September 15, 2019, 04:26:41 PM

Author Topic: Put flanges on cats or weld in?  (Read 647 times)

Offline Gunnytron

Put flanges on cats or weld in?
« on: January 05, 2018, 10:32:06 AM »
I got myself a pair of magnaflow cats which I intend to fit at some point.

My question us, do most people just weld them to the y-pipe or is it a better idea to put flanges on each end so you can swap then out if they need replacing?
http://www.norotors.com/index.php?topic=12880.0
FD, LS1 running 220 3.90 Trickflow heads, Comp Ultra-gold Arc 1.72 Rockers, 7.550 BTR Pushrods, BTR Stage II NA Cam 227/234 .614"/.576" 113+2, ARP Head Bolts, BTR Platinum Springs, Ported FAST 90, NW 90mm TB, FAST 60lb Injectors, Textralia Clutch/Flywheel, T56, Cobra 3.55 Diff, Holley HP EFI, Racelogic TC.

Offline MPbdy

Re: Put flanges on cats or weld in?
« Reply #1 on: January 05, 2018, 11:11:01 AM »
Weld them into the y pipe but put flanges on the y pipe at the headers and then behind the Y

Online Cobranut

Re: Put flanges on cats or weld in?
« Reply #2 on: January 05, 2018, 07:37:36 PM »
Here's my midpipe.  No cats, but you get the idea.
The V-Bands make it really easy to get it out of the way when working on the car.
1995 FD, 7.0 Liter stroked LS3, T56, 8.8, Samberg kit.

Offline atli126

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Re: Put flanges on cats or weld in?
« Reply #3 on: January 31, 2018, 02:54:48 PM »
yes i second vbands, very nice, we welded cats in on my car. Try SLP clearance ebay store i got bullet cats for 50 each years ago
-Bret
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