Fastvette33

Wondering if I should do cam and springs first or a msd atomic airforce intake? What would need a tune afterwards -baller on a budget

C6z06man

Both would need a tune. Cam/sprimgs you'll see more gains.

martysauto

Intake 1st. The stock ls2 intake is not the best. I had an 06 A6 with similar mods, I did the ported fast 92 1st and the car ran great. You would want to upgrade the manifold when doing a cam anyway. Get it out of the way now.
Unless you decide to go FI.

Fastvette33

It's a 07 a6. I got longtube headers,high flow cats, exhaust, cai. Would the fast require a tune to function? I plan on getting a tune just don't want get a tune and a month later put in cams and springs and need a retune. I'm looking at then new msd atomic airforce manifold

Joe_G

I did a dyno overlay of all my mods from headers to heads. See below.

It's wise to remove airflow restrictions in the proper order, which is headers, then cam, then intake, then heads. Going out of order doesn't make sense, for example, Trickflow heads are great but on a stock cam they aren't the bottle neck so you won't notice the difference.

See how they stack up on the dyno, and note the last three only matter from 4500 rpm up. There is other good discussion in this thread as well so read on if you care to.

https://www.corvetteforum.com/forums...ast-heads.html

Fastvette33

Thanks I will Def check that out

ramairroughneck

It doesn't matter what order you do your mods. Keep in mind that a cam will have a lot bigger gains on a stock motor than an intake swap would on a stock motor. I can't really see the MSD Atomic giving you much until you have other mods to make it shine. Granted there might be a slight increase but you will need a dyno sheet to tell it. You will feel the powerband extended the first time you hammer down with a cam swap.

ramairroughneck

Personally, I would go with a stall first. Then cam, then heads, then Atomic

lowes48

Guys he said LS2 MOTOR...intake stocks is junk! Yes cam will net more power but a fast will still net 20hp on a LS2.

Mr.Nubain

Damn that MSD intake is a nice piece of work. A little too expensive for me though. I gotta stick with the FAST 92/102. Go with the intake before the cam, but if you can afford both, get it done, tune it and be done with it.

Sacred-Diesel

Or track down a LS3 intake and buy a cam.

xBoostx

Buy a 3,400 stall headers ls3 heads and intake manifold appropriate cam port throttle body slap it all in at ones and tune it.

Chokeu

You can just swap out LS3 heads and intake onto a LS2? Is that the difference between the LS2's 400 hp to the LS3's 430hp?

AJG87

Yes, LS3 heads and intake will swap over.

Edit-Misread.

Sacred-Diesel

Yeah I just changed my heads on my LS3 today to Prc 260cc, I forgot about the intake/head difference. Guess I should sell my old heads.

truckplay

unless you have other mods like headers & CAI, I would do the Intake 1st. The gains will be marginal, but the swap will take an hour or so. If and when you do a cam swap, the added volume of the intake will yield higher gains. Think of an engine as an air pump, the faster you get air in & out the higher output it will have.

CMY SIX

I don't agree! FACT 90MM WILL suport 1200HP. you have to butcher your fire wall to install the fast, 20hp? you WILL have to tune after you install, your right I've seen 20hp gains too BUT was it the fast or the tune? IMHO if you want to get the BEST HP for the buck SUPERCHARGE IT! 7-8 grand 200 HP. if you just want to get over 400 hp to the ground, cam it and tune, my 2006 MN6 LS2 Z06 exhaust system, roller rocker arms, K&N intake, just tuned 381 HP 378 TQ

CMY SIX

DUH? the LS2 is 6.0 L and LS3 6.2 L thats the diff

Fastvette33

Thanks for all the responses currently thinking cam spring install with torque converter and maybe gears with tune. Any thoughts ? I'll do intake later in year or next?

sallen619

You don't have to butcher the firewall to install a FAST 102.