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Need tactical advice on floor pans and subframe install.
#1
Hey crew! Making progress on my 71 Mach 1. Up next she needs a new pass side floor pan, and I want to add subframe connectors.

My question is, what is best tactical approach? Should I install floor pan and then add subframe connector, or should I cut out rusted floor segments, install subframe and then weld on floor pans over top?

You guys never steer me wrong! Thanks!




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#2
If it was me, I would do one side at a time. Cut out floor pan, fit the subframe connector, weld it, then fit and weld new floor pan. When you fit the subframe connectors, make sure you are sitting on a flat level surface with car's weight on the suspension. Pretty easy straight forward job. If you do one side at a time you have a minimal chance of anything moving on ya.

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 28ivsix.png]




                                                                                             
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#3
(11-28-2017, 10:23 AM)turtle5353 Wrote: If it was me, I would do one side at a time. Cut out floor pan, fit the subframe connector, weld it, then fit and weld new floor pan. When you fit the subframe connectors, make sure you are sitting on a flat level surface with car's weight on the suspension. Pretty easy straight forward job. If you do one side at a time you have a minimal chance of anything moving on ya.


Great advice. I have a 1/2 inch or so sag on the passenger side from a broken spring. It sounds like I should rectify that prior to messing with the pans. The driver side pan is in really good shape, I think it just needs a pass side pan.


[Image: 377a6e1553ae2e1bfd8b72e9aa1f8c76.jpg]


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#4
(11-28-2017, 12:02 PM)sciabola13 Wrote:
(11-28-2017, 10:23 AM)turtle5353 Wrote: If it was me, I would do one side at a time. Cut out floor pan, fit the subframe connector, weld it, then fit and weld new floor pan.  When you fit the subframe connectors, make sure you are sitting on a flat level surface with car's weight on the suspension. Pretty easy straight forward job. If you do one side at a time you have a minimal chance of anything moving on ya.


Great advice. I have a 1/2 inch or so sag on the passenger side from a broken spring. It sounds like I should rectify that prior to messing with the pans. The driver side pan is in really good shape, I think it just needs a pass side pan.


[Image: 377a6e1553ae2e1bfd8b72e9aa1f8c76.jpg]


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Yes definitely fix that spring first. If its sagging in that corner and you install the subframe connectors like that, you may end up with a permanent lean even with a new spring.

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 28ivsix.png]




                                                                                             
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#5
Make sure to check the rear curved area of the floor pans. Water accumulates there and will rust it out, just like in mine.

[Image: 20170810_173831.jpg]

You can see that someone tried to Bondo over it at some point but its moved so much all the bondo broke loose over the separation.
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#6
Personally, I would do all repair work prior to installing subframe connectors. Why? Once they are installed, they may cover damage that you didn't see earlier. They are also fairly hard to remove. Do what's necessary first before adding "nice to haves".

Let me check your shorts!
http://midlifeharness.com

[Image: Flamicon2.jpg]


[Image: oldfart.png]
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#7
I did my floors first then decided to install sub-frame connectors "while I was at it"
Could be a bit easier without the floor in place but if you're making your own connectors I would advise to put your floors in first so you can check your angles before welding
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#8
My plan now is to fix front suspension, let her settle in and then tackle the floor pans. Going to take Midlifes advice and wait on subframe. I want to make sure she is straight and level with suspension and floor pans before I weld in subframe.


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#9
(11-28-2017, 12:02 PM)sciabola13 Wrote: Great advice. I have a 1/2 inch or so sag on the passenger side from a broken spring.
You could always name the car "Ilean"   Haha
Sorry, couldn't pass it up after the day I've had.
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#10
(11-29-2017, 08:26 PM)RacerX Wrote:
(11-28-2017, 12:02 PM)sciabola13 Wrote: Great advice. I have a 1/2 inch or so sag on the passenger side from a broken spring.
You could always name the car "Ilean"   Haha
Sorry, couldn't pass it up after the day I've had.


Dude, it is just one of those weeks!


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