Had the headers installed this past week and then drove it over to a custom exhaust fabrication shop for the custom 3.5" spintech oval Y-Pipe to be made for it. Driving the car with open headers was a blast. I was sitting at stop lights and setting off car alarms in near by parking lots...LOL!!!! <img src="images/icons/grin.gif" border="0"> A few highway underpasses I would kick it in at WOT and it sounded like a Big Block Pro Stock car going down the track... totally awesome!!!!

Can't wait to get the new y-pipe on the car and back to the track to see if I can get the car in the 11 teens or high 10s on the motor. Wish me luck!!!

Scott
1999 30th Anniversary Trans Am
Morgan Motorsports Aggressor 600 Package
Stage IIx Heads, 229 Cam, LS6 Intake
TH400 w/ATI transbrake and Cheetah shifter
Yank 9" Pro Thruster 4200 Converter
Strange 12-Bolt w/3.73 gears
TNT F2 250 Wet Nitrous System (not wired up yet)

 

Sounds awesome, really!!!! That looks like some serious *** setup you got there!!! Good luck! Where did you buy those headers?

 

[quote]Originally posted by Big Mike:
<strong>Sounds awesome, really!!!! That looks like some serious *** setup you got there!!! Good luck! Where did you buy those headers?</strong><hr></blockquote>

I bought the headers directly from Dynatech. The guy who I spoke with there "Scott" was very nice and had me a set of headers in less then a week. Excellent customer service.

Scott
1999 30th Anniversary Trans Am
Morgan Motorsports Aggressor 600 Package
Stage IIx Heads, 229 Cam, LS6 Intake
TH400 w/ATI transbrake and Cheetah shifter
Yank 9" Pro Thruster 4200 Converter
Strange 12-Bolt w/3.73 gears
TNT F2 250 Wet Nitrous System (not wired up yet)

 

How is the clearance near the steering linkage? Is the fit and finish vary good. Any problems that you could share with us. The headers don't have egr or air ports right? Do you have 3 bolt collector ends for easy removal. From the picture I saw looks like strait pipe. How much did you pay and how long did it take to get to you. What size primary tube did you go with. Let us see the dyno sheet when you get around to dyno.

Thanks Darren

 

How much were they? Where did you get 'em?

Marty

 

Holy crap Darren...how many questions was that? <img src="images/icons/shocked.gif" border="0"> <img src="images/icons/grin.gif" border="0">

 

[quote]Originally posted by Darren:
<strong>How is the clearance near the steering linkage? Is the fit and finish vary good. Any problems that you could share with us. The headers don't have egr or air ports right? Do you have 3 bolt collector ends for easy removal. From the picture I saw looks like strait pipe. How much did you pay and how long did it take to get to you. What size primary tube did you go with. Let us see the dyno sheet when you get around to dyno.

Thanks Darren</strong><hr></blockquote>

Damn Darren...LOL!!!! <img src="images/icons/grin.gif" border="0">

Okay, as for any problems... there are zero problems with the headers.

There are no clearance issues, all you do is drop the front K-Frame a little to give ya some clearnace on both sides to fit the headers up in there... that was about it.

The fit and finish is excellent... they are silver ceramic coated exactly like the FLP headers (since they are the ones who make the headers for FLP) and they fit perfectly.

They have slip on/bolt on collectors where you would need to have a custom Y-Pipe made for it. That's what I'm doing. The collectors are being tig welded on where they slip rather then just having them bolted on. Also, I am having 3 bolt flanges installed at the headers, where the Y-Pipe connects to the cat-back and another one where the cat-back goes over the axle so I can unbolt everything in 15 minutes and run open headers at the track.

The Primaries are the "step type" as I think they go from 1.87" to 1.75". Pretty sure that's what it is, but the collector primary tubes where it slips on is 1.87" and the collector end is 3.5". I'm using spintech oval 3.5" exhaust tubing on the driver's side for clearnance and 3.5" round piping on the passenger side w/transitions where needed. The entire Y-Pipe will be tig welded and coated (HTC). I will take some pics when it's all done.

The cost of the long tube headers was $429.00 and the collectors cost $99.00 a piece. You get all the hardware you need (gaskets, bolts, O2 extensions for the headers, etc...) and it took less then a week to get the headers to my door. They have a fresh batch of headers coming out in the first or second week of December according to Scott, but I would call and talk directly to him.

Hope that answered all your questions...LOL <img src="images/icons/grin.gif" border="0">

Scott
1999 30th Anniversary Trans Am
Morgan Motorsports Aggressor 600 Package
Stage IIx Heads, 229 Cam, LS6 Intake
TH400 w/ATI transbrake and Cheetah shifter
Yank 9" Pro Thruster 4200 Converter
Strange 12-Bolt w/3.73 gears
TNT F2 250 Wet Nitrous System (not wired up yet)

 

I'll chime in here since I use these headers also... You can purchase them directly from Dynatech @ Dynatech Headers.

 

<img src="images/icons/grin.gif" border="0"> Thanks for answering all my questions. Sorry for so many. I have a few guys down here that are wanting them. I could not give them any info till now. Thanks.

 

... Could it be? Or am I day dreaming? Its possible to get the power of FLPs and Grotts for half the price? <img src="images/icons/shocked.gif" border="0">

Please, i'd love some more pics/info when you get some time!

 

Do these headers have AIR tube fittings?

 

No AIR or EGR.

 

These headers are strictly race only headers... no air tube and egr provisions, you have to have a custom Y-Pipe made for it. However, it's the best way to go in my opinion. I'll take some pics when everything is done. I was told it will be completed by this Thursday. <img src="images/icons/grin.gif" border="0">

 

what the hell is the merge collector? the pics dont portray its use anyway?

 

BTW do they have true 1-7/8 headers all the way, no stepped crap, whats the point of stepped, i dont get it. id be willing to get a tubular k-frame to get true 1-7/8 headers hehe.

 

Merge collectors are like $300 each (or maybe thats a pair). Winston Cup cars, and a lot of the hardcore NHRA and IHRA guys use them. I dont know how much extra power they're worth, in some applications maybe 4 or 5 hp, in others maybe 20. They're kinda funky lookin too. They're really pretty hardcore and need to be tuned to each individual cam/rpm range to get the most out of them.



Step headers, from my basic knowledge, help keep the velocity up, as well as keeping reversion of exhaust down.

J.

 

IMO and talking to at least 3 people about the stepped design.Its superior to a regular 1 3/4in primary.But thats on a AGGRESSIVE setup.It will make more HP/TQ over a broader rpm range.

I opted for 3in collector after Dynatech,Cartek,
Billingsley all told me a 3.5in collector is TOO BIG for a 346CI.They reccommended a 3in Y pipe,Or a set of DUELS 2.5in to Duel 3in round race magnums and then to dumps but that way to loud for me.

So Mufflex is making me a 3in oval Y w/quick release.I wanna be able to drop the exhaust and run open collectors from time to time.

The Y will go to a 3.5in intermed. pipe and then to a 3.5in cutout,merge down to 3in again and I(1) 3in single round race magnum and (1) 3in tail pipe..

This will be light and flow very well closed.
Then I'll have the cutout or no exhaust option too..

Scott is correct.Dynatechs r beautiful!!!
I would get them if u dont mind making a Y.
I paid 649+S/H for the stepped design w/Collectors
from Billingsley Racing..

JS

 

One of our sponsors Billingsley Racing carries them...

 

i ABSOLUTELY LOVED mine! the fit and finish was amazing and the customer service was great! i also loved the sound of open headers but the vibrations were another issue! everyone loved the sound of open headers and the hotcam. people thought i wedged a bigblock in there. i think i am going to go with a quick drop system in my intermediate pipe. we will see!

 

I like them too! Emissions are not an issue in Hawaii, and many of the guys out here want them after seeing mine.



[ January 09, 2002: Message edited by: Reckless ]</p>