact of the matter is the rods are the same basic material construction of the 3v, the piston is the same basic material as the 3v, so in turn with the exception of a rod that may be slightly stronger by design (slightly meatier)will have a slightly higher failure point assuming the same conditions. However the conditions are not the same as the 5.0 does truly like to be near RPM. Making power boosted, or sprayed at that rpm will eventually fatigue the rod. Especially when attempted by the common man on regular pump fuel.

I say that under conditions that most board members expose their car to the engine will fail at power levels near 450....But it will not be uncommon to to see it a bit earlier.

Folks need to keep in mind that the two fire breathing, nitrous snorting cars that are out running around right now are run under controlled conditions, the fuel is from a known source, All of the temps are kept at bay, and the runs as well as the track they are running are selectively chosen. Until there is more data these two in particular are as much as anomalies as they are the rule.

 

[JJ@WMS]

Agreed, but two or three cars with a 125 shot of nitrous, owned by shops that are using race gas under mostly controlled conditions does not make a good example. We ran a stock 3v to 600rwhp over the course of 2 race seasons. It lived because we used $11/gallon fuel.
The fact of the matter is the rods are the same basic material construction of the 3v, the piston is the same basic material as the 3v, so in turn with the exception of a rod that may be slightly stronger by design (slightly meatier)will have a slightly higher failure point assuming the same conditions. However the conditions are not the same as the 5.0 does truly like to be near RPM. Making power boosted, or sprayed at that rpm will eventually fatigue the rod. Especially when attempted by the common man on regular pump fuel.

I say that under conditions that most board members expose their car to the engine will fail at power levels near 450....But it will not be uncommon to to see it a bit earlier.

Folks need to keep in mind that the two fire breathing, nitrous snorting cars that are out running around right now are run under controlled conditions, the fuel is from a known source, All of the temps are kept at bay, and the runs as well as the track they are running are selectively chosen. Until there is more data these two in particular are as much as anomalies as they are the rule.

Very well put Mike.

As impressive as the 10 second times are with these brand new combinations what most everyone that will modify their own particular 5.0 will want is proven and reliable products that are worth the hard earned money spent on them. I look forward to doing alot of testing on our own 5.0 and giving unbiased real world results.

JJ

 

[US-1]

I know that the 4.6 max rwhp on stock internals safe would be 475rwhp. What would the 5.0 max rwhp on stock internals would be safe at?

Objection Your Honor. Calls for speculation. Move to strike.

 

[TurboX]

Stupid Thread #6,504.

^^^^^+1^^^^^^