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Header Fitment Hooker 6915
#1
Hello,

I have a 73 Mach 1 with a 351c, power steering & a C6. I purchased the hooker 6915 long tubes and have a question about the install.

I was able to easily install the passenger side tonight and took a quick stab at the driver side. I was unable to get it into position. Seems to hit the power steering gear box.

The instructions state that I need the car up at least 36” but with my jack stands and garage, I can not get it close to that tall. Does anyone know if the header will fit if I move the power steering gear box or do I literally need to lift the car that high for the right angle?

Thanks in advance.


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#2
I just put mine in and the car was only about 1.5 feet off the ground. However, I lifted the driver side of the engine up and put the header in from underneath. Went in pretty easy that way.

Scott Carpenter
Amsoil Authorized Dealer
www.scsynthetics.com
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#3
It is a tight fit from my experience. I have the same headers on my car. With stock 4V heads, it was a tight fit but the headers did not hit the gear box. You had the just get exactly the right angle to work them in, but they fit.

When I went to the Aluminum Trick Flow heads, the different in port location was just enough to require me to dimple one of the primary tubes.

1971 Mach 1
351c with Trick Flow Heads
Retro Roller conversion
FMX

[Image: 1971-MACh1.jpg]
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#4
(09-08-2019, 06:12 AM)71coop Wrote: It is a tight fit from my experience. I have the same headers on my car. With stock 4V heads, it was a tight fit but the headers did not hit the gear box. You had the just get exactly the right angle to work them in, but they fit.

When I went to the Aluminum Trick Flow heads, the different in port location was just enough to require me to dimple one of the primary tubes.


I think the angle is my problem. How high did you have the car?


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#5
Well I simply removed the motor mount bolt and jacked the engine up. Fit no problem. Thanks for the replies.


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#6
Sorry, just now saw the question. I do have a lift, so it was off the floor quite a bit. Glad you got it installed.

1971 Mach 1
351c with Trick Flow Heads
Retro Roller conversion
FMX

[Image: 1971-MACh1.jpg]
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#7
I've put them in with the car on jackstands without jacking the engine. Don't remember exactly how high it was, but no real issues.


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#8
What do you all have for H pipes? Anything off the shelf bolt up to these headers?


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#9
(09-19-2019, 05:07 PM)cjkcue Wrote: What do you all have for H pipes? Anything off the shelf bolt up to these headers?


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No, you need a custom bent h-pipe


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#10
Here's how I got the long ones back out and the short ones in...


https://www.7173mustangs.com/thread-hook...ght=hooker

'Mike'
73 Convertible - 351C/4V CC heads/4bolt/forged flat tops/comp 270/rhodes/mallory unilite/tri-power/hookers/glasspacks/c6/3.50 limited slip/Gear Vendors/Global West sub frames, strut rods and shelby style traction bars/ Rear sway bar/tilt steering (not original)

Pics of modifications included in:
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