wavrdr

iTrader: (1)

Hey guys, I had my 02' ZO6 tuned by Mike Norris this past Friday and figured I would share the results.

Previously the car made 437whp/396wtq. Mods at that time were:
G5X3/114
LG LT's without cats
NLP 25% UD pulley
GHL catback
Spec STG.3/aluminum flywheel
160 thermo

Now the car makes 462whp/410wtq. Mods are as follows:
G5X3/114
TSP STG2.5 heads with 2.02/1.575 valves(no milling)
LG LT's without cats
NLP 25% UD pulley
GHL catback
Spec stg.3
160 thermo
Fast 90/LS2 tb
42lb injectors

Although the car isn't making a ton more peak power, it did pick up a solid 10wtq across the board and in some spots as much as 30wtq. Needless to say the car feels even stronger and I'm happy considering I'm at my stock compression ratio.

I do have a graph if I can scan it and send it to someone for hosting....

I would say that these heads are a great bang for the buck alternative to AFR's/ ETP's. Not saying either one of those heads is bad, just not all of us can afford them.....

Alan

Patrick G

iTrader: (14)

You and another board member did similar mods, but the results were different.
https://ls1tech.com/forums/dynamometer-results-comparisons/476045-afr-205s-azpwr-sound-lg-motorsports-483-416-a.html
Glad the car feels faster. Enjoy the newfound power! You're up there with the best of them.

Beast96Z

iTrader: (21)

Your car was making great power before, but 25 rwhp and 14 rwtq isn't all that spectacular considering you added heads/intake/and injectors. The 30 under the curve is nice, but I still would have expected more of a gain with those additions. The AFR's usaully show 50/50 and maybe a little more with the ETP's, heads only, much less the 90mm intake. None the less, if you never would have posted your before numbers, I'd say your numbers were great, but since you did, I'm focused on the gain. It either shows how well the LS-6 heads were working, or how bad your 2.5's aren't.

offaxis

iTrader: (19)

It looks like the other car has higher compression and his 90mm intake ported. Those changes could defintly close the gap.

offaxis

iTrader: (19)

Excellent numbers !!

Have fun with it

Jake the SSnake

iTrader: (11)

Nice, I don't think I've seen a h/c z06 byno less than 450rwhp lately!

wavrdr

iTrader: (1)

There is no doubt that the AFR's are stellar performers, but unfortunatly I was unable to afford those along with the other neccessary components.

I do think that milling the heads would have yielded another 10-15 whp, but I'm overall satisfied.

I to think that my previous setup was making great power...437 whp cam only on LS6 heads. Could it possibly have been the nasty carbon buildup on the pistons tops yeilding more compression?

I'm sure glad I went with a catch can setup!

Jason 98 TA

iTrader: (4)

Definately spend some time porting that Fast Intake & give her another few pulls. I think with a ported intake & some tune work you can be all over that 480rwhp for a lot less money.

Don't worry about PatrickG, he's got to be in every cylinder head post pushing AFR's.

Look for our new small runner cylinder head to be ready VERY soon. It flows a little better than the AFR, offers smaller chambers, and will be priced cheaper!

Ksett

Don't worry about PatrickG, he's got to be in every cylinder head post pushing AFR's.

LOL. I thought he may have actually worked part time for them manning the forums.

Beast96Z

iTrader: (21)

If you took the intake and injectors out of the equation, that may have been all he got from them.

Tony Mamo @ AFR

iTrader: (13)

Not unlike any other customer who is happy with the product they purchased. Pat gets involved in MANY threads (camshaft anyone?) and is just one of the sharper, more technically savvy guys on this board. He is a big asset here (on LS1 Tech) and not too many would argue that.

I also wanted to clear up the fact that the AFR head swap referenced above was just that....a head swap with the addtion of an underdrive pulley I would say was worth 5 of the 55 RWHP gained. And to be fair, some of those gains were probably attributed to the fact he had a FAST intake I had reworked and was not taking advantage of it as much with the LS6 lower flowing cylinder heads. BUT....Those gains were real, done on the very same dyno the very same day and were damn impressive with the lighter compression and a tank of 91 octane AZ gas.

Also, its good to see others follow where we have led (developing a small runner head), but lets not start making claims or comparisons that may or may not pan out. Results speak for themselves and I will simply leave it at that.

Are the AFR heads significantly more money? (Obviously yes)....Do they time and time again offer the end user solid gains for his money....yes again. To produce a cylinder head like the AFR simply takes more time and money. To examine one close up that becomes easy to understand and suddenly the money spent becomes a little easier to swallow.

There is a cylinder head vendor out there for every guys budget and taste....not to mention a market big enough to support practically all of them.
However know this....the single most important decision you will make regarding the ultimate power and TQ your engine will produce is choosing the best cylinder heads per your application. Every engine builder worth his salt knows that. You can slightly "miss" on practically every other component in the build, but with a killer set of heads put up some decent numbers. On the flip side, hit everything in a combination spot on but "miss" in your choice of cylinder heads and your power will be sub par. Give that some serious thought before dropping dime....or you will end up spending alot more money in the long run when you go back and do everything twice.

Some food for thought....

Tony M.

bad95killer

Nice #'s man & i wish your heads were milled for more ponies

Glad to heard that Jason & looking forward for that buddy

Very true Tony & In Fact spending significantly more money on a set of heads like AFR doesn't make me feel sorry at all & since we have diff. Hyd. Duration Camshafts on the market that grown rapidly make them more popular than any 15 deg. heads out of the box esp. on 346ci IMO & it has been proven on this community several times & still surprising most of us down here that AFR definitely raise the bar

paece

zipdog

A friend of mine picked up a set of your stage 2 CNC Darts, if they are any indication of the quality work of TSP, I doubt AFR or anyone else is worried. They looked like a 4 yr. old went at them.....

30th t/a

iTrader: (51)

AFRs are the only heads (that i see) that ALWAYS produce killer numbers. all the other brands will produce good numbers, then ill see dyno charts with very low numbers, even for the size of the cam and mods on the motor. ETPs are seem to always be making big power too...so far.

Billiumss

iTrader: (11)

Very true.

Numbers seem pretty good, enjoy the new power.

I'm going to be tuning a 2003 Z06 (soon) with AFR 205 milled, MTI G1 cam, LT, UD Pulley, LS6 Intake, Kooks or LG LTs with cats, EWP, MTI intake box. We are hoping to hit 440 RWHP, any more and it's just icing on the cake....

WS6FirebirdTA00

iTrader: (33)

good numbers but i would expect more from the heads, thats kinda weak IMO, before and after dyno for my car with a 230/232 with an unported 90/90 and slightly longer pushrods netted me 25 rwhp and from what i saw in logs as airflow increase i saw at least 15 of that from intake. i would expect the intake to help you more. i would think a small amount of that power is from the heads honestly. in the end i understand the budget but its really worth waiting longer and saving more.

a set of AFR heads would kick *** on that thing

WS6FirebirdTA00

iTrader: (33)

Thats nice but for the most part has been proven wrong in the past by individual flow test on some "other" heads

Everyone always says how they flow more than AFR head but dont have the bite to back up the bark

Fact of the mater is what makes power and what doesnt, consistently. Only reason I state this stuff is that is it more than personal opinion, its seeing real numbers in person.

Only issue with this is he has a lot more left in that cam with a better cyl head, which he could then see 500 easily IMO


BTW can you post a graph? Just put it in an attachment.

SouthFL.02.SS

500 is a bit optimistic.
The whole AFR issue is a touchy subejct IMO. They are always going to be the benchmark, and the AFR name will always be dragged into posts like this.
All I can say is enjoy the nowfound power. Going from LS6 heads to ported heads is completly different than going from 241 or 853 heads to ported heads.
IMO, I don't like the way ETP vs. AFR posts have been handled here in the past (has nothing to do with this thread), but one must pay respect to what AFR has done for our community in terms of establishing a higher benchmark. That said, high HP can be made using budget product.

WS6FirebirdTA00

iTrader: (33)

My main point is this:

I had similar gains just swapping to 90/90 from a ported TB/LS6 setup and went 0.050" longer on my push rods since the others I had did not give me enough preload, and I am on 10.2:1 CR. I am just questioning the capability of the heads, not to start anything but posts like this have come up time and time again with these heads not doing so hot. It is good information for the end user. Why spend that kind of money when you can save some more for something that performs better with much more room to grow. As stated before the numbers are great numbers, but before and after numbers dont show impressive gains esp if it is at that compression. Plus these heads, and correct me if I am wrong, net 10.75:1 compression ratio, right?

Also was your stock TB ported or no?

SouthFL.02.SS

^
I agree, as I saw great power gains on my setup on unmilled heads also (again, 241 to ported heads instead of 243s to ported heads).
My post was simply editorial in nature and for that I apologize. I've had a few Scotch's and I can't keep my trap shut.