How hard is it to install SFCs, bolt ons?

**Wheeler99WS6** · 10-15-2006, 02:50 PM

I was wondering how hard it would be to install some bolt on SFCs? What all is required, am I supposed to drill holes for bolts or do the bolt up to existing holes? Is this something I should try myself or should I take it to somewhere that has a roll on lift? I obviously dont have one of those I would have to try and bolt them on with car on the ground. Let me know guys.

Wheeler99ws6

**INMY01TA** · 10-15-2006, 03:05 PM

They are usually welded on.

**Wheeler99WS6** · 10-15-2006, 03:57 PM

thats true, but i dont know how nor do i have a welder so i was wondering about the bolt on ones, but bot even sure if i will be able to do them myself either, if not and i have to take them to a shop i will go with the weld-ins for sure.

**Wheeler99WS6** · 10-15-2006, 05:54 PM

I am curious if this could be done at home, i dont have a roll on lift or anything so it would be done with the car on the ground. If i have to take it somewhere i will just go with weld ins. Let me know if any of you have ever done the bolt ins yourself, is there existing holes you use for the bolts? Or do you have to drill holes? I honestly dont know, I tried to do a search and came up with nothing.

**rbob93** · 10-15-2006, 06:44 PM

About an hour and a half lying on my back in the driveway.

Gotta cut the heat shield for fuel lines on the driver's side, piece of cake.

**Wheeler99WS6** · 10-15-2006, 06:49 PM

no drilling of holes or anything? What brand did you end up going with, did they come with instructions?

**rbob93** · 10-15-2006, 07:53 PM

Originally Posted by Wheeler99WS6

no drilling of holes or anything? What brand did you end up going with, did they come with instructions?

SLP......just had to trim the heat shield and muscle a bit with the center brace......probably helps not to tighten up until all are in place....instructions are in the box

And what a difference!!

**Wheeler99WS6** · 10-16-2006, 04:05 AM

thanks for the info

**Sunset T/A** · 10-16-2006, 06:42 PM

No drilling required, all holes are in the chassis already. The SLP bolt-on's as I installed uses plates with threaded holes that slide inside the hollow part of the chassis. You can read the installation instructions on the SLP website, before you tackle the job if you are unsure if you can do it.

**NHRAMAN** · 10-16-2006, 06:47 PM

WELDED is Better though...any muffler shop can do it..shouldn't be too much money.

**tbaum** · 10-16-2006, 08:03 PM

Good luck with the whole bolting in thing. I really have to doubt the effectiveness of bolted in SFC's. If I were you I would really look for someone who knows how to weld. Mine made so much difference in my TA. Spend the extra cash and get it done right. The weld needs to look like a roll of nickels when it's done.

**INMY01TA** · 10-16-2006, 08:39 PM

Welded or not at all.

**oneBADDz** · 10-16-2006, 09:03 PM

Originally Posted by tbaum

Good luck with the whole bolting in thing. I really have to doubt the effectiveness of bolted in SFC's. If I were you I would really look for someone who knows how to weld. Mine made so much difference in my TA. Spend the extra cash and get it done right. The weld needs to look like a roll of nickels when it's done.

and who says welded is right and bolt-in are wrong? Do you weld your headers to the heads? Do you weld the intake on? Bolt-in are fine

**tbaum** · 10-17-2006, 01:12 PM

There is a big difference between headers and a piece of metal that adds to structural support. Headers have air go through them SFC's keep the entire car stiff. Listen...each to their own but I would get them welded in. I just can't fathom how bolt-in's would even come close to adding the same structural rigidity as welded in.

**INMY01TA** · 10-17-2006, 01:14 PM

Originally Posted by tbaum

There is a big difference between headers and a piece of metal that adds to structural support. Headers have air go through them SFC's keep the entire car stiff. Listen...each to their own but I would get them welded in. I just can't fathom how bolt-in's would even come close to adding the same structural rigidity as welded in.

**oneBADDz** · 10-17-2006, 01:39 PM

to each his own, but bolt-in are great. Just because you can't fathom it doesn't make it untrue. I'm not trying to argue, I'm just telling you they are better than you think

**AKIRA** · 10-17-2006, 02:04 PM

I cant see why anyone wouldnt even weld in the bolt ons!

I had mine welded on when I had the mustang. I got a muffler shop to do it and I remembered it being pretty cheap.

**Wheeler99WS6** · 10-17-2006, 02:17 PM

lol. Thanks for all the opinions fellas.

**NHRAMAN** · 10-17-2006, 03:15 PM

Originally Posted by oneBADDz

and who says welded is right and bolt-in are wrong? Do you weld your headers to the heads? Do you weld the intake on? Bolt-in are fine

are you in the same world as us ????

**firesilver** · 11-09-2006, 03:22 PM

So is it the same or even better if you bolt them on, and then get them welded in.

might bring the labor cost down some if their already in place and everything.