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Topic: Subframe connectors and seatbraces wall thicknesses? (Read 1614 times) previous topic - next topic

Subframe connectors and seatbraces wall thicknesses?

Hey guys I'm getting ready to put some connectors onto the bird and will most likely build some seat/cross braces as well, but I'm a little uncertain abut what wall thickness I should be running on the 1x2 tubing for the SFC's? At what point do I go past overkill? (I'm not planning on cutting up my floor, yet)

Also, are the seat braces mainly to provide a more robust mounting point for the seat tracks or to stiffen up and prevent twisting of the SFC's or both? I would imagine the main benefit of having them would be to stiffen up the chassis.

For reference I'm shooting for something resembling t3skidoo's setup.

http://www.foxtbirdcougarforums.com/showthread.php?t=19191&page=2&highlight=cross+braces
1987 Tbird 5.0 swap, go fast mods coming soon....

Subframe connectors and seatbraces wall thicknesses?

Reply #1
I just installed these on mine and called it a day:

http://www.globalwest.net/1979-2004_Mustang_performance_suspension_parts.htm#Subframe%20connectors:

The subframes (P/N 918) are full length and are mounted to the outside of the factory subframes.  I just used the Mustang seat support (P/N 920) as directed by GW.  Been on the car for over 10 years and doing just fine.

The car also has the Griggs uppers which require cutting the floor pan but these were installed a couple of years after the GW units.  With the lowers and uppers you can jack one corner of the car off the ground and it will end up with three tires off the ground and the doors will open and close with no issues.

Darren

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

Subframe connectors and seatbraces wall thicknesses?

Reply #2
I need to know what to use also without hacking up floorboards. My 351c is gonna have 450hp plus and good converter,so should prob stiffen her up. I ask before i buy this time cuz possible fitment issues???
1987 T-bird SportCoupe,302,5spd,8.8,3.27s,pbr brakes,spindles,2003 rear,18inch 06 gt rims!!!!:evilgrin:
2006 Gt Mustang,3v,5spd,8.8,3.55s,GT500rims.
1990 T-bird LX,3.8,aod,loaded,stock!!
1999 Trailblazer(wifes rig)

Subframe connectors and seatbraces wall thicknesses?

Reply #3
At a minimum use a full length subframe connector with seat supports.  The Griggs uppers are not that hard to install and look very nice when finished.

Darren

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

 

Subframe connectors and seatbraces wall thicknesses?

Reply #4
just get 10' of 1X2 and see if chuck has any seat supports left. If not, you can make your own by cutting up some extra 1X2 and making your own.
[SIGPIC][/SIGPIC]
***** Project "EVOLUTION" 1987 Cougar LS  & 1985 Cougar Convertible *****
[/COLOR]
5.0 HO 306 roller block, machined GT-40P heads, Wiseco dished forged pistons, Eagle forged floating I-beam connecting rods, Lunati pushrods, ARP bolts, Scorpion aluminum 1.6 rockers, Comp Cams Magnum 266HR, Explorer intake, 65mm TB, MAF Conversion, 19# injectors, Ford Racing stainless P-headers, 2-1/2" cat-less exhaust w/ Flowtech Afterburner lers , SC AOD with 2800 BDR torque converter, 3.73 T-Lok rear, CHE rear control arms, full 2-1/2" frame w/1" jacking rails & seat supports, Rear disk brakes, Turbine wheels, All original interior w/ floor shift upgrade .......
Pretty much every panel on my 87 is new, rebuilt, or re constructed. :D
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