Yea, these are my 1st set of heads. I want to see some pics and what not. I could always cancel the order and get something different I guess.

 

is it possible to get some close up pics of the darts? i'm just kinda curoius of what they look at other than that one pic on the site.

 

x2 .

 

Well folks you guys didnt like the 11/32 valves so we are already making a change, although the first forty are already 11/32 and the guys who have them have no issues with them and love the heads, h.p. numbers will soon be floating around. Anyways we decided are going to go right to the 5/16 valve stem diameter and the projected valve weight should be less than the 8mm valves. This should create no disturbance and will still allow you guys to use you springs if you dont like the PSI springs we offer. All you will need is the correct retainer if ours doesnt work. The new retainers for our 11/32 valve were awesome and super light so I am sure the 5/16 piece will also be killer. They are made out of titanium and again are really trick!!

For those that want things a certain way, like using there stock parts, sure thats great buy them without the valve job and have your guys do the work, not a problem, we are flexible!

The valve debate has gone on long enough but to compare a stock valve weighs in at 99 grams, the valves we have weighed that we received from our valve supplier that replaced the LS1 stockers weighed 106 and our regular 11/32 valves we use in our small block heads both ford and chevy weigh 110. With the new 5/16 stuff we should be less than 99grams.

I know you guys have alot of concerns about valve weights, and it has been discussed alot, because of the hydraulic rollers this is an issue. Just to shed some light small fords use the larger 11/32 stems and super heavy hydraulic roller lifters and have no problems up to about 7200 and then the lifters kill the engines. With Crane drop in lifters with linkbars 7800-8000 rpm hasnt been an issue with the 11/32 valves.

Marine big block chevys with super long valves that are extremely heavy run forever making over 1400+ horsepower again with hydraulic rollers and 11/32 valves. There is several Big Chevy engines we know of running hydraulic rollers turning upwards of 7800-8000 rpm with big heavy 11/32 valves with a length of 5.475 and a head diameter of 2.300.

That said we are changing the heads to 5/16 and we will continue to make sure we offer a part that we feel is the best "out fo the box" head available.

We will also jump into the CNC ported versions later this year or early next year! Right now though we feel we are going to fill a market where people dont want to spend alot of money to build a good street strip engine, our out of the box heads will give them an oppurtunity at a lower cost alternative that will flat out meet their expectations.

If you would like pictures feel free to email darttech@dartheads.com I am not sure what you want out of the pictures but we will gladly forward them to you.

Gentlemen just wait until you start hearing results of guys who use these things you are not going to believe it...

 

The very fact that you are here on this board, actively participating, and making real-time changes to the design of your product says a lot for you! I think its great that youre taking the LS1 community's feedback and implementing it into your product.

 

Do you think the 8MM retainers will work with the 5/16 valvestems? The difference in radius is about .00125", just over a thousandth of an inch. Maybe it could be done if we use true 5/16 locks?

 

My mind is made up,I'll just wait till the next batch of 5/16th are done and I'll be ordering them from my wholesaler (VSI)...


U DART guys rock

 

Wow I am impressed with the changes.

 

The 8mm locks on LS1's have a different grove, just use a 5/16 valve lock.



I'm impressed that Dart made this change. To me it makes sense to just run 5/16 valves from the start. The XE-R lobes that these guys like to run are really going to benefit from this.

Bret

 

Wow, I'm thoroughly impressed with Dart's decision to listen to the consumer's concerns and make changes based on what the people are asking for. And this coming from a company as big as Dart, not too big to listen to the little guy and make the customer happy. Very impressed. Seals the deal for me, Dart heads it is. And they are priced where I wont have to sell internal organs on the black market to afford their heads also. Can't beat that.

 

when are we gonna see some with different sized chambers, I know thats what is holding some of the truck guys back

 

John,

I remember from your email that the 5/16 valves are definitely more expensive than the 11/16 SBC valves. How is this going to affect price of the head?

 

SWEEEEEEEEEEEEEEEEEEEEEEETTT!!!!!!!!!

oh its on now!! all I need is a few dyno #'s Im sure the #'s will be there.. Im pretty much sold on these heads... cant wait for tax return this year

 

I had no intention of doing any mods but with the change to 5/16 valves for the same price my resistance has been whittled down to zero.

 

Now if you guys could just offer these with a 72cc chamber and a thicker deck for all of us in the FI/N2O world, you'd have all of the LSx market covered!

 

how about some upclose shots of the heads ports, bowl area

 

wow. now that is some customer service. especially since there have been no customers yet, lol.

 

impressed

 

Do ya'll have any idea of when your CNC ported versions may be coming into the market and a ball park figure on price?

Thanks!

Galen

 

Posted couple pages back.