I've been looking & searching for which SFC's to put in
ive got a 88 Iroc Z, T-Top car and im wanting to put in dual 2 1/2 exhaust so clearance is an issue
so far im thinking Hotckiss or Spohn are in the lead
but im open to any & all suggestions
i also read that round is better than square tubing
im mainly worried about fitment problems, i dont want to cut or beat my car up to get SFC's in
im wondering how the Comp Engineering #CEE-3017 from Summit with crossmember fits? anyone know anything about them?

Thanxs, Wolffy

 

The comp. eng ones I bought and shipped back I was less than impressed with. Not sure what part # though, it's been several years. - Yes, round tube is supposedly better. - As for your dual exhaust, why? - Ton's of work for zero performance gain.
Otherwise, everyone has their own opinion on which brand is best/better/etc. I personally like BMR's stuff. I know of other people who say they won't touch BMR stuff too....

 

sry i forgot to mention that im wanting duals cause im going with a built up 383 stroker & to my knowledge it will do better than a single 2 1/2 or even 3 inch pipe

 

i give A+ to UMI i have alot of their suspension installed

 

single 2-1/2, obviously. 3, 3.5, or 4 would cover you, and it'd be A LOT less work, w/o the losses of ground clearance or the availability of parts that don't interfere.

 

duel exhaust is retarded...... just hangs down and it won't sound any different than a nice single exhaust.....

 

 

aight - I screwed. Turned an sfc ? into an exhaust ?. - I have true duals that have factory ground clearnce(or better) but I did a lot of subframe modification to do so. After doing it, my opinion is that it's not worth it. I could have made the same power with a good y-pipe and good single exhaust system. I only did it because I was doing hamoemade sfc's and lt headers at the same time and it made sense to just go ahead and do it. - Anyhow, a good 3" system will flow just fine for around 525hp. Unless you've got some really good/really big aftermarket heads, a monster of a cam, and serious compression you're not gonna see more than that. If you really want more, go to a 3-1/2" system. - The sound of duals is different, but the power isn't.

- back to sfc's. - It's all personal preference. Alston's seem to be one of the preffered on this board. They are a great product with little if any fitment issues(from my experience reading posts on this board). BMR is also another great company that sells really good parts. A lot of people like Spohn. I've seen enough fitment issues and for the $, I don't see it.

 

well i checked out BMR's website & they dont list SFC's for 3rd gens anymore
the alstons look pretty decent, little to no fitment or clearance issue's
and they are less expensive than Spohn's
it looks like i might go with them
thanxs
now onto the exhaust issue, so your saying a single 3" (or so) pipe will be more than enough for my planned buildup?
honestly yeah if 3" will more than work, why go thru all the expense & hassle of duals

 

good deal
Single 3" will flow enough for around 500hp. I've seen as much as 525, and they guy went to 3.5, only gained about 6hp. - Do a search, then post on the exhaust forum if you have any questions not answered via the search.

 

Couldn't be more wrong. It can be tucked up and it definitely sounds different than a single.

 

BUT the single still sounds great!

 

If you have a V8 i dont think you should even consider any single exhaust less than 3". The factory came with 2 3/4" on my car, and when it rusted through, i took it to an exhaust place that put 2 1/2" on. It killed power through out the power band, it wouldnt even try to take off. I drove it to a performance muffler shop and they cut it off and called it a POS and mandrel bent me some 3" aluminized tubing. VROOOM!!!

 

Here's my two cents worth. I had dual 2.75" once and hated it, they were tucked up as well as could be done but you still need to leave approx. 1/2" for expansion, and with the expansion comes a lot of problems depending on how you route them. they crossed over the axle and turned 90 degress to flow through a glass-pack then exit on the opposite side of the car, for each side; and they tended to break the mount no matter how we mounted them. Unless you can compress your pipes into an oval to keep the cross-sectional area I wouldn't reccomend duals. I ended up tossing them in favor of a single 3" from SLP and runs without a cat. Much happier, and sounds as good if not better.(Plus it's all stainless) had some headaches with the headers however since they aren't on a common flange to mate to the head. As for sfc's, I have weld in Global West and I am extremetly happy with them. I can jack my car at virtually any point along the connector and lift three tires off the ground, Nuff Said!

 

got any pics of the global west sfc?

 

I don't have any pics right now, but I do have to replace my front sway-bar bushings one of these days so maybe I'll get some pics then. Until then, you can check out whatever they have on their site. GLOBAL WEST SUSPENSION CAMARO MUSTANG CHEVELLE NOVA TUBULAR ARMS BRAKES BUSHINGS
SUBFRAMES RACING They are weld in tubular sfc's that are tack-welded along the rocker panel in addition to the front and rear subframes. Like I say, I'm pretty happy with them, makes jacking my camaro up a lot easier since I can do it anywhere along the side of the car, and they don't give. I've got predominantly GW suspension right now, no bushings on the rear, all heim joints. I need to upgrade to their Del-Alum bushings for the front a-arms, and their traclink, and I"ll be done. The only non-GW piece I have is an Edelbrock Strut-Tower brace that I have yet to install. Maybe after the new carb in a few weeks. Take care now...

 

Agreed on the Comp. engineering pieces,I've got them on my car.I bought em' on ebay for $35,but still wouldn't call them a bargain.
They work well,but I did a lot of extra bracing,so I might as well have built them myself to begin with.Also,If I didn't fabricate for a living,they would have been a bit of an ordeal to install straight and true w/ no twisting.

As far as dual vs. single,it's really a prefference moreso than an advantage situation.I ran both on my first 406,which was making 550ish HP,and never saw a consistant advantage performance advantage to either one.I had a 3 1/2" with a good Y,and single Flowmaster,and dual 2 1/2" with Flows,and 1/4 mile ETs never varied more than a tenth either way,and never consistantly one way or the other.

I run duals because I prefer the sound.With a smallblock and 2 1/2" pipe,you CAN tuck them up nicely,although I have raised the floorpan under the rear seats.With my hooker longtubes on a BB,the only place that ever hits is where the pipes dive towards the center of the car,they have to hang down enough to cross over the SF connectors.
My 2 cents,on a daily driver I'd stay single.Otherwise,go with your personal preference.If we were that worried about ground clearence,we'd all be 4x4 guys!

 

Back on topic about the SFC's. I know Spohn, Global West, Alston, and BMR make them for our rides. Any other companies? Any feedback would be great. Wieght is always a factor!

 

UMI performance. Looks like a set of SFC's that BMR might make. I personally like the look of UMI's a lot. I'm thinkin about goin with those. UMI's stuff looks pretty heavy tho. I dont want to pick up a lot of weight right now. but later im gonna do some kind of afr headed super charger setup so im kinda torn.

 

Thanks, I'll have to research the wieght....

 

i like my alstons but, fit wasn't exactly perfect although if you're going to have someone else install them and they have acess to a screw jack and some c clamps it was a sinch,i had to pull my tranny cross member to have the 1 seem welded and there was a mild gap on the rear subframes but, i had a perfectionist welder doing mine so it was like *gap be gone in no time*. If i were to do it again though i'd probably buy umi sfc's.

 

Kenny Brown Performance makes some. They are probably the most expensive out there though.