What are the standard 2.5 engines good for power and torque wise?

And forged?

 

my forged closed deck 2.5 (14mm head studs) is running 531bhp and around 700nm of torque ,, ,from memory the standard one are good to around 380bhp

 

as domino says, depends on spec. i wouldnt push much beyond 350 on the stock engine.

Standard pistons are a risk above 350, rods are a risk above 400, blocks ok up to 450.

Closed deck the block, decent rods and piston, bearings, headstuds and hedgasket and you'll be fine at 550.

 

Beast!

 

You can push your 2.5 over 500 bhp but how long it will last thats the question ^^ I have been told max you can push your 2.5 forged engine to 500 bhp thats the limit......

 

i wouldnt wanna push a normal block that far

 

mines been running 530 for a while without any problems and the engine builder and mapper have said 600 wouldn't be a problem either if I wanted to go that high

 

Well how many miles you done so far? my 2.5 forged engine went after 15,000 miles which wasn't bad at all but I was only pushing it to 430 bhp no where near 500 bhp

 

we've drifted from the original question though. Aren't we talking about closed deck, 14mm headstuds etc etc now?
Trev

 

I think so fully forged 2.5 engine

 

I have a linered and pinned 2.5 but with 11mm headstuds. It made 507hp running nitrous, that's about it's limit with those headstuds.
Trev