per dd2000..

 

to this ( Thanks SittingBull)

 

You went from small tube headers with MUFFLERS to large tube headers with OPEN EXHAUST. That is the main difference.

Tim

 

You might want to check what the DD2k manual says about header sizes. According to them, even 1 7/8" headers would be considered "small tubes".

 

 

...Ill be back...lol

 

not so big now....hey I'm new to dd2000...

 

First, why are you putting 2.02/1.60" valves on the Vortec heads? Studies have shown the stock valve sizes are fine, and they come from the factory with very good valve angles. Switching will only gain you couple CFM, hardly worth the extra cost.

Next, you're building what type of engine? It looks like a carb 327 from your DD2000 info. What are your plans for this engine? Racetrack or daily driver? 50-state legal or anything goes? We need as much info as possible.

 

well first of all...Im actually using 416 heads...I have the heads in hand...I will be doing the port work soon...here is another thread...https://www.thirdgen.org/techbb2/sho...hreadid=150604
check it out for some pics.
I didnt have the flow file for the 416's so I used what I thought would be the closest.
This will be mostly a drag car eventually....it will have manual steering. (already have the s-10 box) No heat...no emmisions here in NE/Ia..the motor swap has been done for about a year now....this winter I pulled the motor and tranny again...all the mods are in my sig..Im about ready to start putting her back together..Ive just been waiting for warmer weather...no heated garage!
I have the cheapo Summit brand 1 1/2 tubes....Ive maxed out my budget on the other stuff...and I was curious how much power I will miss out on.

 

I dont have a lot of faith in dd2000 . I just use it to see how much effect different components have...and it looks like exhaust really effects dd2000 estimate..Guess what Im asking is " how much loss in the smaller size primaries...compared to the 1 3/4 or 1 7/8. Im dont have to keep the car street legal...I have a 94 for the street fun LT1/T56.

 

Mark, Where you been hiding? Moderator status now huh....:hail: ...just kidding..

 

I got the latest news from Motion Software that DD2003 is out. :rockon:

I was going to upgrade after reading all the new features. They've really moved up in the world. You can enter specific cam profiles now.


Plus they have like 100 different head flow files that come with the program, BMEP that you can use to evaluate the use of nitrous-oxide, and a whole lotta other stuff.

As I said, I was going to upgrade but it's $89.95. $134.95 if you buy it outright.

Obviously they feel the upgrades they've made are worth it. I however beg to differ. I'll wait until a few magazines give the reviews first, but even those reviews are paid for.

http://www.motionsoftware.com/dyno2003prodpage.htm

 

That was already in DD2k.

 

Well there's a lot of stuff that the new one has that the old one did.

I'm just pointing out some things the others might find beneficial. Is that OK with you?

 

Just fine with me.

It kinda looks to me like they've kept the internals the same and just updated the GUI. :lala:

 

What you really mean is you will wait untill you can get it on kaaza right?..

 

DUDE!!!!!!

I just downloaded their "DEMO" :nono:

I would NOT recommend that anyone buy it. It's not a whole lot better than DD2000. It's got 'easier' to use "Quick Click" buttons, and prettier colors, but that's about it.

It's not worth my money for the heads flow numbers that you can find in a lot of places on the internet. And it's not THAT hard to enter cam specs manually.

About the only advantage is you can enter both the advertised duration numbers AND the .050" numbers, and it plots the curve for you, but IMHO, it's not worth 90 frickin dollars. That's the only USEFULL difference I saw, and I played with it for about 1/2 hr.

 

Oh yea...... I just glanced at it again and the other "advantage" ( ) is instead of "Dual plane, Single plane" etc. they got this now.

 

Here's a look at the "Cam Manager" that allows you to enter both the seat-to-seat specs and the .050" specs.

 

The additional manifold types are ok I suppose. You've always been able to enter cam specs at .050 or from the seat, but changing the ramp rate is new. Probably not worth a $90 upgrade though.

 

I know this is off topic but how do you copy the page and post it like that? lol

 

What ever you want to copy, have it on the screen and hit print screen on the keyboard.

Open Paint, paste and there ya go.

 

http://www.traction-software.co.uk/s...pro/index.html

Its free to download and it works great!!!! Try it..

Marks method Also works well..with XP anyways...the screengrab pro is very simple to use.

 

Will I notice "Much" Difference between 1 1/2 and 1 3/4 Primaries?

 

thanks guys..........and yes you will see gains from a 1 1/2 to 1 3/4 especially up top..........