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Frame stiffener set up for 1971 fastback? Anyone have a good solution?


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I will be working on some new ones this winter. All the current made ones do not use great materials and can be much stonger. They use the softest cheapest steel and yes they help but can be much better. I want to make them and make patterns that will be free no charge. Too many are wanting to gain not support those that enjoy the cars. 

When a man is in the woods and talks and no women are there is he still wrong??:P

David

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Holman &Moody would cut out the top of the rockers and install tubing ,torque box to torque box,weld it in then reinstall the top of the rocker.I have never liked the aftermarket subframe connectors apart from being ugly,the floor support rails are just that.The strength in the car is front rails,out to TBs,rockers,TBs,frame rails.

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5 hours ago, 71Rustang said:

Holman &Moody would cut out the top of the rockers and install tubing ,torque box to torque box,weld it in then reinstall the top of the rocker.I have never liked the aftermarket subframe connectors apart from being ugly,the floor support rails are just that.The strength in the car is front rails,out to TBs,rockers,TBs,frame rails.

I wish I would have thought about this a few year ago when I redid my floors. It would have been a good time to reinforce the floor rails.

20160929_171923_edit2_small.jpg

 

1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump

Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes

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“If you can't explain it simply, you don't understand it well enough.”

--Albert Einstein

 

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  • 1 month later...

I have the Total Control Product subframe connectors on my ‘69.  There is one connector on each side going from the front to rear rail, then an x-brace that bolts in between them.  Above that there is the typical export brace and monte-Carlo bar.  I have to say the export brace and M/C bar were the best investments I made for that particular car.  The ‘72 could stand for the subframe connectors—these things have a lot of flex.

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1931 Ford Model A Station Wagon
1969 Mach 1 - 351C, TKO-600, 4WDB, R&P, A/C, Shaker, Fold Down, etc.
1972 Mach 1 - 351C, FMX, PDB, PS, A/C, Fold Down, Console
1996 Mustang Cobra Convertible - 10psi Procharger, 436rwhp

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I will be working on a new sub frame connector and also roll cage for 71 - 73. I will be using the new steels that are two to four times stronger than what is currently used and do not have weld issues. Most if not all of the connectors us CRS nothing alloy. The UHSS Ultra High Strength Steel I am going to use is 4 times stronger than CRS.
It looks like cold weather is going to shut me down on body and paint so I will move on to the connectors and roll bars. I was automotive product, process, and tooling engineer and used the UHSS on many projects in cars and farm equipment.

When a man is in the woods and talks and no women are there is he still wrong??:P

David

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