Crimsonpanther99

I'm setting up a plan to cam my 2004 GTO and would like some help to make sure I don't damage anything by running too high lift.
Can anyone tell me if there is enough clearance to run this setup?

BTR Stage 3 cam ( 231/242 .617"/.592" 112+2)
BTR .660" platinum springs with titanium retainers, standard size locator and stock guide size
And (GM) shaft mounted 1.8:1 roller rockers http://m.ebay.com/itm/GM-LS1-LS2-LS6-Shaft-Mount-1-8-Ratio-Aluminum-Rocker-Arm-System-/181989526397?nav=SEARCH)

Trying to avoid having to machine anything.
Goal is to create as much power as possible without having to sacrifice too much reliability.
I'm shooting for 425+HP on stock heads (eventually upgrading to TFS 220s) and rotating assembly before spray.
Thanks in advance!

elephantrider

iTrader: (2)

you wont have any ptv issues with that cam, but your not going to do much
with factory 241 heads with no work done to them. you may get to 400
wheel.

..and why go with roller rockers ? factory rocker arms with at least a
trunion upgrade would be a better bet.

Crimsonpanther99

Basically upgrading to shaft mounted roller rockers for the higher ratio to get just a hair more lift

At least that's the way I was thinking it would help.

Omega Doom

iTrader: (2)

no need for the rocker upgrade and with a good TUNER you can get past that 400rwhp mark even with the 241 heads

Crimsonpanther99

But wouldn't higher ratio Roller rockers help pull just a tad but more power by getting just that little more lift?