Looking for some input.

Whats the biggest cam you would put in a stock Z. Untouched heads, stock exhaust. I'm looking for lope and a good howl at WOT, but trying to avoid excessive decibels which is why I dont want LTs. I just want it to sound tight and tuned with some improved grunt down low.

I ran a symetrical 221 575 112 in my 98 and always wished I had gone a tad bigger. I know there is probably a limit on how big you can go without the exhaust/heads limiting the results though. I was thinking low 230s duration and around 600 lift on a 112, but would something closer to 240s be over the top?

Thansk in advance for any input

 

Stock cam

with any new cam change you will need new springs, new push rods, New timing chain, and a tune.

 

if I wanted to go really big probably 240s, but to get it to run right, you'll need a lot of exhaust split to compensate for the stock exhaust.

 

I know all that. Thats fine, but I'm not looking to change the exhaust or heads.

 

So you think something like the TSP 233/239 595/603 112 or a Futral F-15 236/239 600/611 would fit the bill?

 

the longer the duration the more challenge there could be with Piston to Valve clearance

http://www.camshaftshop.com/camshaft...alve-clearance

http://forums.corvetteforum.com/c5-t...-question.html

http://www.gmhightechperformance.com...ech/index.html

 

Good info, that was exactly what I was reseaching tonight. How big I can actually "Fit" without pulling the heads to flycut

I'm trying to keep it simple.. since I'm going to try to sneak this cam in while my wife is away on vacation for a week She is....squimish when she sees my cars guts all over the garage. Especially one I jsut bought 2 weeks ago

 

Livernois Motorsports has a Comp Cam; 228/228 by 566/566 at 114 thats suppose to work well with original springs and pistons. Should pep it up a bit and have real nice driveability. Later if you wanted to add headers, catback and CAI, it should make a nice all round package.

 

A little digging around on LS1tech shows alot of guys running that TSP cam with no flycutting needed. So maybe I'll just stick with that or smaller

I want to go a bit bigger than that. Its gotta be a 112 LSA for my lopey idle. And I want to change springs anyway for insurance, so I dont mind going with some more lift

 

Youre leaving far too much on the table not going with long tubes. I wouldnt go through all the trouble of getting more air in and not being able to get it out.

 

The OP may want to consider some B&B shorties or even a set of stock LS7 manifolds if you want to stay stock appearing and keep the db's to an acceptable level for yourself.

http://forums.corvetteforum.com/c5-z...-shorties.html

 

I've already had a Heads, cam, bolt-ons, procharged C5. Maximum power is not my goal with this car. I just want to give it a little more attitude at idle and WOT. Surely there is a point where a midrange cam can be beneficial before the stock Z06 exhaust becomes too much of a restriction. I'm trying to hit that point.

 

I wouldn't run anything more than a 224 degree duration w/o headers imo...the car is going to loose bottom end with a big cam, because of less dynamic compression and there will not be the same scavenging effect without the free-flowing exhaust...lope is the amount of overlap which you'll get more of with a narrow lsa, but you can also tune it to shake more with timing, fuel and idle speed.

 

Well you guys beat me into submission I just purchased a 228/228 604/604 112 cam. But I'm going to comprimise and throw on a set of shorty headers to help flow.

Hopefully this setup with my Ti exhaust will give me enough torque and attitude, without being as loud as my 98 was was with 221/221 575/575 112, LTs, high flows and Stingers.

Thanks for all the input!

 

a cam isn't a music instrument

 

True. But admit......it is music to your ears

 

You are right, it isnt. However there is a huge difference in the sheer sound volume of a stock Z06 and one with a huge cam, long tubes, no cats and borla stingers. I'm simply trying to find a happy medium this time around. If I can gain a bit of power without having to wake up the neighbors everytime I come home at night I'm happy.

 

Shouldn't be anywhere near that loud with shorties, stock cats and Ti mufflers.

 

Agreed, I have long tubes w/ cats and TI exhaust and you can't even tell my car isn't stock, then again it's only a 218/230 .605/.604 116 sleeper cam...it does make some noise when you put your foot in it tho

 

I hate to point out the obvious, but comparing your present ride with your 98 that had Stingers......What I'm saying, is your catback is where the noise came from, not your headers. Yes, a larger cam will increase to sound level a little, but if you just add catted LTs/X pipe, and your stock Ti catback, it's gonna be minimally louder than stock. My vote/opinion is the above combo, with a 224-230 with around .575 lift, and a LSA of 112-114+3 will bring you much happiness. Man, Stingers are really loud compared to the Tis. The two-tip Stingers were one of the four catbacks I've tried on my Z.