I work at a speed shop and live in canada. if I had money coming out my *** i'd buy the sphon SFC. and also I believe alston as well. as they work together. however why not just make my own using chromoly tubular metal? anyone agree? anyone got any pix of mounting areas for the BEST place to mount ur SFC's?
and cross brase perhaps as well
cheers
blake
and cross brase perhaps as well
cheers
blake
Mine are made from some 2" square tubing. They run roughly under the center of the front seats. It takes a bit of work to angle and gusset the ends to make a clean appearance where they're welded on.
There's no specific location where they need to be welded to the subframes. Everyone has they're own idea where they should go. Some of the aftermarket ones run roughly where I have mine. Others run along the rockers. The passenger side is the hardest when you need to clear an exhaust system. Mine originally had a sectioned notch to go under a 3" pipe. The exhaust is long gone but the notch is still in the SFC.
There might be some pics on my web site that you could see the SFC.
There's no specific location where they need to be welded to the subframes. Everyone has they're own idea where they should go. Some of the aftermarket ones run roughly where I have mine. Others run along the rockers. The passenger side is the hardest when you need to clear an exhaust system. Mine originally had a sectioned notch to go under a 3" pipe. The exhaust is long gone but the notch is still in the SFC.
There might be some pics on my web site that you could see the SFC.
Senior Member
how thick is your square tubing?
I can't remember. Probably has a wall thickness of only 1/8". It doesn't need to be thick and heavy.
Supreme Member
Mines made out of 2.5" rollcage tubing. Works AWESOME.
Senior Member
I can get some 2 inch rollcage tubing. is that strong enough or is it overkill?
i made mine out of 2" square. i forget the wall thickness but they're probably a little thicker than they need to be (cause they are heavy! about 35lbs for the two).
Senior Member
AM91Camaro_RS those look awsome. how much did those stiffen up your car? would it have made a difference if you had put them on the frame peices? thanks
thanks. i really can't feel that much of a difference in the stiffness of the car over than bumps feel a little rougher. t-tops still squeek a little. what do you mean "if i had put them on the frame pieces"? on the front, the are attached to where the subframe connects to the rocker panels and on the back they are attached to the rear subframe via the LCA bolt (are a few welds). then, the diagonal braces are welded to the subframe right at the tranny crossmember.
I'm just wondering if I should do something like that (thanks for the pics) and then put in a cross brace as well ????? is that not what people are trying to achieve when the use the sphon SFC and the alston ones both together? they said it works really freakin cool. my other car is a full framed car (80 malibu) just dont like this unibody deal!!! lol but I'm guessing making a cross brace somehow would really work well basiccally an 'X' between the two that run front to back. just gott worry about exhaust cleaerances etc. however I wanted to run dual 3" and seen some guys run it down the drive shaft housing, so I think thats where i will run mine. good for ground clearance and then I would be able to mock something like this up as well.
tell me what you guys think? I havne't had a good looksee under there. only off jackstands and I'm not in the phase of about to do this...just planning ahead.
cheers
blake
tell me what you guys think? I havne't had a good looksee under there. only off jackstands and I'm not in the phase of about to do this...just planning ahead.
cheers
blake
Senior Member
I just saw that your braces connect to the front part. where you have your lift point is where I have seen some of the other sfc connected. yours look more heavy duty.
yes, i thought about connecting mine where i have the lift under the front but i didn't because i, personally, felt like it might allow more flex in the connectors. but, if they're built/welded right, that may not be an issue.
I'll try to get some pics of mine this weekend. The car's up on 4 jack stands now.
i've also got pics from the back and pics of the sfcs before install if anyone's interested. i don't wanna hog the bandwidth on here but if people are interested, i'll host them somewhere or something.
Senior Member
2" square tubing works good as any. I cut the angle on the front to fit up into the "frame" in the front and then welded them to the bottom of the "frame" in the back. I also have some pics if needed.
Senior Member
I would like to see some more pics. I like to see what everyone has and get some ideas for myself. thanks alot.
ok, I went ahead and hosted them on my site so, they might stay for a long time...they might not.

Senior Member
I really like those sfc's. I also noticed your exhaust. I like the collecter idea. did you notice a difference in handleing when you boxed in your lca's?
thanks! yeah, the exhaust was done custom (obviously). I didn't really box the LCAs for handling purposes but more for launching. I drag race the car more than road race or anything of that nature. I did notice that it spun the tires more on launch than it did before boxing them. that, in essence, was my goal...transfer more tq to the rear tires. New tires made up for that, though as the old ones were OLD and wore out!



