z0qwik

iTrader: (2)

My car is a 01 z06, went to the dyno Friday and made 429.7/387.3.

Mods are
Thunder Racing RapTR cam(236/242 - .615/.615 - 111 lsa)
Milled TEA 220cc heads
LG Longtubes with O/R X
SLP loudmouth
Dual air intake

The tuner said the stock injectors are maxed out now but this all he could get out of it. I personally wanted 440+ but thats just me.

VincesSS

iTrader: (1)

Reasonable for you to expect 440+, but still a good amount of power. Go get some track numbers and compare. Could be a stingy dyno, never know.

My stock injectors are maxed out, too, but if the car is getting enough fuel to make max power it's irrelevant. Unless the car is running lean and detonating causing a loss of power of course.

30th t/a

iTrader: (51)

Id be disappointed. G5X3 cam only in a LS6 is 430rwhp all day long. Lts & bolt ons only. Stock heads & LS6 intake.

z0qwik

iTrader: (2)

Maybe goin to the track Friday and will see how it does but every dyno is different but i dont think it would be that different.

Thanks for adding to the insult lol jk its cool but yea i was disappointed to, makes me consider changing the cam now since i didnt when i pulled the heads(car came with this cam)

Ellsworth

so why haven't you bought new injectors if you're disappointed with the result?

30th t/a

iTrader: (51)

Are those the TFS "as cast" 220 heads? What did TEA do them?
Id be more concerned with the heads over the cam your using. Basically It looks to me that those heads arent much better than the stock LS6 heads.

Im suprised your injectors are maxed out. Mikey from Rapid Motorsports tuned my first H/C setup using stock injectors and I made 430/400 and then I installed better heads, G5X3 cam, & a 90/90 Fast and made 455/413 using the stock injectors. Never had an inssue. The car ran great.

z0qwik

iTrader: (2)

I didn't think the stock injectors would max out already but since I just found out they are I will buy new ones now.

They are the 220cc as cast and I don't remember what Kevin at Vengeance had the heads milled to off the top of my head. I heard they flow pretty good compared to the 215s and that they were close to the same #s. I too am surprised they are maxed out.

fueledpassion

I wouldn't be disappointed. At the end of the day, it's the seat of your pants power that makes you smile from ear to ear. Is it fun? Is the tune smooth?

I went for a ride in my buddies old fox body that was 500rwhp. It sucked. My old GTO @ 365hp could keep up easily. The car just didn't "pull" because the timing was not ideal.

But then again, I bet it's either one of two things:

1) You've got a bottleneck somewhere
2) The cam isn't well-matched with the heads

venom ws7

iTrader: (13)

Dynojet?
Very low numbers IMO you should make those numbers with the stock 243 heads maybe even more.

Any graph? Do you know the injectors duty cycle?

30th t/a

iTrader: (51)

I 100% agree.

Sales4@Texas-Speed

iTrader: (4)

For what its worth my 01 z06 dynoed 420rwhp with the tsunami cam only, 235/240 .649/.610, and with the addition of the PRC 220 as cast head the car picked up right at 30rwhp to make 450 at the tire. I think the cam size is ok, seems like something might be up with the heads.

ctd

iTrader: (1)

Strikes me a little odd that the injectors are maxed out @ that power level, should not be. So what defines max'd out with your dyno operator? If the injector's are the correct ones & you are near 100% duty then the power indicated might be low depending on the dyno type.

If your dyno guy has run a C6 Z06 ask what those numbers report just as a comparison.

When I run on the dyno I data log such things as the MAF g/sec, cannot change the amount of air going thru the MAF, Dynamic Cylinder air & Torque Delivered.These are sanity checks for me when trying to verify & compare dyno's. These are in addition to the normal things such as AFR, Timing, Temps etc.

Anyways the condensed version if your burning fuel your making power, no fuel no power, correct AFR of course.

corvetteandsilverado

iTrader: (3)

My 02Z made 420whrp with the same Tsunami cam no heads and no intake. Was hoping for more than 450 with a set of PRC LS6 stage 2.5s....

To the OP your numbers definitely seem low, when I did my cam job I up graded my injectors so that and your heads might be the issues

LSxPwrDZ

iTrader: (4)

LOL

OP, I would put some injectors in the car and go have it retuned. I've done quite a few setup's similar to yours and the stock injectors max out fairly easily with a decent size cam on a set of stock 243's. Usually baby cam's and ported heads will max injector's pretty quickly. My Formula for instance has the same injectors and fuel pressure and when it was cam and headers only my injectors were running 98% DC. So with that said I would def get some injectors and make sure fueling is good up top. I would almost bet the tuner limited RPM to keep from going lean.

redtan

iTrader: (5)

I'd be disappointed too...an LS1 with 241 heads and smaller cam put down just as much power:

https://ls1tech.com/forums/dynamomet...424-396-a.html

Now granted that could be a different dyno and the weather could vary, but still.

AaronR

iTrader: (8)

If the car made 440 with an ls6 intake you would be hearing "nice numbers "etc.You are basically 10 hp short of that.Don't get caught up in dyno numbers and internet expert opinions .

BAMALS1

iTrader: (16)

I wouldn't let the dyno dissapoint me. That's just numbers and they are very respectable. I would only be concerned if it wasn't over 400 lol.

thunderstruck507

iTrader: (18)

I am more surprised at the people saying the injectors should be fine...

I had 94% DC on stock 28# injectors with bolt ons and a 230/224 cam. Once I went to 243s and 230/238 cam I was getting over 100% DC by 4800rpm.

FASTFATBOY

iTrader: (23)

Why would you buy heads when you could have had the 243's CNC ported and made at least the same power??

For a cam that big, how does the torque look?

redtan

iTrader: (5)

What would you rather have? A $1100 pair of TFS220 ($1600 heads - $500 for selling 243s) or a set of ported 243s for the same price?