Ive been reading alot of posts on various forums, mostly about cams and various types of cams/heads set ups. this SEEMS to be the next logical step in tweeking the car. but i though ide throw it open to you guys to see what suggestions come up?

Start at teh start:
cars a 2003 Z06, Dynatec powermaxx system - http://www.allhorsepower.com/SupermaxxCorvetteC5_1.html ( long tube headers, cross pipe, high flow cats ) with stock titanium back boxes. also has Vortex cold air intake, high flow C/F Air bridge with smoothie coupling and a tune.
I recently posted up the dyno printout from the car, although it seems either the transmision losses are wrong or its a 'mustang dyno' (which ive never heard of over here in N,Ireland. lol)



Im heading to vegas in 4 weeks, so if im getting anything, ill try to sort it before then, so as i can get it delivered to where im staying, saving me the postage to n>ireland. but what exactly do i do?

Is there any tuning route which ive missed out, is there somewhere my moneys better spent? my budget is around $1000-1500 my understanding is for this, i could get the likes of a G5x2 cam, comp valve springs, and an adjustable, double timing chain for this, then possibly, get the ECU posted to get tuned somewhere in the USA and sent back to me?

If i could pick where the power was, truthfully, i woul
d say i want it further up, say over 4000... but at the same time, the car performs rather well low down, around the 2500-4000 range, which i dont want to lose. cams seem to MOVE power, rather than MAKE it?

Im not a plonker, but a fairly hands on type of guy, so although i dont really understand such tecnical things as cams 100% just yet, i can learn, and will be doing this work myself, with the exeption of the tune or any particularly delicate/precise things, which i may get help for.

So.. what the opinions.. where do i go from here for my power????

 

If I could start over I would go FI in the turbo flavor.

 

Get your heads ported and pollished. $1500 into your #243 heads should net you good gains over your stock heads. Then do a cam.

 

I was under the impression that the LS6's heads were pretty healthy as they are and if deep work was to be done, the cam was a better, or more efficient power option?

 

TT


But I am biased

 

lol, not looking for that kind of hastle, i was debating spending the money of a supercharger, but it seems like a alot of work to do, big money, and ive heard about gear box's not taking this kind of big power gain over stock... and i CERTAINLY dont have the money to do a gearbox.. never mention the postage to Ireland! lol

 

nitrous

 

I would tend to agree as a car witha healthy cam in it, I wish somedays I would have just done a ttix kit.. of course i've got less than $1600 into the cam, and I can make more power with a simple head/intake upgrade when i'm ready..

 

dont have the money for F.I route.. and the likes of a strker kit seems to be bif money too. so this is why im thinking heads or cams. but i was under the impression the LS6 head was great, not worth changing under around 500HP. which im nowhere near. so i though a well tuned cam would be the next step... but before i commit to getting one sorted and taking the time looking into wwhich one exactly i want, i wanted to check that you guys who know these cars better then i do would agree?

 

I have had two cams one mid size 230/224 111LSA 575/565 very early grind which ran O.K. With stocK heads LS6 intake and headers I dyno'd in the 370 RWHP 365 RWTQ and with the reverse split and low LSAthe idle was great. The second cam I installed was an EnglandGreen Whiplash Rev 1 stick. Grind and numbers are proprietary but I know the cam is in the low 600's lift and duration is in the 240's 113 LSA. This netted 400 RWHP 370 RWTQ. This cam maxed out my stock injectors never really had the tune correct due to injector size. The next addition was 243 casting stage 2 Patriot Performance heads. This latest addition changed the numbers to 421 RWHP 402 RWTQ. I also added 36LB injectors also. I am still working on the tune so I am hoping to get a few more ponies with the tune. Last trip to the track I could not get any grip and ran several 12.0-12.1 at 119-120 MPH for reference.

As I look back with the two cams, injectors, Vararam, LS6 intake, tune ETC leads to my initial post. FI would be choice for the second chance. Please do not forget that anything past LT headers will quickly overpower the stock clutch if you have a manual car.

Good luck and keep us posted...

 

HAA!!!! I also have the ENGLANDGREEN whiplash cam!

I have:

-Patroit Performance Stage II heads 11:1 CR
-42 lb/hr fuel Inj
-Home ported Fast 90 and Home ported 90mm TB
-Power Bond Harmonic damper
-Stainless Works 1 3/4" primary heades with 3" exhaust system/high flow cats
Vararam VB2
Caddy racing lifters & 740 pushrods
TUNE!! With EFI Live by my Buddy Billdog350

With the above MODs, I got 450 RWHP My mods smoked my clutch so, I cant give you an accurate TQ number. It flatlined at 400 ft/lbs

Something is very wrong with that printout. TQ significantly dropped of at 4800 rpm. Thats just not right. Bad valve springs are something to look at.

Heads and valve springs seem like they would fix that issue. A cam would need a tune and new fuel injectors.

Do all your MODs at once and get a good tune!

BC

 

A Good cam, I am thinking the Tsunami (massive) from TSP or the MS4 they are bad *** cams(385.00). Your heads should be fine you may need a upgraded spring set (200.00) and some new push rods( 140.00) and if you are up to it a set of shaft mount yella Terra rockers(450ish.000. The F.A.S.T 92mm intake with the 92mm Throttle body (1250.00 with all the needed parts) will put you up around 480 to 510 rwhp all this with a install will probably run you close to 2800.00 with a tune

 

YOU SPENT 1600.00 ON A CAM AND INSTALLATION? Hope it netted you over 110hp.

 

Thats some great help guys. this is the type of info i was looking for.
But in these cases, is it still not a case of increasing peak power and shaving it from the lower TQ band?
Also, i didnt realise the clutch gave so much bother with around 400RWHP. i would have thought it was capable of around 450RWHP. .. and im sure doing a clutch in one isnt the handiest... but i guess thats just the way it is. although i havent had a single bit of bother with mine so far. although the cars onyl got 9000 miles on it, so perhaps its a fesh clutch with plenty on it, maybe helping who knows for sure.
But thats down the line, ATM its the motor im looking at.

Keep the advice/help coming guys .

Cheers.

 

I just noticed ur dyno numbers! lol these look good, i would be chuffed with around 440-450 RWHP! lol are you on the stock LS6 cam??

How much are the patriot heads, i see allot of you guys ranting over them? could the heads, cam, and pushrods be done for under $2500?

 

The cam Im running is an ENGLANDGREEN Performance "WHIPLASH CAM" Its in the 240ish/240ish 114+4 with 610 lift

The heads around $1200. USD You will need to contact ENGLANDGREEN (Stephen or his business partner Jason) for a cam price if you want their cam. You will for sure need a tune after that cam is installed!!!

The heads/cam and fast 90/90 make the package. I cant give you HP figures on other combinations.

 

Isnt a 240/240 cam a rather montrous one? lol i was thinking somwhere around 230's? lol ... surely ude need to flycut with a cam of this size?

I was thinking the G5X2 cam, patriots head(i assume these come built with rockers and springs?, then a variable chain and pushrods. this with my exhaust sytem and intake surely should delivery somewhere near you numbers?,... but then again, im not a tech guy. lol

 

Actually,,,,there are a LOT bigger cams out there. I did not fly cut and the heads DO NOT come with rockers or pushrods.

The cam is streetable cause it on a 114+4 LSA

Im running a stock LS2 timing chain on stock gears with a chain dampener. The LS2 chain is installed and beefier than the stock LS1/LS6 chain in hand:





Powerbond aftermarket harmonic dampener:






The hub is slotted to accept a crank snout side pin.

 

So even if you buy the heads, cam and pushrods, you still gotta get rockers and springs!? lol.. getting more expensive by the minute. lol

Might be a silly question, but why the after market ballancer?

Oh, and are they drill holes on the end of the crank bolt in the fitted timing chain picture????

Why did you fit the LS2 chain, and not go for the After market double chains? im assuming this chain is more affordable?

(sorry for the 101 questions... but this is al v helpfull)
Cheers

 

ls2 is strong and cheaper. many cars have made over 1000hp using it. You do a cam, do new springs and hardned pushrods.