2006gtmike

I'm looking to add more power but do so without increasing the boost.

This car is a daily driver so take that into consideration as well.

I know I should do BOTH but if you had only 1 option which would you install first?

Simon1

Personally, I would do niether and save money for a built motor. Sorry I can't help out your poll, but with the stock motor, you can max it out on boost alone.

After that, I would get the exhaust done (long tubes) and the heads ported with bigger valves. The stock sticks are damn good. There is some to be gained from replacing the cams with some more aggressive cam profiles, but the large gains don't really happen until FI comes into play.

If you get cams now, you may need to switch them out later for the best performance.

If I had the money set aside and knew I would never have enough for a built motor, I would put long tubes on.

howarmat

i agree, you are looking to break something sooner or later by adding more ontop the whipple without internal upgrades

solidsnakegt89

I agree build the motor or your driveline if you like going to the track a lot. BUT if your set on getting cams or headers and no one is gonna change your mind then i say get the headers. I installed a set of Dynatech LT headers and i hollwed out the cats that they sent me and they sound great. I also have a whipple that I installed too. It sounds pretty good with that combo. You should get a little bit more tourqe out of it too with the headers installed and a good tune.

07 GT E UPP

LT Headers and then Cams.....!!!
You will love them both !!

SpeedingBullitt

Your probably safer getting LTs. You can pick up some extra hp and tq but its only minimal at this point. I agree with the OP about beefing up the internals before the cams. Good luck

S281 E

I would also suggest saving for a built motor....but if you can't wait than LTs.

BRENSPEED

You will see more gains with a cam but LT's are also nice. Our custom blower cams are designed for twin screw applications and gain 30 rwhp. There is also a slight lope with them. They are a NSR cam so only a cam phaser bolt's. Both are great mods to reduce restriction and reduce stress on the motor.

http://www.brenspeed.com/127bren2.html

onederful100

go with the LT's first
i'm assuming you are running the stock block
the LT's will add a little hp and make your engine more efficient with the Whipple
you may actually lose a little boost but gain a few hp
save the cams for when you build the block, unless you do it all at the same time.

solidsnakegt89

Funny you say that about loosing boost with the LT's thats exactly what I thaught with my 11-12PSI pulley on my whipple. Turns out after the Dyno Tune it was pushing 13.4PSI of boost.