whats next

[motox75]

hey guys i got a supercharged vt 99 model running 10 psi was wondering what is next for more speed i heard rockers r a easy way 2 get more power if so what sort and size and where to get them . geting a cold air system soon and want to put cams and chip in any ideas on what cam and chip package i should put in .
cheers guys
jeff

[acarmody]

You must choose rockers that will go with whatever cam you choose. Can't just slap any set of rockers with any cam. But yes rockers will give you more power now.

Also why are you getting a cam and chip package, you must have the computer already modded to run the supercharger. So just get it retuned when you get the cam, no need to buy another chip that will have to get reprogrammed anyway.

[TI3VOM]

acarmody you just beat me to it.

[motox75]

ok what cams and rockers should i use

[acarmody]

I'm not too up to date with cams for supercharged cars, try talking to Steve at MACE.

This is on the MACE webiste, COMP Cams to suit Holden Supercharged V6 - MACE ENGINEERING GROUP

Stage 2

With an M90 supercharger supporting mods and a 3.0" pulley this cam is capable 200kW at the wheels non-intercooled, and over 230kW at the wheels intercooled. Raised shift points (6400) and rev limiter (6800) is recommended. Please note that these figures are with standard cylinder heads.

Highly recommended supporting mods for this cam would be:

* Rollmaster double row timing chain set
* Crow Cams 105#
* Manley retainers

Note: This cam (and any cam with a lift of over - .515) requires upgraded valve springs and modified/low profile retainers for safe long term operation on stock heads. You can run higher lift than that with stock valvetrain but you're asking for trouble. Down the road you will be using oil as your valve seals become prematurely worn.

Look for gains of 30-40kW depending on your car's current configuration.

* 212°/224° at .050"
* Intake Lift .325" (.520" lift at 1.6:1 rocker ratio)
* Exhaust Lift .335" (.536" lift at 1.6:1 rocker ratio)
* 116 LSA

You could upgrade the rockers but this cam has a fair amount of lift. Maybe go 1.7:1 rockers if you want too.