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Install new engine with headers on or not?

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Old Jun 6, 2021 | 10:01 PM
  #1  
89fast5oh's Avatar
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From: Manitoba, Canada
Car: 1987 Z28 IROC
Engine: 6.2L
Transmission: 700R4
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Install new engine with headers on or not?

Soon I will be swapping my 383 into my 1987 Camaro. While the engine is on the stand I thought about putting the Hedman 68470 shorty headers on.

I removed and installed the stock 305 TPI with the stock manifolds on with no issues.

Would the engine be easier to install with or without headers?
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Old Jun 6, 2021 | 10:53 PM
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Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
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Re: Install new engine with headers on or not?

Yes, easier to install without the headers on...
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Old Jun 7, 2021 | 05:50 AM
  #3  
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Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
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Re: Install new engine with headers on or not?

I used to keep a set of edelbrock tes headers on while swapping on an AC car. The ac box is the toughest place to clear. I have no idea if it'll clear with those hedmans though.
You can try it. If it doesn't work then it's not really a big deal to correct it.
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Old Jun 7, 2021 | 10:51 AM
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Re: Install new engine with headers on or not?

I think you'll find the installation easier without the headers. Even if its to get access to the engine mounts. I tend to drop the engine in without headers ,starter or power steering. It makes the lump more manageable when hanging from the engine crane.
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Old Jun 7, 2021 | 07:43 PM
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Car: '91 GTA
Engine: 421sbc
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Axle/Gears: Ford 9" with 3.89
Re: Install new engine with headers on or not?

Put the engine in the bay without the headers
While still on the engine picker, then install the headers moving the engine up a little , or side to side.
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Old Jun 7, 2021 | 08:15 PM
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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: Install new engine with headers on or not?

I install it with SLP headers on and rad/fans still in.. Normally leave the hood on to but in this case was putting on a aluminum hood so off the hood came..

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Old Jun 7, 2021 | 09:06 PM
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Re: Install new engine with headers on or not?

Generally, not.

There may or may not be a few "success" stories of doing it with them on,. but, ... generally, not. Lay the headers in the chassis, drop the motor in, hook up the headers, like everybody else. No real benefit to trying to defeat history in any case. Too eeeeeezzzzzy to just do it the right way and be done with it. Particularly if the steering and evap housing are still in it.
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Old Jun 7, 2021 | 09:17 PM
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Car: One owner '88 IROC 50k
Engine: L98 with bolt ons.
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Re: Install new engine with headers on or not?

If your putting it in from the bottom it works well to have the headers on but dropping it in from the top it's easiest to lay them on the chassis and drop the motor in.
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