30th TA 0219

Trying to help my friend with hsi next mod, so here's the deal:
2001 C5
A4 with 3500 convertor
3.42s
Breathless intake
TPIS headers, catted X pipe and Corsa exhaust
The car has nice mid range and top power already, but it's time for more
Thinking of cam only for a while, any suggestions?

Z06-Dave

I installed the X1 (230-228) in my Z06 last weekend and it picked up 43 HP and 41 Torque. It's not that big of a big cam but has nice lope and great power. It sounds mean idling, I got the 112 LSA. Doesn't stall and AC seems to be fine.
I have headers intake and exhaust, I hope to run low, low 11's
There are tons of cams to choose from, whichever one you pick make sure its at least a decent size, it is not worth it to crack open the motor for minimal gains. Good Luck, picking a cam is tough, it took me a while. I chose one pretty much between big and small.

30th TA 0219

well, I'm trying to talk him into going all out..H/C or FI, not just cam only. It is nto driven daily, but when it is driven it is in traffic etc, so drivability is a must. Remember it's an A4, and in Florida, so the AC will be running too. Can't have a Vette stalling out and people laughing!

DBN

iTrader: (6)

I have been running one of CNC heads cams in my auto vette for about three years. It is a 224/228 112. I drive my car around town, on long trips, and drag race it. The cam works great! Call pete at CNC heads in St. Pete, FL. He offers two 224/228 cams. You might want to get the one that is on 113.

White 02 WS6

Check in to MTI's G1 cam 228 232 113 lsa I personally watched a 01 SS camaro with a 3200 yank put down 403 with the convertor locked...Wasnt as quite as choppy as my car (X1) but it sounded really good...

zo6vetteman2003

iTrader: (1)

Without knowing what your friends preferences are for how much lope and drivability issues he can stand to take on, a first gut reaction selection for me was the GMPP HOT Cam #1248033 219/228 .525/.525 112LSA designed specifically with an LS1 in mind. Upgrade that valvetrain with LS6 springs and a set of comp 7.4" chromemoly rods and leave the stock rockers alone and she'll be good to go.



That cam sounds about right too 224/228 112 or 113

H-5-L

The stock LS6 cam is actually larger than the LS1 hot cam.I bought a LS6 cam and complete titanium valvetrain,springs,retainers,pushrods etc.. for $300.Only thing i don't like is the LSA is 117.5.I haven't installed it yet as i'm waitng for a couple more items.
I have an auto and will install the LS6 cam 4*adv.I can now raise the Rev-limiter to 6300rpms,and the titanium should allow for faster revs,i wanted to go a little bigger with some chop,but 300 bucks complete was a deal i couldn't pass.The parts have 3000 miles and i know the car they came from.
Heres the LS6 cam specs.

LS6 Camshaft - 204/218 .551/.541 117.5 LSA Please note that this cam has approximately a 0.050" smaller base circle than a stock LS1 camshaft. This smaller base circle will require longer pushrods for applications with stock length valves and no milling for the head surface

zo6vetteman2003

iTrader: (1)

I do not know what vehicle and year you have. Yes, you are right about that note. I have seen it in the Will Handzel How to Build High Performance LS1/LS6 V-8's. The smaller base circle was a correction in valvetrain geometry, because the 02-04 ZO6 uses .6mm longer hollow stem valves and has a .025 increased valve lift.

Do's and Don'ts
If you own a copy of the April 05' issue of GM High-Tech performance magazine, you will see on page 54, a 2002 T/A with the same GMPP Hot Cam running stock 7.4" pushrods and rockers. The note regarding the ZO6 cam is accurate, but doesn't apply to the hot cam. Anyhow, always, whenever going to a larger cam, replace the stock pushrods with a more robust aftermarket pushrod. (Not like that guy) The Hot Cam is larger than a stock LS1 cam and the hot cam is what I recommended initially.

You can raise your rev. limiter to 6600rpm BTW. I would verify which years ZO6 cam you have, and make any corrections needed to pushrod length as you know, but be careful with a longer pushrod, because P/V clearence issues come into play. The 117.5 LSA will give you good drivability without big idle issues. If you have ETC (electronic throttle control) it will make your life easier for good idle quality.

The 02-04 ZO6 Cam is GM P/N 12565309
The 01' ZO6 Cam is GM P/N 12560950
The GM Hot Cam is GMPP 12480033 (The one I recommended initially)

H-5-L

Thanks for the input.

It's a 2003 LS6,3000 miles from a buds car,i have the whole valvetrain,the pushrods retainers,springs etc..That way the geometry is just as it was in the LS6.
My car now (99 auto 3:15s) idles perfect at 625.Anyway to get any kind of lope out of the LS6 cam without dropping the idle below 600rpms?
Ya,all c5s are fly by wire.But easy to tune,i'm on another site (not corvette forum) and theres a killer video section,some seriously awesome sounding cars,with hella choppy but rock solid idles.8 and 9 second cars,no-mercys old zo7 is on there,a whole section of just dynos and idles.Music to my ears.Then there the street racing vids..Sorry..carried away..

The 99 stock cam is like .479 intake 479 exh,so for 300 bucks for everything,i couldn't pass up the LS6 cam .551int/.541ext.The torque curve is nice also something not mentioned here yet.I love choppy idles though..
Mahalo.

zo6vetteman2003

iTrader: (1)

That 117.5 LSA is hard to lope. I would just keep your idle at 625rpm. You may want to upgrade your injectors too big difference in power.
I would recommend a 30# injector bench tested at 43.5 psi. With 58 psi fuel pressure, it is like a 36# injector good for +440hp.
I belong to corvettekillstories.com if that is the website.

H-5-L

I agree,injectors and intake will be swapped too.Coil relocation and other pretty stuff too.I have to live with a stock idle and loud exhaust i guess,i love choppy,but i'm a realist too....Thanks for your advise man..Much appreciated.I owe you a beer..

zo6vetteman2003

iTrader: (1)

I had a 99FRC C5. I did some editing above, so take a look now that I know what car and year.

30th TA 0219

hmmmmm...well let's put it this way, in the 80s he drove a 4.88 spooled alky carbed Art carr Clutch 400 500+ci BB Camaro as a daily driver lol
Then he had a crazy modded 86 Vette (11.94 on ported stock intake) in 87, when nobody even understood TPI cars excetp Myron lol
He can make a few driveability sacrifices