transverse/crossflow mufflers (Page 4/4)
2.5 MAY 24, 12:40 PM

quote
Originally posted by fierosound:


The Jones V4143T V-Power muffler I ordered arrived today.
It appears to be very well constructed. Pipe connections are 16ga.
It is supposed to be quieter than the Jones Deflector muffler (comparable to Flowmaster 40 or 44).

The "guts" of the V-power mufflers are all the same. I photo-edited this cutaway to show how it looks as a transverse.
No flat surfaces or sharp corners inside, so supposed to be deep tone without drone/resonance.
Yup - you can see light right through between the outlets.






Wow that's a different setup internally, I'm curious what it wounds like.
edfiero MAY 25, 08:36 AM
FWIW, I have a Spintech on my SD4 with no cat. I have no complaints on the sound. The engine is loud as heck, but not so much from the exhaust, its the solid lifters and straight cut gears that contribute as much as the muffler to the noise.
2.5 MAY 25, 09:45 AM

quote
Originally posted by edfiero:

FWIW, I have a Spintech on my SD4 with no cat. I have no complaints on the sound. The engine is loud as heck, but not so much from the exhaust, its the solid lifters and straight cut gears that contribute as much as the muffler to the noise.



Yeah with a getrag 5 speed I need loud exhaust
boostedbird MAY 26, 11:12 PM

quote
Originally posted by 2.5:


Yeah with a getrag 5 speed I need loud exhaust



I hear you brotherman.
Patrick MAY 26, 11:41 PM

quote
Originally posted by 2.5:

Yeah with a getrag 5 speed I need loud exhaust



Did you try Larryinkc's solution?
fierosound JUN 22, 04:42 PM

quote
Originally posted by fierosound:

The Jones V4143T V-Power muffler I ordered arrived today.
https://www.jegs.com/i/Jone.../523/V4143T/10002/-1

It appears to be very well constructed. Pipe connections are 16ga.
It is supposed to be quieter than the Jones Deflector muffler (comparable to Flowmaster 40 or 44).

The "guts" of the V-power mufflers are all the same. I photo-edited this cutaway to show how it looks as a transverse.
No flat surfaces or sharp corners inside, so supposed to be deep tone without drone/resonance.
Yup - you can see light right through between the outlets.






Someone posted a video on Facebook of my SD4 engine running at an event last summer.
https://www.facebook.com/10...eos/572035449065579/

The muffler is the Jones V4143T V-Power muffler above with catalytic convertor, resonator tips and factory style routing.
It is quieter than the Flowtech Afterburner that was on the car before.
(umbrella is because wind gusts kept knocking decklid closed)

[This message has been edited by fierosound (edited 06-23-2025).]

Dennis LaGrua JUN 22, 08:02 PM
Any muffler that you can look into the opening and see the other side will be loud. The Flotech afterburner 13" we tested was loud, The Jones Full Bore muffler is exactly that, essentially a straight pipe. Of all of the direct fit (13") mufflers that we tested for engine swaps the Spintech was the quietest but it's not "radio quiet": You can hear the engine exhaust while driving. I've seen engine swaps with the long Magnaflow muffler that are quieter but installation requires cutting the trunk floor out or leaving the exhaust extremely close to the ground.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

87GT3800SC5SPD JUN 22, 10:38 PM

quote
Originally posted by Dennis LaGrua:

Any muffler that you can look into the opening and see the other side will be loud. The Flotech afterburner 13" we tested was loud, The Jones Full Bore muffler is exactly that, essentially a straight pipe. Of all of the direct fit (13") mufflers that we tested for engine swaps the Spintech was the quietest but it's not "radio quiet": You can hear the engine exhaust while driving. I've seen engine swaps with the long Magnaflow muffler that are quieter but installation requires cutting the trunk floor out or leaving the exhaust extremely close to the ground.




I used a Flowmaster Camaro cross flow 3" inlet / dual 2 1/2" outlets. No trunk modification and flush with the bottom of th cradle. I like the sound with my 3800sc.

https://www.dropbox.com/scl...04s&st=0kz2wiol&dl=0

[This message has been edited by 87GT3800SC5SPD (edited 06-22-2025).]