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[stuthespread]

if i were to change my 2.5 cams for 3.0 cams would there be any significant improvements to power etc.?

[HerefordElite]

yes

http://www.omegaowners.com/forum/YaBB.pl?num=1152565319

[stuthespread]

would i need to replace anything else at the same time?

[MutantCav]

Need...No lol Got some here if you decide to go for it...

Although if your cambelt/tensioners not been done for a while or you dont know when it was last done its worth doing at the same time as you have to have the belt off anyway...and waterpump as easy access at that point and only £20 or so new  

[stuthespread]

cambelt done 13k ago,waterpump replaced at the same time.

[MutantCav]

Then no lol Anything else you might want to change is simply out of a while I'm there basis, oil cooler for example as your pretty much there, but nothing needs changing apart from the cams themselves...

Suppose gaskets would be the only other consideration, cam cover gaskets etc...but again only if they need changing...

Timing has to be spot on after  

[stuthespread]

excuse my ignorance but would the coolant etc need draining?i'm pretty limited to time scale too as i need to use the car on a daily basis as my mrs has a badly broken leg at the moment and i'm the only transport we've got for the next while.

[MutantCav]

Dont think so...need to remove the plenum, cam covers, multiram and cam belt cover think thats it from memory...

[amba]

I upgraded my cams when we last did the belt/tensioners mid last year..did the water pump at the same time and found it wise to also replace the cam seal gaskets as wanted to ensure no problems when all went back together.
Have noticed a fair difference in performance especially when you hit 4k it seems to behave like a different car...not a 10 year old armchair.!!!.worth the effort in my opinion.

[Marks DTM Calib]

Replace the lowest section of inlet manifold if you can at the same time

[Martin_1962]

I upgraded my cams when we last did the belt/tensioners mid last year..did the water pump at the same time and found it wise to also replace the cam seal gaskets as wanted to ensure no problems when all went back together.
Have noticed a fair difference in performance especially when you hit 4k it seems to behave like a different car...not a 10 year old armchair.!!!.worth the effort in my opinion.

What is it like below 4000rpm as I am thinking of doing my 2.6 auto

[ngrainqey]

I upgraded my cams when we last did the belt/tensioners mid last year..did the water pump at the same time and found it wise to also replace the cam seal gaskets as wanted to ensure no problems when all went back together.
Have noticed a fair difference in performance especially when you hit 4k it seems to behave like a different car...not a 10 year old armchair.!!!.worth the effort in my opinion.

What is it like below 4000rpm as I am thinking of doing my 2.6 auto

dont think there's much point puttin the 3.0 cams in the 2.6 martin from a thread i read about the bottom end being possibly slightly worse for torque (it'd be ok if you towed the caravan in sport mode lol)

[MutantCav]

Replace the lowest section of inlet manifold if you can at the same time

Have this too for a 3.0 if needed/wanted  

[Martin_1962]

I upgraded my cams when we last did the belt/tensioners mid last year..did the water pump at the same time and found it wise to also replace the cam seal gaskets as wanted to ensure no problems when all went back together.
Have noticed a fair difference in performance especially when you hit 4k it seems to behave like a different car...not a 10 year old armchair.!!!.worth the effort in my opinion.

What is it like below 4000rpm as I am thinking of doing my 2.6 auto

dont think there's much point puttin the 3.0 cams in the 2.6 martin from a thread i read about the bottom end being possibly slightly worse for torque (it'd be ok if you towed the caravan in sport mode lol)

Already do

But cruising on mways it is in top at about 2500rpm AFAIR

[osealy]

A punter in latest ABS mag's 2.5 with 3.0 cams was much stronger than a lot of 3.0's on rolling rd 215bhp 225lb ft.