Exhaust opinions for 10 second car

jonathan · 01-06-2001, 06:46 PM

Hi, I just got the bbk 1 3/4" longtubes ordered, and im trying to decide what I should do after the headers.

My car will be running 300 shot of nos for now, and then swapped to a novi2000 blower making 16 - 18 psi in the fall.

I intend to have a full race exhaust, without tailpipes, Although i will drive it from time to time on the street, it will mostly be seeing trailer duty. I also want something that sounds badass and mean.

Ive been considering these options.

1)

3" pipe from the header, 3" race muffler, then 45 degree angle to a side exit pipe just before rear tire. No balancer (do I really need this with a short simple exhaust system with longtubes ?)

2) headers, then 3" mac powerchamber, then race muffler, then a dump pointing to the ground directly after the muffler

3) same as above but looping over the axle.

which of the above would offer the best performance ?

which would make it easiest to stick on a short simple 2" pipe with a cat and side exhaust with a cheap muffler to each side for pollution testing ?

What muffler would you recomend for the best flow ? best sound ? I want something louder than the 2 chamber flowmasters I have now, What is the absolute loudest highest flowing muffler available ? 1 chamber 3" flowmaster ? race magnums ?

thanks for the help

------------------
Jonathan Cole
Silver 89 Notchback
12.404 @ 109 with 60 shot
FRPP 3.73:1 Gears
B&M Ripper Shifter

pro88 · 01-06-2001, 09:57 PM

I sugggest 3 inch pipes, race mufflers and kick them out 45 degrees sidways under the car. Just remember less restrictions the better. Borla's sound real good.

93CobraR · 01-07-2001, 01:57 AM

I agree the side exhaust will look bad *** !

------------------
87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's, long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's.
Best time 13.012
Best MPH 104
Best 60' 1.816

Visit my site at:
http://www.geocities.com/cobrar93_2000/MyPage.html

NoSlow5.0 · 01-07-2001, 10:37 AM

Heres one more for side exhaust. Open long tubes would sound wicked bad the track

Light Em Up!!!

88PONY · 01-08-2001, 11:22 AM

I have MAC long tubes 2 1/2 pro chamber,2 1/2
Race magnums,and dumped right to the ground.
Sounds mean, like a big block

------------------
88 NOTCH DSS 331CI C-4 BRAKE 4:10'S 11.5-1 DART IRON HEADS X-CAM 1.7 ROCKERS 8PT. CAGE BEST 10.9@125MPH 100% STREETALBE TO ME!!!

88PONY · 01-08-2001, 11:36 AM

I have MAC long tubes 2 1/2 pro chamber,2 1/2
Race magnums,and dumped right to the ground.
Sounds mean, like a big block

------------------
88 NOTCH DSS 331CI C-4 BRAKE 4:10'S 11.5-1 DART IRON HEADS X-CAM 1.7 ROCKERS 8PT. CAGE BEST 10.9@125MPH 100% STREETALBE TO ME!!!

LX XLR8R · 01-08-2001, 11:55 AM

my buddy was running 10.2 with 14#'s with 1 3/4" long tubes and 2 1/2" back

------------------
1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..

01-06-2001, 06:46 PM	#1
jonathan Registered Member Join Date: Oct 2000 Location: Surrey, BC, Canada Posts: 36	Exhaust opinions for 10 second car Hi, I just got the bbk 1 3/4" longtubes ordered, and im trying to decide what I should do after the headers. My car will be running 300 shot of nos for now, and then swapped to a novi2000 blower making 16 - 18 psi in the fall. I intend to have a full race exhaust, without tailpipes, Although i will drive it from time to time on the street, it will mostly be seeing trailer duty. I also want something that sounds badass and mean. Ive been considering these options. 1) 3" pipe from the header, 3" race muffler, then 45 degree angle to a side exit pipe just before rear tire. No balancer (do I really need this with a short simple exhaust system with longtubes ?) 2) headers, then 3" mac powerchamber, then race muffler, then a dump pointing to the ground directly after the muffler 3) same as above but looping over the axle. which of the above would offer the best performance ? which would make it easiest to stick on a short simple 2" pipe with a cat and side exhaust with a cheap muffler to each side for pollution testing ? What muffler would you recomend for the best flow ? best sound ? I want something louder than the 2 chamber flowmasters I have now, What is the absolute loudest highest flowing muffler available ? 1 chamber 3" flowmaster ? race magnums ? thanks for the help ------------------ Jonathan Cole Silver 89 Notchback 12.404 @ 109 with 60 shot FRPP 3.73:1 Gears B&M Ripper Shifter

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01-06-2001, 09:57 PM	#2
pro88 Registered Member Join Date: Dec 2000 Location: roseburg, oregon Posts: 87	I sugggest 3 inch pipes, race mufflers and kick them out 45 degrees sidways under the car. Just remember less restrictions the better. Borla's sound real good.

01-07-2001, 01:57 AM	#3
93CobraR Registered Member Join Date: Oct 1999 Location: Cincinnati, Ohio Posts: 1,575	I agree the side exhaust will look bad *** ! ------------------ 87 GT, 4 inch cowl hood,17x9 Cobra R's/255/45's, long tubes headers,h-pipe,Flows,BBK cold air, Mass air,70mm MAF, 1.7's, 1" spacer,underdrive pulleys,Pro 5.0, King Cobra, Adj. fuel Reg., Lakewood Lift Bars,50/50's,subframes, 4.10's. Best time 13.012 Best MPH 104 Best 60' 1.816 Visit my site at: http://www.geocities.com/cobrar93_2000/MyPage.html

01-07-2001, 10:37 AM	#4
NoSlow5.0 YOU HAVE NO MARBLES!!!!!! Join Date: Aug 2000 Location: Jonesboro,Georgia,USA (Providence, Ri) Posts: 868	Heres one more for side exhaust. Open long tubes would sound wicked bad the track Light Em Up!!!

01-08-2001, 11:22 AM	#5
88PONY Registered Member Join Date: Nov 2000 Location: INDIO CA USA Posts: 141	I have MAC long tubes 2 1/2 pro chamber,2 1/2 Race magnums,and dumped right to the ground. Sounds mean, like a big block ------------------ 88 NOTCH DSS 331CI C-4 BRAKE 4:10'S 11.5-1 DART IRON HEADS X-CAM 1.7 ROCKERS 8PT. CAGE BEST 10.9@125MPH 100% STREETALBE TO ME!!!

01-08-2001, 11:36 AM	#6
88PONY Registered Member Join Date: Nov 2000 Location: INDIO CA USA Posts: 141	I have MAC long tubes 2 1/2 pro chamber,2 1/2 Race magnums,and dumped right to the ground. Sounds mean, like a big block ------------------ 88 NOTCH DSS 331CI C-4 BRAKE 4:10'S 11.5-1 DART IRON HEADS X-CAM 1.7 ROCKERS 8PT. CAGE BEST 10.9@125MPH 100% STREETALBE TO ME!!!

01-08-2001, 11:55 AM	#7
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	my buddy was running 10.2 with 14#'s with 1 3/4" long tubes and 2 1/2" back ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..