Sales@Tick

iTrader: (3)

IIRC Fear LS had .050-.060" intake valve clearance with his TEA Stage 2 heads, but I believe those castings have 2.04/1.57 diameter valves. He runs a .040" Cometic if memory serves me correctly and his heads may of been milled slightly.

You may end up having to fly-cut.

LS7jUnKiE

iTrader: (5)

Thanks Martin, I just dug up his thread from last year and read through it.

He had 63cc Chambers and 2.04/1.57 valves and ran a 0.040 gasket.

Mine have 62cc chambers and 2.02/1.57 valves.

Is it safe to say the difference in valve size will make up for the difference in milled surface loss?

Maybe running the 0.045 cometic would give me a little more cushion and not lose too much quench?

I am looking at around 11.2:1 SCR and 8.9 DCR correct?

Sales@Tick

iTrader: (3)

If your valves are made by the same manufacturer and have the same valve margin it could be assumed that the valve drop with your smaller chamber would be very similar to his with a 63cc chamber.

Since you will be measuring anyways to ensure proper clearance, I wouldn't sweat it too much. On paper things can look perfect, but in the car things can and do change due to tolerances.

I'd keep the .040" on it if you're committed to fly cutting if it's necessary.

poolsmillrods

Been really wanting to do a cam swap on my 02, 50,000 mile camaro. I've read many pages of this thread and I'm considering the sns stage 2 or 3 but really leaning towards the 3. Car has long tubes ory and custom cat back with a single inlet single outlet flowmaster.

LS7jUnKiE

iTrader: (5)

Martin I spoke with Fear LS....he used a 0.051 gasket and had .065 ptv clearance.

If I use the 0.051 MLS gasket I will end up with 11.06:1 SCR and 8.75:1 DCR. And I will avoid flycutting (hopefully).

If I use the 0.040 cometic gasket I will end up with 11.38:1 SCR and 9.00:1 DCR. However I would definitely have to cut pistons.

Are these differences in compression worth my time and money to flycut the pistons in your opinion?

Thanks

Sales@Tick

iTrader: (3)

How many miles per year do you drive this car? Do you have a goal with the car? Is it a 6 speed or an A4?
We've personally run cars down to .050" with our Polluter cams and have never seen a valve touch a piston. We highly recommend to all our customers to check spring pressures every 10k miles or one year whichever is first. Not all the springs, but a couple to be sure you're not losing valve stability.

I don't recommend everyone do this, but some do not want to fly-cut and still have a max effort combination with the biggest cam they can fit in it.

In terms of being "worth it", I have some customers who are willing to spend 1k dollars for 20hp. Some don't want to spend more than 350 dollars for 20hp. Being "worth it" is relative to the person who is forking out the dollars at the end of the day.

I'll tell you that the .040" gasket versus the .051" is worth about 8-12hp and almost just as much torque. If that is "worth it" to you, go for it.

poolsmillrods

Martin . My car is driven mabee 30 miles a month or so. It's a m6 and only goal is have a good sounding and performing street car. I have no plans on heading to the track. I want usable street power. I have a 68 c10 with a 02 ls1 that has a street sweeper ht from fti I I like the usable street power it has. The more I read I'm really thinking tha sns stage 2 would probably be a better choice but your the expert .

FEAR LS

iTrader: (8)

LS7jUnKiE- If you ran the .051" gasket, you're not going to have to fly-cut. You would have sufficient clearance.

Now if you're going to fly-cut and want to run the .040" gasket, I would have your local machine shop mill the heads a little more. Get the most bang for the buck! That's just my $0.02.

What type of fuel will you be running? Any power adder?

James

LS7jUnKiE

iTrader: (5)

Going to run 93 for sure. I think I will go ahead and use the 51 gasket. I am ok with missing out on a few ponies, the car won't see the track...purely street use.

I'd like to take the next year to build an iron block 427 to handle an F1X procharger but will be a costry build and will need a year to gather funds.

Sales@Tick

iTrader: (3)

Honestly, if it's only driven that much I'd go with the SNS Stage 3. There are many dyno graphs and track results out there from this cam, and it makes great torque.

It does lose a little torque(8-15) from idle to 2750-3000rpm depending on what headers, merge and exhaust you have. The SNS Stage 2 loses around (4-8) in that same RPM range. Again depending on merge, headers and exhaust

I'd also ditch the Flowmaster muffler for a Magnaflow or a Hooker Aerochamber. Proven HP gain.

KrisR

iTrader: (2)

OK...so it looks like my cam-only C5 plans are also going to include heads.

A guy at a local shop will be porting up a set of milled 241 heads for me. Sounds like the ending compression ratio will be in the 11.2:1 range so I'm guessing around a 60cc chamber, which also means about .040" milled off of them to get that CR. I'm waiting to hear exactly how much has been/will be milled off but I think I'm close.

Now...with the Street Heat Stage 2 camshaft that I have sitting here in a box, will I run into PTV issues with heads milled this much? I realize that I will need to run shorter pushrods also (7.300-7.350?). Again, I will not be doing the install. My tuner and the guy doing the heads is confident that we can see 430-440rwhp and 400+ft-lbs with the milled/ported 241s and your camshaft (if it will fit...), 1-7/8" longtubes and offroad X, LS6 manifold and TB, AFE CAI, ASP 25% underdrive pulley, 36lb injectors.

Thanks for any info on this.

Sales@Tick

iTrader: (3)

You will have to fly-cut the pistons with the heads milled that much. No way around it.

KrisR

iTrader: (2)

OK. Just talked to my tuner (works at the same shop as the head porter) and he's saying that he doubts the heads are/will be milled that much. He is going to get some solid data from the head-porter guy about the milling and get back to me. Thanks for the quick response.

Outlaw E36

iTrader: (23)

Martin will I have any ptv issues with the sns stage 3 and a .040 gasket?

KrisR

iTrader: (2)

Ok. The 241 heads I mentioned earlier will be milled a max of .020 with the valves sunk to increase ptv.

SlowBurn

iTrader: (7)

I'm a little late to the party but I just wanted to add this for anyone thinking of going with Tick Performance.


This is the second time I've dealt with Tick. The first time the let me get in on the group buy for the Tick Adjustable Master when I was a day late and STILL didn't charge me shipping... TO HAWAII!! WHOA. This time I was/am in the market for a head cam setup. Martin was very patient with me, explained everything for me, took the time to spec out a whole setup for me and so far I couldn't be happier. I realize there are a lot of great choices to go with in the LS world, and most of them are great, but so far their customer service with Martin in particular have been outstanding. Thanks for everything so far Martin, I'll be calling soon about those TF heads we talked about!

NemesisC5

Subscribed........

Sales@Tick

iTrader: (3)

It's going to get a little tight with a .040" gasket. I'd prefer to see you run a .051 and utilize the added compression from the smaller combustion chamber of the 243's.


What's the valve drop on intake and exhaust valve?
Thanks for the kind words! We appreciate your business and compliments!

KrisR

iTrader: (2)

My Street Heat Stage 2 results are here:
https://ls1tech.com/forums/dynamomet...-ls6-mani.html

JRracing

iTrader: (35)

Martin, can the sns stg 2 be ran in a stock 6.0 truck motor with same results? It will have the usual valve train upgrades but truck intake and heads.

I'm looking for a tire burning tq monster setup.