headers and y-pipe for a stock dual cat set-up????
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Car: 89 Formula 350 Firebird
Engine: L98 350 TPI
Transmission: stock auto
headers and y-pipe for a stock dual cat set-up????
My 89 formula 350 has the stock dual cat setup and I am trying to find headers and a y-pipe to install. I was looking on Summit and Jegs and all I could find was a package from Hedman with shorty headers and includes the y-pipe ... part #68491. They don't have a ceramic coated option, but Jet-Hot sells them sterling coated for about 530 bucks. Does anyone have any experience with this Hedman package?? I was really looking for long tube headers, but I just don't see an option with a y-pipe made to fit the dual cats. Anybody have any ideas??
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Re: headers and y-pipe for a stock dual cat set-up????
Did you read my sticky post "What's the best headers? What's the best exhaust?" at the top of this board?
Long tube headers are made to go straight back into either dual exhaust pipes, or into collectors for open exhaust on a race car. It would be extremely difficult to have enough space to route a y-pipe from long tube headers over to where the dual cats are.
Because the dual-cat option was only made from 89-92 and it was pretty rare, many header companies have stopped offering y-pipes for dual cats. The headers are the same. Your best bet would be to search this board for "dyno don headers" and send him a PM and ask about his set. He's one of the few people left making headers for our cars.
Long tube headers are made to go straight back into either dual exhaust pipes, or into collectors for open exhaust on a race car. It would be extremely difficult to have enough space to route a y-pipe from long tube headers over to where the dual cats are.
Because the dual-cat option was only made from 89-92 and it was pretty rare, many header companies have stopped offering y-pipes for dual cats. The headers are the same. Your best bet would be to search this board for "dyno don headers" and send him a PM and ask about his set. He's one of the few people left making headers for our cars.
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Re: headers and y-pipe for a stock dual cat set-up????
Also, it might be hard to get ahold of dyno don because I wanted to get headers and y pipe from him and never got PM'd back. He might have personal things going on right now and isn't able to PM back. If you get ahold of him, let him know I don't want headers, I NEED them!
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Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
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Re: headers and y-pipe for a stock dual cat set-up????
Sorry if I missed any PM's but I am out of stock on headers right now.
The tubes are being bent but are not ready yet.
He said this week, we'll see.
Sucks having to rely on someone else.
The tubes are being bent but are not ready yet.
He said this week, we'll see.
Sucks having to rely on someone else.
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Car: 82 Berlinetta/57 Bel Air
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No personal experience, but they seem to be one of the best off-the-shelf shorty choices out there.
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Car: 89 Formula 350 Firebird
Engine: L98 350 TPI
Transmission: stock auto
Re: headers and y-pipe for a stock dual cat set-up????
Thanks for the info on long-tube headers ... I guess shorty's are what I will be needing. I will probably go with the Hedman package. I have heard good things about the brand. I am a little disappointed that the collectors are only 2.5" ... I was thinking 3" would be better. The Flowmaster Force II cat-back kit (part #17150) that is made for my dual cats, I know has 3" piping. But maybe the 2.5" will help out my ground clearance.
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Don't do 2.5" cat-back (haven't seen a dual-cat system with 2.5" pipe, personally). A single 3" fits up snug without hanging down to hit things.
2.5" collectors are fine.
2.5" collectors are fine.
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#8
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Car: 89 Formula 350 Firebird
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Re: headers and y-pipe for a stock dual cat set-up????
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Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: headers and y-pipe for a stock dual cat set-up????
Here is my setup for dual cats:
I don't supply anything past the pipes but,
Here is what it should look like when done right:
I don't supply anything past the pipes but,
Here is what it should look like when done right:
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Car: 09 GSXR/88 iroc/91 RS B4C
Engine: 600cc/l5.7/5.7
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Re: headers and y-pipe for a stock dual cat set-up????
dyno don can you pm me a price on that y pipe set up i already have the headers, and need a y pipe on my 91 plus i also need the collector donut gasket do you have those as well thanks
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Car: 1986 Trans-Am
Engine: chevy 350
Transmission: TH350
Re: headers and y-pipe for a stock dual cat set-up????
do you make the header pipes for the shorty headers.I don't what to use a Y-pipe.I wanna use a single pipe on each side.Do you make these pipes.Thanks
#12
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Car: '90 Trans Am-12.45@110.71
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Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: headers and y-pipe for a stock dual cat set-up????
I only make them for my headers, they don't fit anything else.
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