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[Essex_Andy]

the x25xe has a cams in all four only need to fit the g cams iirc its the c25xe you need to fit all four !

Other way round....X25XE needs all four C25XE needs just two

ok got me info wrong then ! but the x25 has a cams as standard  :-/

Typical I cant remember which way it goes but some people just change the exhaust or inlet cams and leave the other ones stock

But I havent seen anyone just selling a pair of inlets etc

[Marks DTM Calib]

the x25xe has a cams in all four only need to fit the g cams iirc its the c25xe you need to fit all four !

Other way round....X25XE needs all four C25XE needs just two

ok got me info wrong then ! but the x25 has a cams as standard  :-/

Typical I cant remember which way it goes but some people just change the exhaust or inlet cams and leave the other ones stock

But I havent seen anyone just selling a pair of inlets etc

The confusion comes about due to the C25XE (as fitted to the Cavalier and Calibra although some late Calibras got the X25XE from about 1997) having the A cams fitted.....like I said though, the X25XE does not.

As for which one gives the most benefit...read the Engine theory and you will soon sus it out (i.e. the inlet!)  

[MutantCav]

I have a set of good 3.0 cams here (inlet and exhaust cams) which are going spare...if anyone wants them then PM me

Approx +20BHP plus (I believe) more torque, although not sure on the torque increase...3.0 engine has about 60Nm more torque than the 2.5 so possibly a 30Nm increase in torque through 3.0 cams??

[kcl]

When putting 3,0/3,2 cams to a 2,5/2,6 engine, is there any need to re-map the ECU or anything else or is it just to put in the new cams? Are the valves the same all over the range?

Reason for this topic is that I'll have to take the cams off due to the stem seal -issue which is known for these 2,6 engines.

Has anyone had this valve stem seal issue on a 3,2 or is 2,6 different in some way? All I have read or heard have been on 2,6 engines.

[Essex_Andy]

I dont believe a re-map is needed for cam swap. The electronic wizardry should measure and adjust for mixture/knock etc.

Though I did go for a M-Tek 'power' chip any way

I doubt it would hurt to disconnect the battery overnight so the ECU can re-learn again from the 3.0 cams.

[Albatross]

Is there anywhere to go 'cam-wise' to add to the 3.2?

[Essex_Andy]

I think you'd have to go for after market items.

Cant think of a V6 Vauxhall/GM unit that is bigger than the 3.2

The Holden commodres (Omega floorpan) use small V8s

Depends how much wedge you want to spend................