Dynatech step headers for dRagULa
Thread Starter
Joined: Nov 2001
Posts: 45,361
Likes: 1,792
From: Chicago, IL
Dynatech step headers for dRagULa dRagULa has an iron block ARE 422ci motor with all the expected supporting parts:
www.ls1tech.com/moderators/psj
We are considering a full exhaust redo.
dRagULa currently has TTS longtubes (stainless), a 3" custom ORP made by ARE, and a 4" Mufflex with a custom 4" Dynomax Ultra Flo welded muffler.
We are thinking of doing the Dynatech step headers doing into 3" oval duals, 3" bullet mufflers with turndowns.
We have a dyno session planned in the next two weeks, but may hold off and make these exhaust changes.
Thoughts?
www.ls1tech.com/moderators/psj
We are considering a full exhaust redo.
dRagULa currently has TTS longtubes (stainless), a 3" custom ORP made by ARE, and a 4" Mufflex with a custom 4" Dynomax Ultra Flo welded muffler.
We are thinking of doing the Dynatech step headers doing into 3" oval duals, 3" bullet mufflers with turndowns.
We have a dyno session planned in the next two weeks, but may hold off and make these exhaust changes.
Thoughts?
Re: Dynatech step headers for dRagULa [quote]Originally posted by Bob2of3:
<strong>If you do switch I want your Y-pipe for my TTS's <img src="gr_stretch.gif" border="0">
LAter <img src="gr_grin.gif" border="0"> </strong><hr></blockquote>
how did you sneak that post in before me. <img src="gr_images/icons/wink.gif" border="0">
<strong>If you do switch I want your Y-pipe for my TTS's <img src="gr_stretch.gif" border="0">
LAter <img src="gr_grin.gif" border="0"> </strong><hr></blockquote>
how did you sneak that post in before me. <img src="gr_images/icons/wink.gif" border="0">
Re: Dynatech step headers for dRagULa Guys make 600rwhp with your current exhaust, I don't think its a problem. Focus on the cars issues before you go making new ones. <img src="gr_images/icons/wink.gif" border="0">
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TECH Junkie
Joined: Nov 2001
Posts: 3,987
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From: Melbourne, FL
Re: Dynatech step headers for dRagULa I kind of have to agree with Terry here... John, get your shiftpoints straightened out and work through the other little bugs you have before changing the entire exhaust system... I doubt there's very much to gain by switching headers/exhaust on your car.
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TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Re: Dynatech step headers for dRagULa I think you should leave the exhaust alone as well. The only thing you will gain from switching the exhaust is a headache from the duals dumping under the car. I would get the manual valvebody in the tranny and a shiftlight <img src="gr_stretch.gif" border="0">
Chris
Chris
Re: Dynatech step headers for dRagULa I think you current exhaust should be just fine. Are you sure that block isn't made of lead instead of iron? <img src="gr_images/icons/wink.gif" border="0"> <img src="gr_grin.gif" border="0"> <img src="gr_images/icons/wink.gif" border="0">
Tony
Tony
Thread Starter
Joined: Nov 2001
Posts: 45,361
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From: Chicago, IL
Re: Dynatech step headers for dRagULa dRagULa, poor dRagULa, don't listen to the hataz.
We know that last year was a tough year. Two years ago you were #12 on the NA list, and it was good.
Last year was a tough year. You finally hooked up with ARE and went 11.3 right off the trailer with converter and tranny issues. Laster went 11.15 shifting at 6100.
BV Performance will have you shifting at 6600/6600 and use some highly accurate injector tables and make it all good.
PSJohnny already purchase the oval pipe, bullets and turndowns but will keep the rest of the exhaust. He just need to find some extra flanges. He wants to see if it will be loud or too loud. <img src="gr_stretch.gif" border="0">
We know that last year was a tough year. Two years ago you were #12 on the NA list, and it was good.
Last year was a tough year. You finally hooked up with ARE and went 11.3 right off the trailer with converter and tranny issues. Laster went 11.15 shifting at 6100.
BV Performance will have you shifting at 6600/6600 and use some highly accurate injector tables and make it all good.
PSJohnny already purchase the oval pipe, bullets and turndowns but will keep the rest of the exhaust. He just need to find some extra flanges. He wants to see if it will be loud or too loud. <img src="gr_stretch.gif" border="0">
Re: Dynatech step headers for dRagULa On a big motor 450RWHP+ I would say a larger exhaust will help.But for most guys making 400RWHP+ a 3in Y to a 3in intermediate to a cutout and to whatever muffler u want will be perfect.
I opted for the cheapest setup
3in Y,3in Interm.,Cutout,3in over the axle to a 3in SINGLE Dynomax Race Magnum w/3in tail pipe.
Sure its loud but it flows EXCELLENT and weighs nothing.Maybe down the road I look for a quiet round sigle muffler since I use a cutout most of the time.Anyone know of any quiet round mufflers that weigh 6lbs tops?
Good Luck John
JS
[ February 12, 2002: Message edited by: JS ]
[ February 12, 2002: Message edited by: JS ]</p>
I opted for the cheapest setup
3in Y,3in Interm.,Cutout,3in over the axle to a 3in SINGLE Dynomax Race Magnum w/3in tail pipe.
Sure its loud but it flows EXCELLENT and weighs nothing.Maybe down the road I look for a quiet round sigle muffler since I use a cutout most of the time.Anyone know of any quiet round mufflers that weigh 6lbs tops?
Good Luck John
JS
[ February 12, 2002: Message edited by: JS ]
[ February 12, 2002: Message edited by: JS ]</p>
Thread Starter
Joined: Nov 2001
Posts: 45,361
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From: Chicago, IL
Re: Dynatech step headers for dRagULa dRagULa did 435rwhp a while back running out of fuel.
dRagULa is looking for 475-485rwhp next time with dynotuning via LS1Edit.
If dRagULa runs 126 trap speeds at 3600 raceweight we will be happy. Best so far was 120.99mph at 3650 raceweight hitting the rev limiter on both shifts.
dRagULa is looking for 475-485rwhp next time with dynotuning via LS1Edit.
If dRagULa runs 126 trap speeds at 3600 raceweight we will be happy. Best so far was 120.99mph at 3650 raceweight hitting the rev limiter on both shifts.
TECH Apprentice
Joined: Nov 2001
Posts: 339
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From: Indianapolis, IN
Re: Dynatech step headers for dRagULa I would say the steps will gain very little if anything over a long tube header. over a mac they will but not much over a long tube on most of our applications
Thread Starter
Joined: Nov 2001
Posts: 45,361
Likes: 1,792
From: Chicago, IL
Re: Dynatech step headers for dRagULa dRagULa currently breathes thru some 1.75 primaries going into 3" collectors, so the feeling is that the gain would not be very big, but there would be gain.
We will install the dual exhaust before the dyno session and go from there.
We will install the dual exhaust before the dyno session and go from there.
TECH Fanatic
Joined: Nov 2001
Posts: 1,055
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From: Baton Rouge, LA
Re: Dynatech step headers for dRagULa I think that setup is going to be stupid loud. I wouldnt want to drive that thing to the track <img src="gr_stretch.gif" border="0">
Just spend the money on tuning and weight reduction.
A change of this sort is something you do when you are looking to see a gain from 10 rwhp that you will notice--not when the car still doesnt even have the shift points set correctly. You'd get to the track with 4 changes made to gain a tenth and a mph and not know what did what...and this is what I call frustration and inefficiency.
Just spend the money on tuning and weight reduction.
A change of this sort is something you do when you are looking to see a gain from 10 rwhp that you will notice--not when the car still doesnt even have the shift points set correctly. You'd get to the track with 4 changes made to gain a tenth and a mph and not know what did what...and this is what I call frustration and inefficiency.
Re: Dynatech step headers for dRagULa I'd be more worried about getting air INto the
motor.80mm throttle body, port matched holley
intake , K&N FIPK.Your headers should be fine.
Larry, Tom and I will be testing the FIPK against
a lid and a K&N.Along with HPP3 power tuning and
open vs. closed borla.I'll let you know the results
in a couple of weeks.
motor.80mm throttle body, port matched holley
intake , K&N FIPK.Your headers should be fine.
Larry, Tom and I will be testing the FIPK against
a lid and a K&N.Along with HPP3 power tuning and
open vs. closed borla.I'll let you know the results
in a couple of weeks.