Installing Headers!!
Installing Headers!!
Just wanted to know what i am getting myself into.....thinking about installing headers easy right?? Is it still easy with the engine still in the car, i have done it with the engine out before but never with it in, is it possible to reach all the bolts...and is it even worth trying?
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From: Northern CA.
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
Re: Installing Headers!!
I've installed Edelbrock shorties and Hooker long tubes with the engine in, no problems. Read the instructions that come with whatever you buy, some don't and they miss out on little tips that make things go smoother.
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From: Wittman,Az
Car: 86 IROC-Z, '71 RS
Engine: 305 TPI/ 350
Transmission: 700R4/TH350
Re: Installing Headers!!
It is ABSOLUTELY worth it! The low end torque gains from my hedman 68470's alone was worth it! Just be really patient! I still have all the emissions equipment in my '86 IROC so changing the rear sparkplugs now has to be done from underneath, but other than that, no problems! Good luck!
Re: Installing Headers!!
You will remove the motor mount bolts and you will be raising the engine. You may even need to remove the one tranny mount bolt or loosen it so you can raise the engine even more.
As long as you are OK knowing that many items will need to be removed as "make-ready work" then you are going in with your eyes wide open.
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From: Cincinnati, Ohio
Car: '89 GTA
Engine: 5.7L LS1
Transmission: 4L60E
Axle/Gears: 9 bolt 3.27
Re: Installing Headers!!
And if you have never done small block chevy headers before, coat the gaskets with RTV...you'll thank me later. And I would invest in stubby wrenches 5/16 or 7/16 depending on which size your header bolts end up being.
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Supreme Member
iTrader: (1)
Joined: Apr 2000
Posts: 5,321
Likes: 4
From: Northern CA.
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
Re: Installing Headers!!
It is easy, just takes a bit of time sometimes. Also, I never had to lift the engine and was able to get everything from the top. Headers themselves depending on what you buy might drop in from the top or bottom. My long tubes went in from the bottom like nothing.
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Joined: May 2009
Posts: 3,371
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From: Delaware
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: Installing Headers!!
Do yourself a HUGE favor, spray all the manifold bolts down the night before with PB Blaster. You will need a breaker bar too. I did everything from the top,i only had to go under the car to cut the stock ypipe off. Oh, and by the way keep a sawzall handy.There are also locking tabs on some tpi car's manifold bolts making it difficult to get a socket around. Just get a small flathead screwdriver to bend them back. I did not have to jack up my engine or remove my starter either. I installed Edelbrock Tes headers. Let me know how it goes.
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iTrader: (2)
Joined: May 2009
Posts: 3,371
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From: Delaware
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: Installing Headers!!
Oh, and most importantly. You will need 90 degree spark plug boots/wires. Shorter plus too. I used Bosch 7985. Be really careful not to break them when dropping in your headers.
Supreme Member
iTrader: (2)
Joined: May 2009
Posts: 3,371
Likes: 2
From: Delaware
Car: 91' Firebird SOLD
Engine: 350 TPI +bolt-ons
Transmission: 700r4
Axle/Gears: 3:42
Re: Installing Headers!!
You better make sure you have a matching ypipe ready that is designed to bolt to those headers too. It will be 99 percent easier after you get the headers installed.
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