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[omgj]

Hi, guys ive just put some piper cams into my 3.0l and now i dont seem to have any instant power, before i did the swap i could spin the wheels all through second gear and now it wont!? getting annoyed with it as ive spent loads on cams etc! any help or insights would be much appreciated, i had the heads skimmed and did the headgaskets, all new gaskets, and cambelt waterpump etc.. and it has been chipped. all was running fine and very well until it let go and i haved used all the same bolt on bits from the old engine with a new block
it feels like the early stages of a crank sensor failure as in theres no immediate power but it does still pull if you rev it through the gear, although does feel like its holding back, but when you change up it feels flat again for e few seconds then picks up!?
Any ideas people?

[tigers_gonads]

What cams have you fitted ?
It should be noted that some higher lift cams will give you more power up at the top end but screw up the bottom end torque. This along with (maybe) the multirams not working properly and the cam timing out will make a 2 ton car feel very slow 
How did you lock off the top end ?
Did you use the correct lock off kit because it is nigh on impossible to get the tension right and time a v6 up accurately 
Any codes ?

[Kevin Wood]

Yep, it's always a compromise with cams. You will lose low end torque for gains at higher revs. Those gains will only appear if the engine is able to breathe well enough to realise them, so you might well have to port the heads and improve the exhaust and induction systems. 

Then you have an engine management system that wasn't mapped for the configuration you have, so that can cause issues..

But.. often aftermarket cams need to be timed differently to work at their best. You can time them according to the manufacturer's timing marks and the engine will run, but depending on how they are ground you may well need to adjust the cam timing on a vernier pulley to achieve the settings at which that cam will work best. If the cams have just been timed as standard I wouldn't mind betting that the cam timing is not optimal.

[Marks DTM Calib]

So the setup you have is as per the proven setup in the previous engine before failure? (e.g. its a proven working setup).

I would expect a modified cam to have more duration and overlap (no point in going higher lift as the standard 3.0 cams already run to the optimum lift value).

Did you mix uo the exhaust and inlet cams (or are they both the same)?

Are the multirams working ok?