What's the most and safest WHP my stock engine can. Handle 2006 evo ix gsr ?

 

400

 

400 WTQ is what most consider the stock rod longevity limit.

Horsepower seems to be whatever you want as long as you manage the torque.

This is more of a guideline than a hard rule though.

Around 450/400 and enjoy it is what I'd do. If you want to be safe, barneyb is spot on.

 

^ yup


my bro made 600hp but torque was controlled

 

what fuel setup and turbo for that power?

 

fp black, e85

 

500whp and 400wtq with a proper setup is a good recipe for fun and reliability.

 

BB? MHI or SS? just curious because i am on e85 MHI black and tuned for 520 whp/386tq . Just comparing to similar setups

 

he said jb and internal gated

 

sorry 560 fp black 660 on a 6466 stock block

 

My DBB FP Black with SS hot side made 554 whp , 429wtq on 93 octane and 50/50 Water/Meth injection. The WTQ although not way too extreme, i want to bring down to 400 or below so I took out the meth and will probably retune to whatever i can squeeze on 93. The previous owner said switching from MHI to SS net him a huge gain.

Back on Topic...

Also sometimes its not just about the “magic” 400 WTQ number, its also where in the RPM range you hit the HP/TQ. That 400 WTQ might be considered limit for the safe side, but you dont want 400 WTQ at 2.5k rpms. The higher in the RPM range the torque is the “safer”.

Here is the Dyno Graph. Per the previous owner the below graph was on a hot humid day and made even more power on cooler days.

 

I've seen 500 on a stocker last for a long time.

 

It all depends on how well it's tuned.
If it's tuned badly, it'll break at stock levels.

It should be a bit more than 500 at the flywheel.

 

Yep 500hp and 400tq seems to be the sweet spot. But at the end of the day, you’re tune or tuner is going to determine how long it can live at that power level.

 

500/400 seems to work for quite a number of friends.