Great work Ron! It will be interesting to see what you think of the performance gain when you are all done and romping on it. I want to do this eventually when the Mach gets a blower, maybe even sooner.

I plan to take it to Adams Motorsport Park after to see what it will do. I ran the Cobra on the street tires and I was running 49.xx so I'll do the same and see what improvement it makes. The torque arm is supposed to give it more bite and at AMP I spend most of my time in 2nd gear which would just spin before.

I went and got more Argon today so I could finish up the welding. Tonight I made a gusset for the passenger side pinion bracket because I didn't like how little of the round tube was welded to the rectangular tube.

You can see in this picture how little is connected.



So I made this.





Once I had that made I finished welding everything up.









I also partially painted it. I'll finish it up tomorrow night.

Don't forget that once it's installed you'll need to significantly increase the rear spring rate.

I know. I just don't know what springs to go with. Right now I have MM Road & Track springs but I don't have any idea what the rates are. Plus I have Tokico Blue shocks right now but I want to change them to Koni SA to match the front ones.

You'll need to change all the springs and there's a pretty good chance that with the added rear grip the car will oversteer more. Rear wheel rate of 300-550lbs will be needed with a front rate of 750-900 for absolute best handling with a trade off in ride quality over 750.

Here is a list of non MM springs that commonly pop up used, mix and match to save some coin.

Aftermarket Spring Rates
Manufacturer/Part Info Front Spring Rate (lb/in) Rear Spring Rate (lb/in)

Ford Racing B Springs (M5300B) 425-530 (progressive) 200-300 (progressive, solid axle)

Ford Racing C Springs (M5300C) 650 (linear) 200-300 (progressive, solid axle)

Ford Racing F Springs (M5300F) 460-570 (progressive) 170-310 (progressive, solid axle)

Ford Racing G Springs (M5300G) 500-570 (progressive) 170-310 (progressive, solid axle)

Eibach Pro-Kit Springs (94-04 Mustangs) 425-530 (progressive) 200-300 (progressive, solid axle)

Eibach Sportline Springs (79-04 Mustangs) 425-630 (progressive) 140-295 (progressive, solid axle)

H&R Sport Springs (94-04 Mustangs) 490-575 (progressive) 205-250 (progressive, solid axle)

H&R Sport Springs (99-04 Cobra) 700-760 (progressive) 685 (linear, IRS)

H&R Super Sport Springs (94-04 Mustangs) 700-760 (progressive) 275-300 (progressive, solid axle)

H&R Race Springs (79-04 Mustangs) 750-850 (progressive) 260-280 (progressive, solid axle)

H&R Race Springs (99-04 Cobra) 750-850 (progressive) 770 (linear, IRS)

Steeda Sport Springs (79-04 Mustangs) 650 (linear) 200-250 (progressive, solid axle)

Steeda Sport Springs (03-04 Cobra) 720-780 (progressive) 650-790 (progressive, IRS)

Steeda Competition Springs (79-04 Mustangs) 750-850 (progressive) 250 (linear, solid axle)

StangSuspension Springs (94-04 Mustangs) 490-575 (progressive) 205-250 (progressive, solid axle)

You make me jealous. I wish I knew how to weld. :thumbs_up:

Ditto :(

Your issue is your welder. You just need to practice with it to get use to how it welds.

Finished installing the TA today. I won't know how it drives until I put the intake manifold back on the car. I ordered the gaskets for it and they will be here next Tuesday. I didn't modify the exhaust so I'll see if it drags or rattles when I drive it. If it does then I'll modify it later.