I have a '87 GT 2.8V6.........replaced the catalytic converter with a glass pack muffler (cherry bomb) and have Spintech muffler installed. After trying many other combinations, I find this setup gives the best sound. Not raspy at all.
I have a '87 GT 2.8V6.........replaced the catalytic converter with a glass pack muffler (cherry bomb) and have Spintech muffler installed. After trying many other combinations, I find this setup gives the best sound. Not raspy at all.
My muffler guy suggested mounting the muffler where the cat is (that is totally shot) I am looking at the Spintech 6000XLP because of the dimensions it comes in. Do you know which Spintech you bought and did you try it without the glass pack? I had bought a Flowtech After Burner but it will not fit where my muffler should and it is too wide to go where the cat is. I just want a decent sound outside without a ton of internal noise?
After trying several different mufflers I settled on the Spintech design. Its non-restrictive and gives a nice deep tone. If you contact them and provide dimensions, they will make one for an exact fit. Many of their designs are build to order. I have them on my 3800SC and 4.9L cars. We tried the Afterburner design and found it to be very loud. The Flowmasters were big ( and loud) that they didn't fit well. That's my take on it.
------------------ " 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 "
I love the tone of the Flowmaster behind my 4.9, and mine fits like a glove. A deep, low, muscular rumble (NOT raspy) that turns heads, but at cruising speed it's wonderfully quiet in the cab...best of both worlds. Mine has 2.5" into the muffler and dual 2.25" out.
After trying several different mufflers I settled on the Spintech design. Its non-restrictive and gives a nice deep tone. If you contact them and provide dimensions, they will make one for an exact fit. Many of their designs are build to order. I have them on my 3800SC and 4.9L cars. We tried the Afterburner design and found it to be very loud. The Flowmasters were big ( and loud) that they didn't fit well. That's my take on it.
Thank you. I will give them a call so I get exactly what I need. I was on their website and almost ordered one until I noticed that it wasn't right. I wasn't sure what option to pick so I could get an inlet and outlet on the same side and the second outlet on the top..... God knows I don't want the wrong one again! And since this will fit where the stock muffler is, I can junk the old cat and still put on a new one if I want.
I don't know how guys can like the Flowmaster. There's one on my 4.5 and it's not as annoying as some cars I've heard but man it's pretty unimaginative to my ears.
After trying several different mufflers I settled on the Spintech design. Its non-restrictive and gives a nice deep tone. If you contact them and provide dimensions, they will make one for an exact fit. Many of their designs are build to order. I have them on my 3800SC and 4.9L cars. We tried the Afterburner design and found it to be very loud. The Flowmasters were big ( and loud) that they didn't fit well. That's my take on it.
I ordered a spintech last year and couldnt wait to put it up but sadly the way my 3800SC is positioned the muffler doesnt fit
I purchased a Spintech muffler because I loved the sound on the YouTube video below. Stock vs aftermarket comparisons...watch until the end. I haven't installed it yet. I'm actually enjoying the stock sound, which is louder than I thought it would be. I just purchased my Fiero this summer.
Originally posted by Quad GT: I ordered a spintech last year and couldnt wait to put it up but sadly the way my 3800SC is positioned the muffler doesnt fit
Id have to notch the side a bit for it to fit
The driver side lower corner of the Spintech can provide some interference. Some guys notch that area but I just hammered that area a bit with a hammer using an auto body dolly to shape it for clearance. It didn't take that much to shape the area for clearance. The plus is that with my system I got to keep the full trunk and retained the heat shield
------------------ " 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 "
[This message has been edited by Dennis LaGrua (edited 09-11-2020).]
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