Cat delete
#1
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Location: Jackson, New Jersey
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Car: 1989 Trans Am GTA
Engine: 5.7L 350 TPI (Deleted Cats)
Transmission: 700r4
Axle/Gears: Original 3.27
Cat delete
Going to get my cats taken out this coming weekend. Just curious as to if i should remove the pipes going into the cats from the smog pump taken out (If they will cause a problem without the cats being there) or to just have them welded into the bypass pipe, being that it wont be an issue effecting the way the engine runs. I know i can just pull the smog pump out and reroute the belt but i would like to know if just welding it back into the bypass pipe wouldn't cause an issue.
#2
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Cat delete
With a 89, I'm assuming its a factory n10 car? If so and it has the factory cats, remove (and save) the cats so they could be replaced easily down the road.
#3
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Car: 1989 Trans Am GTA
Engine: 5.7L 350 TPI (Deleted Cats)
Transmission: 700r4
Axle/Gears: Original 3.27
Re: Cat delete
Okay, but could I keep the smog pump and the pipes running to the existing cats and weld them into the bypass pipe?
#4
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Car: 1989 Trans Am GTA
Engine: 5.7L 350 TPI (Deleted Cats)
Transmission: 700r4
Axle/Gears: Original 3.27
Re: Cat delete
The ones with the rubber hoses being the ones i am asking if they could be welded into the bypass pipe
#5
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Cat delete
If that is your exhaust, those aren't the original cats but yes, you can plumb the a.i.r. tubes into the exhaust but it may backfire once in awhile.
#6
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Car: 87 firebird 86 c10 90 mustang
Engine: 383 sbc
Transmission: 97 t56
Axle/Gears: Moser 12 bolt 3.73
Re: Cat delete
If the cats are never going back on I'd get all the air parts off. It's just there to add oxygen to the cats. Much harder to put back on than take off though.
#7
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Car: 1989 Trans Am GTA
Engine: 5.7L 350 TPI (Deleted Cats)
Transmission: 700r4
Axle/Gears: Original 3.27
Re: Cat delete
Not my exhaust, just a picture i found searching through the forums. Figured it would help see what i was talking about.
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#8
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Car: 1989 Trans Am GTA
Engine: 5.7L 350 TPI (Deleted Cats)
Transmission: 700r4
Axle/Gears: Original 3.27