SVT THIS

iTrader: (27)

I was up all night last night reading through the Dart 205 and 225 posts made in the last 6 months. I haven't really seen any flow numbers that impressed me, but when on a car with a good cam and supporting mods I've seen some real impressive power (440+hp).

Would you all say the Dart 205/225 heads are worth the $600 or so more dollars over TSP's LS6 head? And are the CNC Dart heads worth the extra money to get them CNCd? Wouldn't that change the runners?

Does anyone know if the PV clearance is stock on the Dart heads? I'd still like to run a larger cam with a set of 225s but don't know if that would be an issue.

vettenuts

iTrader: (4)

I would do the out of the box Darts. You can always modify them later but I think you will be pleasantly surprised. Dart seems to have spent a lot of time on setting up the ports and chambers, my logic was "why mess with it".

BOTTLE ROCKET

iTrader: (4)

I agree
I am very pleased with my 205s with a mild cam. They not only gave the car more higher peak #s, but a LOT more low end torque and as a result, drivability
You've heard it many times before, but a lot of people still concentrate on peak #s as a measure of performance. I have compared my own dyno graph to a lot of other posted graphs, and have been presently surprised at how well my "average hp" compares to the higher hp engines.

SVT THIS

iTrader: (27)

Yes I have read that the PRC LS6 heads are lacking quite a bit of torque. Any other opinions/testimonials?

ShevrolayZ28

iTrader: (4)

Isn't the Dart head made in it's own casting, and the LS6 a GM casting? I would think that there would be some strength differences in favor of the Dart.

Jake the SSnake

iTrader: (11)

If you want to run a bigger cam the ls6 heads will need bigger springs anyway.By the time you do that and the new valve job there doing to these heads you will be pretty close to the darts in price.

Kraest

iTrader: (3)

The Darts are a better bet, since they already come with bigger valves and springs that are good for .625 lift. I'm running a big cam in mine with no PtV issues.

Mike

madmaxz

iTrader: (7)

so go with the dart 205's or 225's on a 346? and cam like the ms3 or something custom ariound the same size.

Patrick G

iTrader: (14)

The Darts are a clean sheet design and have overcome most of the limitations of a factory casting. I would recommend buying the as-cast Darts and not the CNC'd versions. The as-cast Darts have put down consistent numbers on the dyno and are a solid value. When Dart comes up with their own CNC'd version, I might change my opinion though.

abranti2

Ok this could end up being a stupid question...but are the dart heads being sold by BYUN and TSP the same? There's a $600 difference between the two for the assembled version. Here's the sites:

http://www.texas-speed.com/shop/item...d=625&catid=40

http://byunspeed.com/product_info.ph...93c3aeb7c9b858

Thanks guys

bmfcamaro

iTrader: (1)

byun says head

tsp says heads

the stupid bs that people do to make things look cheaper

madmaxz

iTrader: (7)

are TSP's for $1400 assembled? and patrick will the cam we talked about(235/243 .646/.653 110LSA +1) work with the 225's that have a 2.05/1.60 valves? im sure ill have to flycut now...

abranti2

Yeah it ended up being a stupid question...I was really excited there for about 5 minutes.

Jason 98 TA

iTrader: (4)

We're all shocked that you don't like any other CNC cylinder heads besides AFR's. We would like to extend an invitation to you personally, Patrick, to join us on the engine dyno in the next few weeks. We will be dynoing the as-cast Darts, AFR 205's, and a set of our PRC 1.0 LS6 heads on a stock short-block. It would be nice to have a few more witnesses to see the cylinder head swap procedure, as well as all of the results, no matter what they are. It would be even better for you to be there since you're so fond of the AFR's, and continually have the need to down our products. Feel free to give us a call if you'd like to be there, and we'll let you know on the exact date and time.

It's a pretty simple comparison. Your always quick to down our cylinder heads like they won't make good hp... Here's your chance to get data to support your claim.

The PRC stage 1 LS6 heads flow great air flow for the $$ & make very nice power gains.

00T\A

Galen

iTrader: (3)

Jason, I would also like to see you stick a set of your Stage 2 Darts on there to see how much of an increase you have over the as cast Darts. If you need to borrow a pair, mine are not on the car yet...but may be in the next 24 hrs, so be quick to let me know!

Galen

Jason 98 TA

iTrader: (4)

Galen,

Currently we aren't offering anymore cnc ported Dart heads. Maybe at some point we will do them again, but currently we've stopped the CNC porting of Dart castings.

SVT THIS

iTrader: (27)

The LS6 heads are amazing for the price they have on them and have put down impressive numbers. They are the best head for the buck out there by far IMO. However, I think I would get more torque out of the Dart 225s. He wasn't bashing the TSP products at all-which are great (I'm actually going to get my cam and heads from you all)-he was just saying the Darts are a better head for a little more performance (which they should-they cost $600 more dollars!)

Lets not mention anything else about the AFR heads in this thread, they are in a league of their own and because of that they are way out of my price range. Let's please keep the head comparison to Dart and TSP LS6 heads only. I'd like this thread to stay open long enough to get a lot of opinions on this subject.

I'll most likely be running a 228R cam, a Patrick G torque cam, or an MS3. Still up in the air as I haven't seen many numbers with the torque cam, 228r or MS3 with the darts.
Anyone else have experience with either of these cams with these heads?
What about any of these cams with the PRC LS6 heads?

What kind of numbers are you all seeing with your setups?

Thanks!

Asmodeus

But if you're running LSK lobes, and getting near .640-.650 lifts, wouldn't you have to upgrade the springs on the Darts as well anyways? That's another 300-400 bucks right there.

WickedC5

iTrader: (3)

lets keep the input coming guys.