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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

For future reference... What cats do you run?

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Old Mar 1, 2017 | 11:29 AM
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For future reference... What cats do you run?

I personally run a tabby cat and then a siamese cat but that's just me!

Kidding! I want to go true duals on my truck AT SOME POINT and am having trouble picking which cat to go with... Are the flow master universal cats going to be high flow compared to stock on my 302?
 
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Old Mar 1, 2017 | 11:50 AM
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Originally Posted by DieselCamper
I personally run a tabby cat and then a siamese cat but that's just me!

Kidding! I want to go true duals on my truck AT SOME POINT and am having trouble picking which cat to go with... Are the flow master universal cats going to be high flow compared to stock on my 302?
Any aftermarket converter is high-flow compared to the factory converters. I used a Magnaflow 59929 on my old 1992 F350 w/5.8L engine.

Personally I see no reason to run duals, why pay for two of everything for zero benefit other than a lighter wallet and bragging rights.
 
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Old Mar 1, 2017 | 11:55 AM
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I used a pair of the 3 inch 200 series on a Supercharged Jag a few years back and they were excellent. Flowed really well, so my guess is that they'd flow way better then the stock 302's cat.
 
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Old Mar 1, 2017 | 12:10 PM
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Originally Posted by rla2005
Any aftermarket converter is high-flow compared to the factory converters. I used a Magnaflow 59929 on my old 1992 F350 w/5.8L engine.

Personally I see no reason to run duals, why pay for two of everything for zero benefit other than a lighter wallet and bragging rights.
Personally, when I drive a V8, I like to hear it. That's why my 460 has 2.25 duals all the way back.

Its because I'm young and dumb.
 
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Old Mar 1, 2017 | 12:47 PM
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Doesn't take duals to hear a v8... I'm running long tubes into 2.5 tube, into a Y pipe with single 3" into the biggest flowmaster muffler i could find, turn down in front of rear axle. Quiet when cruising (you can talk or hear a radio) but it lights up under load. No cat for now, though I understand that's not the greatest thing for air quality.
 
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Old Mar 1, 2017 | 12:51 PM
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I got lucky. A buddy of mine replaced entire exhaust on a 2013 z06 vette. Gave me the factory stainless steel cats.
 
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Old Mar 1, 2017 | 12:57 PM
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Running punched out factory cat on mine. Still passes emissions sniffer test but this will be the last year its required.
 
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Old Mar 1, 2017 | 01:08 PM
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Originally Posted by GoinBoarding
Doesn't take duals to hear a v8... I'm running long tubes into 2.5 tube, into a Y pipe with single 3" into the biggest flowmaster muffler i could find, turn down in front of rear axle. Quiet when cruising (you can talk or hear a radio) but it lights up under load. No cat for now, though I understand that's not the greatest thing for air quality.
Hmmm...how do you think it would sound without a muffler if I did Y-Pipe into 3" turndown in front of the rear axle?

Would I only need to buy one cat then?
 
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