Hello all,
We are proud to introduce our Stage I and Stage II LS1/LS6 Cylinder head's and cam packages!! The stage 2 LS6 heads and cam package is suprisingly affordable and there is no LS6 core charge either..This package with longtube headders and the usual bolt on's has been proven to produce over 450 Rear wheel Horsepower naturally aspirated!! Average testing is around 430 rear wheel hp and over 400 ft. lbs as well with great driveability.Here is a break down of the packages in order from stage I up to the stage 2 LS6 package.

Stage I 5.7 or 5.3 liter LS1 Head's and cam package:

Includes Stage I 5.7L or 5.3 LS1 Cylinder heads Fully ported with stock valves (flow 289cfm@.600" lift int ,212cfm@.600 exh), Custom-Grind Camshaft, Hardened Pushrods, Heads & Cam GM Bolt & Gasket Kit,custom computer tuning,all fluid's and full installation included.No core charge on any parts! $3,100.00 installed.

Stage II 5.7 or 5.3 liter LS1 Cylinder Heads and cam package:

Includes Stage II 5.7 or 5.3 LS1 Cylinder heads Fully ported with 2.02/1.57 stainless steel race valves and .650" lift springs (flow 297cfm@.600" lift int,220cfm@.600" exh),Custom-Grind Camshaft, Hardened Pushrods, Heads & Cam GM Bolt & Gasket Kit,custom computer tuning,all fluid's and full installation included.No core charge on any parts! $3,659.00 installed.

Stage II LS6 heads and cam package:

Includes Stage II Fully ported LS6 cylinder head's with 2.02/1.57 stainless steel race valves,.650" lift valve spring's and custom titanium retainers (flow 311cfm@.600" int,230cfm@.600" exh)Custom-Grind Camshaft, Hardened Pushrods, Heads & Cam GM Bolt & Gasket Kit,custom computer tuning,all fluid's and full installation included.No core charge on any parts! $4,100.00 installed.

All of these packages are installed in house at Modern American Sports Cars in Orlando,FL. If you wish to place a package order or for information on any questions you may have, Please feel free to e-mail or call us at lt1brutus@mascperformance.com or Z28vf@aol.com or 1-877-891-5550. Thank's,

Carter@MASC

 

assuming you are able to work on the car right away, how long does the install and tuning take?


and on a side note, what are the chances of the stock clutch with 50K miles on it being able to handle the stage I or II?

 

Teke, we'd have to order the parts, but the actual work would take about 3-4 days depending on how busy we are. If you needed the car for a race event we could do it in 2 days possibly.

Your clutch life depends on your right and left foot.......if you're doing clutch-drops or trying to launch perfect your clutch will be toast very soon.

We can get you a good deal on the package with a SPEC stage 3 or stage 3IPAD should you choose and that would add half a day to the install.

 

i don't race the car, not track within 3+ hours.

so it's mostly just spirited driving.

would love the clutch...but the $$ for the h/c is gonna be hard enough.

what kind of specs are on the cams? or is it "top secret"?

the reason i ask for time frame is cause i live in south florida, and would need to drive it up to ya, then pick it up when finished...probably one weekend to the next if possible.

 

since you install it all, is there any kind of warrantee against possible problems?

 

Are these 5.3L heads the same ones that come from the GM 5.3L truck engine?

If so, why do they flow better than the stock LS1 heads?

 

Teke:The camshaft is ground to your goals for the car,Then from there I will decide final specs.The main package though work's best together with the cams already chosen for the packages and the cams are nitrous and supercharger friendly by the way...There is a warranty on the package yes. There is a limited 6 month/6,000 mile warranty on part's, to Naturally aspirated car's only..Car's with blower's or N20 are expelled from the warranty.



sfb767: The 5.3's do not flow any better...they flow exactly the same...but the combustion chamber is smaller in the 5.3 liter head so the compression is raised by about 1/2 point for more power. Thank's,

Carter@Masc

 

Congrats on the new shop and I have a few questions for you guys as I have heard very little of you or the shop before and trying to get a little background.

Is everything done in house like the tuning and chassis dyno runs?

Do you use LS1 Edit or an outside tuner? What do you use to verify proper tuning?

Do you have an in house dyno and do you use a wideband air/fuel meter?

Do you have any dyno sheets for us to look at for these packages with A/F readings? How many cars have been done that I can see, hear or ride in that are naturally aspirated?

Do you have flow sheets for every head done?

What cam do you usually use with each these packages and will they pass emissions?

Do you offer more than a 6mo/6000 warranty as some of the other shops offer a 2yr/24000?

Do you use stock valve guides or change to bronze? I have heard and seen a set of stock guides worn terribly after 6000 miles with an aggressive cam.

Do you have any cars going to the dyno day at Norris Motorsports this saturday. Be a great opportunity to see you cars in person and see what they dyno at.

Sorry if it seems like a lot of questions, but I have dealt with another excellent shop here in town for a while and am always curious what a new shop is up to. I prefer a one stop shop with in-house tuning and dyno for obvious reasons, but you have to start somewhere and hope it works out for you. Look forward to the answers to these questions.

AJ

 

AJ,
Tuning is done by someone we have been working with for a while to get these packages in order.They are done by LS1 edit,but not by us personally right now.Every head is CNC ported, so the flow number's will be very close for every head.We do not have a dyno yet in the shop..but we have acess to a dyno right around the corner from us with a wide band.This package does not include dyno run's,but could be had for an extra charge.The reason we only have a 6 month/6,000 mile warranty as opposed to other shop's is..they can afford it because of how much their package cost's..They make so much profit off of people it makes me sick to my stomach to see people pay some prices being payed these day's.Our LS6 package is still over $500.00 cheaper than most people's LS1 packages..and that's what we are about..brining you high quality product's at an affordable price..Period.The cylinder head's are of the up most quality..fully CNC ported runner's hand finished valve bowl's,stainless steel undercut race valves,valve spring's good up to .650" lift with titanium retainers,Bronze valve guides,there is NO core charge on the cylinder head's so you could sell your stock ones and make some money back,..there has not ever been a 6-speed car to make under 400 rwhp with this ls6 package..as opposed to some shop's packages I have seen.The standard LS6 package will not pass emissions..but optional camshaft's are available and will be more emissions friendly.Basicly our mission with these packages are to put a stop to absolute INSANE prices on LS1/LS6 part's and make some insane power without breaking the bank in the process. Thank's,

Carter@Masc

 

Thanks for the quick reply. A couple more questions for you.

How much would a Stage 2 LS1 package be with A/F dyno runs and tuning on the dyno? If I have a package done I would like to be in the shop when it is being tuned on the dyno. Is this possible?

Who does the CNC work for you?

Are the heads sent to you complete, or do you do the final valve job, inspect, assembly and flow bench them there?

On the LS6 packages, are they actually LS6 castings on the LS6 package, or 6.0 truck castings like the Patriots?

Are using Patriot heads on all these packages now that I think of it after the last question?

Do you use dual springs or singles on each of the packages you mentioned?

I am guessing then if you did have in house tuning, and in house dyno and a 2yr/24000 warranty the price would be about the same as most others then. Overhead needs to be paid one way or another and dynos and tuning software is a necessary part of a modern performance shop these days and a big investment. I will check with the other shops to see what they would charge less dyno time and similar warranty in the mean time to have a good comparison.

I would still like to see some naturally aspirated dyno sheets with A/F readings as well as specs on the combo for sure. Any chance of being at the dyno day I mentioned also? Look forward to more answers and info from you.

AJ

 

AJ,
A complete installed stage II LS1 package would be $3,850.00 installed and tuned with edit on the dyno with air/fuel...which is still almost $1,000.00 cheaper than most installed stage II ls1 packages

The cylinder head's are from Patriot Performance.But they are not the cylinder head's that anyone else can buy,Each set that is shipped here is dissasembled and inspected,The head's are then treated to hand finishing by my self to optimize terry's port program even further without increasing port volume much at all.Everything about Patriot Peformance is good in my professional opinion..bronze guides,dual .650" springs,titanium retainers,stainless race valves,Five angle valve job,and Felpro viton valve seals.There was an issue where some people claimed that patriot was at fault for 3 out of 35,000 heads that dropped a valve seat...all of the seats that dropped where not the LS6 style heads anyways ..they where factory GM valve seat's..and there is tons of meat left on the seat's after the port work is finished anyway's...so I don't know what anyone's problem would ever be with patriot performance.They where not at fault.I am just finishing up a Darton sleeved 427ci LS1 Formula with my hand finished Patriot stage 3 LS6 head's and a reasonably small camshaft for the ci..I will post the graph and A/F run's when final tuning is done on it.

If we had our own dyno and tuning software the price would still stay under about $1,000.00 of competitors prices..the price only goes up a little over $200.00 for full edit/wide band dyno tuning, and I put about 8 solid hours of hand port work into each set that is installed for no extra cost.

I will post up some Dyno sheet's of our package soon, and I might not be able to make it out to Norris's for the dyno day, Although I might be out there to do some testing on a new GTO with our new MASC cold air intake and MASC ported throttle body
but I am not deffinate I can make it out there. Let me know if you have anymore questions.Thank's,

Carter@MASC

 

Thanks again for the replies, useful info for sure. The $3850 is pretty much in line without a longer warranty. The other local shop I deal with is $3995 with in-house dyno and tuning, but just a workmanship warranty and $4595 with the 2yr/24000 warranty. I won't mention the other shop as it is your thread and they are not a sponsor here.

As far as the Patriot heads, no problems with them at all as they seem to take care of most of the problems that have arisen. There has been quite a few issues, but as long as they back them as well as you. the seat issue can be a pain, but things happen. One of the bigger shops in Texas had a seat drop on one of their cars and went through the complete engine for free as part of their warranty. The extra money can be a good thing if spent well.

You mentioned posting up some dyno sheets soon. Does this mean you have some nauturally aspirated ones to see? If posting them is a problem, I can stop by the shop or the dyno facility to see them. No big deal on traveling a bit.

Look forward to possibly seeing you this saturday out at Norris's if possible. Bring those dyno sheets with you if you come out.

AJ

 

FWIW, I have been reading about the Patriots not making as much HP and TQ as other heads like TEA and CNC with the same cams on LS1 Tech. Kind of the you get what you pay for story. There is probably room for improvement I would imagine. Do you have any dyno comparisons of the standard Patriots you start with and then after you do your hand finishing? Flow bench numbers do not impress me as much as actual dyno and track data. Thanks again.

AJ

 

AJ,
The Patriots are very well engineered head's..I can't remeber the last time I saw a TEA or CNC car hit 470+ RWHP N/A on the stock bottom end..well it's never been done before that I know of that's why..but Patriot heads have powered a few past the 470 RWHP mark..there are many many Patriot head's and cam car's over 430+ RWHP. FWIW I like Brian @ TEA and Pete @ CNC does decent work too...but I am not impressed at all with either one...I am not trying to bash on another company..just trying to show some data...My car had TEA stage 2 5.3 heads,TSP 228R cam,longtubes ect.. and my car never put down over 376 to the wheels with a perfect tune...I tried many different camms and only very minimal gains where found...but my car still managed 11.50's N/A which isnt to bad...but the thing is..on STOCK heads and a GM hot cam I was going 11.60's N/A...my mph with the stock head's was 117 and mph with tea's was 115...wheather was very dsimilar as well...so off went the TEA's...CNC inc....well the formula WS6 I am building the 427 for had a package from..well I cannot really say out of fairness to that shop..but you know who I am speaking of...It included CNC stage 2 head's and custom cam, all the bolt on's ect..never ran faster than 12.30@113 and it's a 6-speed car...but the average that car ran was 111-112 mph and 12.70's-12.80's @111-112 mph....and that package was $7,995.00 !! I am not much of a fan of dyno number's...BUT they are a proven method of horsepower..just does not take into account the vehicles weight and how it will effect it down the track. I know you are Biased with your shop and I can understand that for sure...BTW..what does AJ stand for?

 

Thanks again for the reply. I am not trying to say anything bad about Patriots, just passing along info from LS1 Tech from a lot of different users for a comparison. There have been good experiences also. You have been very helpful with info but getting a bit defensive. I would think this info would be helpful to you in the long run also. I have seen where Patriots LS6 heads have made good numbers, but comparing lets say a Patriot/TR224 to a TEA/TR224 dyno, the TEA's usually make 15RWHP more. On your car, the ET's are very good and must be an A4 with a high stall. That would also explain the lower dyno numbers. I have seen where a set of CNC LS6 heads made 496RWHP in a Z06 with a big cam on a stock short block on two different dynos.

I may be a bit biased, but new shops can be a good thing. This is why I am asking these questions. I do not mind paying more for a good product, service and warranty. I also do not mind paying less when I get an equal product and am as satisfied with the complete transaction and service. Some folks shop price and HP hype over anything else. I try to get an educated look into things and facts such as dyno sheets, customers cars to see and a full service shop has a lot more to do with it personally.

As for the 12.3-113 car, what did it dyno at? What size cam? If it was 350-360 I can see the ET being about right. if it is a 400RWHP or better car I would say the driver is a bit off. I have seen 365RWHPcam only M6 cars run 11.9-11.8 when they probably shouldn't, but the driver makes the car. I can also pretty much guess the $7995 was quite a bit more then just heads & cam.

The name is actually Allen, but have been called AJ all my life and do not rarely answer to Allen unless my mom calls me. Don't hang out here too much and keep a low profile as I travel often on short notice, but who doesn't love these cars. Like I said before, it is great to see another shop come along, just want to get what I feel is the right info and facts to make the right decision for me.

For a little background on my personality with these cars, when I first went to the shop I have used and am "biased" to, but not blind to only use if there is a problem or something better, I was shown several dynos and of different heads and cam combos, cam only setups, as well as supercharged and turbocharged setups. Talked to a bunch of their customers, rode in and looked at a bunch of their cars before they touched anything of mine. I have also met and rode in several cars from out of the state they have done with my traveling I do. This is not something just any shop can do overnight. With time, proper products, equipment and service, MASC can be there too for sure. Gotta start somewhere. Thanks again for the info and good luck to you.

AJ