any one know where i could find the tubular sfc's. i heard they are alot steonger then the box tubing. i just put in a new 350 with a cran cam #104224 and it have a nice amount of tq

 

There are several brands of tubular SFC. I sell the Alston Racing brand. Just click on the TDS (Top-Down Solutions) sponsor link on the right-hand column. There are several advantages to the Alstons. E-mail or call me if you need more info.

Lon

 

Spohn makes a nice set. Those are the ones I am going with.

 

which would be better bolt on or weld on?

 

Weld on. Bolt ons work fine at first, but over time, the bolt holes become worn and allow movement. Plus, I don't like the idea of something that big having the possiblility (however remote) coming un-bolted.

 

It depends on how you plan to install them. I always recommend welding on the SFC's (including the bolt-on style I sell). The advantage of the bolt on is that you may save some money on installation by bolting them on yourself, then driving the car to a shop and having them welded in place. Some shops are unfamiliar with SFC installation and really rake you over the coals on the price of installation. I save the step of drilling the body and bolting them in, (not to mention the cost of the optional SFC install kit) by just welding them in from the start. That is why I chose to make the install kit an option rather than including it in the price. I don't recommend leaving them JUST bolted in for a long time (as in years) without welding in because the bolt holes can eleongate leaving the SCF's loose and subject to increased flexing. Bottom-line, don't get caught up in thinking the Alstons are just a bolt in SFC. Not the case. They have formed cups that tightly secure to the front and rear subframes on the car and allow for welding of the SFC to the body.

Lon

 

well the welding is nothing my friend does welding on the side so he'll weld them for me. do all the kits like the Spohn have the two other tubes with the that it looks like it goes from the sfc to the frame where the frame from the motor is on. im not sure if thats right what im saying

 

Most do but the TDS(alston) ones go directly from the front SFC to the rear. the others you can buy are usually Perimiter frame style.

 

which would be better the alston or Spohn. and will both of these work with the 3' exhaust

 

i highly recomend the Alston racing ones that LOn above sells on his T-D-S website; they are Tubes, not boxed,a nd have good ground clearance and fit over most exhausts

i bought them about 8 months ago, and love em; i bolted them in, but even drilled Extra holes for extra bolts; yes over time they may grwo, but by then ill have the chance to put a few welds on it

the awesome thing about bolt in ones, is that the bolts arent going to break; welds can break under high stress; and if one or both break over time, ur left witha hanging down sfc ; bolts wont let that happen, there are many different ways u can go abnout keeping the nut on the bolt from backing off; im happy with my alstons, thanks Lon !

 

so how does the alston going it just bolts in the back or in the back and the front

 

the one good thing it looks like on the Spohn is this.