Headers for my 81'
Thread Starter
Advanced
Joined: Oct 2007
Posts: 86
Likes: 2
From: Covington, La
Headers for my 81'
All,
I've decided to go with dual exhaust on my 81'. I'v already lined up a shop to run all new 2.5" exhaust system. The only thing I need to do is remove the old system and install the new headers, that why I'm looking for headers that will fit without modifications, if that's possible.
What headers would be the best to purchase and easiest to install? I'm trying to keep my budget down, I don't need $1000 headers, just looking for decent quality and performance. Need ya'll advice.
Thanks
Houston, Tx
I've decided to go with dual exhaust on my 81'. I'v already lined up a shop to run all new 2.5" exhaust system. The only thing I need to do is remove the old system and install the new headers, that why I'm looking for headers that will fit without modifications, if that's possible.
What headers would be the best to purchase and easiest to install? I'm trying to keep my budget down, I don't need $1000 headers, just looking for decent quality and performance. Need ya'll advice.
Thanks
Houston, Tx
Drifting
Joined: Oct 2004
Posts: 1,496
Likes: 1
From: Lafayette Louisiana
My ceramic dynomax fit well and only run around $300. However, I can't comment on how to install them with the engine in the car. I had the engine out and installed then on the engine then set it in the car. I think you may have to install most any header from underneath.
3rd Gear
Joined: Oct 2007
Posts: 3
Likes: 0
From: Powder Springs GA
I put Hooker Ceramic Metalic headers on my '81 last year. You will have to disable the complete A.I.R. system, which also means a new carb, a new Intake manifold, and a new ignition system. I also had a custom x-pipe exhaust installed. In addition to the Hooker headers I used an Edelbrock intake and carb., and also an MSD High Spark ignition with the spark box. WHAT A DIFFERENCE. I used the stock mufflers, but they might be the next to go...
The reason you have to disconnect the A.I.R. system is because it is integrated with the exhaust and the pump. AND the computer adjusts the carburetor and timing based on, among other things, recirculated emissions. Good Luck. It won't be cheap...
I can send you pictures if you like.
Jim
The reason you have to disconnect the A.I.R. system is because it is integrated with the exhaust and the pump. AND the computer adjusts the carburetor and timing based on, among other things, recirculated emissions. Good Luck. It won't be cheap...
I can send you pictures if you like.
Jim
Drifting
Joined: Sep 2006
Posts: 1,986
Likes: 21
From: Columbus MN
My ceramic dynomax fit well and only run around $300. However, I can't comment on how to install them with the engine in the car. I had the engine out and installed then on the engine then set it in the car. I think you may have to install most any header from underneath.
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Drifting
Joined: Aug 2003
Posts: 1,424
Likes: 0
From: Lakeland FL
The stock '81 cross member does not have holes through it. It's been a while since I've seen my stock cross member but I believe the exhaust just ran under it. I've got the Keisler cross member in now from my tranny conversion and side pipes.
Drifting
Joined: Sep 2006
Posts: 1,986
Likes: 21
From: Columbus MN
Let me know if you can't find them.
Race Director
Joined: Mar 2008
Posts: 15,161
Likes: 17
From: coffee
My '81 has nasty old rusty headers on it that the PO put on. The cars came with O2 sensors also, so as mentioned, you will basically have to ditch the carb and distributor if you want to run new exhaust. I always planned to do so myself anyway. I'll be starting that phase of the project in a month or so when a new crate motor goes in.
I am leaning toward the Dynomax headers myself, just to keep the cost down on a ceramic coated set. For a bit more money, you might consider a set of Stan's Tri-Y headers which perform extremely well on mild street engines (lots of torque).
I am leaning toward the Dynomax headers myself, just to keep the cost down on a ceramic coated set. For a bit more money, you might consider a set of Stan's Tri-Y headers which perform extremely well on mild street engines (lots of torque).
Le Mans Master
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
any new exhaust pipes or headers can have a o2sensor bung hole put in ,so that you can hook up your o2 sensor .on my 82 with a computer ,the A.I.R. is deleted.did not affect the computer at all .the computer ,reads the exhaust o2 sensor then adj the timing and the carb .change the headers from underneath .have the shop put in the o2 sensor . car should run fine .
