I know the 2.5 vectra gsi comes with 2 G cams and 2 A cams buts again thats a vectra....
I just seen a youtube video with G cams in the 2.6 Vectra and it idles fine and pulls great when at 4000rpm, here is a chart of the differences on vectras:
Engine Plan - Y26SE - Development Number 1345456555 GM CODE MBK26VEC1
Capacity - 2597cc Max Power - 171ps@5800rpm Max Tourque - 203 nm (179.7lbs ft)@ 4000rpm
Cam Directive - Block Number 5565454 - Cam Code A Bank 1 Cam Code E Bank 2
Modification Plan - Y26SE - Development Number 667656553X GM CODE MBK26GSIP
Capacity - 2597cc Max Power - 194ps@5700rpm Max Tourque - 299 nm (209lbs ft)@ 4000rpm
Cam Directive - Block Number 654778X - Cam Code G Bank 1 Cam Code G Bank 2
Modification Plan - Y26SE - Development Number 99656534555 GM CODE MBK26GSI
Capacity - 2597cc Max Power - 180ps@5700rpm Max Tourque - 274 nm (202lbs ft)@ 4000rpm
Cam Directive - Block Number 6554542 - Cam Code A Bank 1 Cam Code A Bank 2
top plan is what the non Gsi's have A's and E's,
Second plan is what the Gsi should have had, 4 G's.
Third plan is what the Gsi actually has, 4 A's.
The theory I heard about the reason the Gsi got A's instead of G's was that the power and torque figures with G's was too close to the 3.2 in the omega that vaux put the brakes on. They worried everyone would save 3k by buying a 2.6 omega and putting G cams in instead of buying the 3.2!
Hoping someone can point me in the right direction, I own a 2.6 Vectra GSi, have been told by a few people a good upgrade is getting "G" cams from a 3.0 V6 omega, does anyone know where I can source these from, or part numbers?
Also does it make a difference what year the car was, or are they all the same?