LT1 swap, cant use stock headers?
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Joined: Sep 2002
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From: California
Car: 1989 RS Camaro
Engine: LT1
Transmission: T56
LT1 swap, cant use stock headers?
I am swapping a 95 LT1 from a 9C1 caprice cop car and i have heard that i cannot use the stock headers on the engine, is this true and if so which headers are all u others with the LT1 using? any help is greatly appreciated, thanks
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Joined: May 2004
Posts: 2,924
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From: Kingston, Tn
Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
I'm running Hedman 68479 painted headers and their y-pipe. They are made specifically for the angle plug heads, have d-ports but do not have any provisions for the O2 sensors. You will have to buy bungs and have them welded in.
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From: New Berlin Wi
Car: 88 Iroc
Engine: 94 lt1 modded
Transmission: t 56
I'm running slp 1 3/4" headers that I opened up to match my ported heads. I think that these probably fit better then most if you are willing to do a little work to make them match perfectly.
Jmo
Kory
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Kory
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Joined: May 2005
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From: Ringgold, Ga/ Nashville, TN
Car: 1989 Chevrolet Camaro
Engine: LT1
Transmission: 700R4
Axle/Gears: 2000 rear, 3.73, auburn locker
I am running the same headers as Klortho but mine are ceramic coated. I had a custom Y-pipe made and put the O2 sensors in the Y-pipe. The only problem I had with the headers is that the back tube on the passenger side just barely touched the plastic heater box and melted it just a little. It wasn't enough to mess anything up. It was just enough to smell it melting the first day or so.
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Joined: May 2004
Posts: 2,924
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From: Kingston, Tn
Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
Originally Posted by LT1powered89
I am running the same headers as Klortho but mine are ceramic coated. I had a custom Y-pipe made and put the O2 sensors in the Y-pipe. The only problem I had with the headers is that the back tube on the passenger side just barely touched the plastic heater box and melted it just a little. It wasn't enough to mess anything up. It was just enough to smell it melting the first day or so.
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Joined: Jul 2005
Posts: 32
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From: Newark, DE
Car: '89 Camaro RS
Engine: 1994 F-car LT1
Transmission: T5 World Class
Axle/Gears: Jag XJ6 IRS, 3.42, Auburn Pro posi
I'm running FlowTech 11116 headers (the ones set up for angle plug heads). Not a lot of fun to install, but that was mostly because of the weird EGR fitting I welded on, combined with having the engine mounts backwards. 
As far as I know, anything that'll fit on a 1st gen small block (i.e. 305 or 350's used in our cars) with angle plug heads will also fit on the LT1.
As far as I know, anything that'll fit on a 1st gen small block (i.e. 305 or 350's used in our cars) with angle plug heads will also fit on the LT1.
Joined: Oct 2007
Posts: 1,375
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From: Wyoming
Car: 1995 Formula
Engine: LT1 350
Transmission: Built 4L60e
Axle/Gears: 10 bolt, Eaton posi, 3.73's
Re: LT1 swap, cant use stock headers?
I have the 68470s on my engine right now...no D ports and not sure about the angle plug business.
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From: Williamstown, NJ
Car: '98 Mustang GT
Engine: '03 4.6L
Transmission: T45
Axle/Gears: DK
Re: LT1 swap, cant use stock headers?
Joined: Mar 2000
Posts: 5,703
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From: Orange, CA
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: LT1 swap, cant use stock headers?
My headers & Y-pipe will fit as long as you don't need AIR tubes.
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From: Williamstown, NJ
Car: '98 Mustang GT
Engine: '03 4.6L
Transmission: T45
Axle/Gears: DK
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