Which subframe connectors have the most contact area?
Thread Starter
Joined: Nov 2002
Posts: 3,466
Likes: 5
From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Which subframe connectors have the most contact area?
Looking to stiffen up my crusty ride. Which SFC's tie the most points together?
Thinking about the Detroit Speed ones as they look the beefiest.
Thoughts?
Thinking about the Detroit Speed ones as they look the beefiest.
Thoughts?
Member
Joined: Aug 2008
Posts: 172
Likes: 16
Car: 88 gta
Engine: 5.8
Transmission: 700R4
Axle/Gears: 3.73 POSI
Re: Which subframe connectors have the most contact area?
you want something like this https://swracecars.com/product/82-92...me-connectors/
Joined: Mar 2001
Posts: 10,421
Likes: 2,084
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Which subframe connectors have the most contact area?
Detroit Speed hands down, but it's quite invasive and you better have metal fab skills.
Thread Starter
Joined: Nov 2002
Posts: 3,466
Likes: 5
From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Thread Starter
Joined: Nov 2002
Posts: 3,466
Likes: 5
From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Re: Which subframe connectors have the most contact area?
Whoa, just looked at the install for those Detroit Speed ones... holy hell haha.
Joined: Aug 2009
Posts: 1,972
Likes: 127
From: Los Angeles
Car: 1989 IROC Convertible
Engine: 350 TPI L98
Transmission: WC T5
Axle/Gears: 3.42
Re: Which subframe connectors have the most contact area?
The Spohn weld-in are very good and not invasive. The welding up can cost a few hundred. The SFC's MUST be installed while the car is sitting normally on its four wheels.
Joined: Mar 2001
Posts: 10,421
Likes: 2,084
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
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Joined: Apr 2017
Posts: 1,149
Likes: 445
From: Northern NY
Car: 1988 Trans Am GTA and 1979 Trans Am
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: Borg Warner 9 bolt 3.27
Re: Which subframe connectors have the most contact area?
The UMI's are pretty solid and non invasive, however if you have a aftermarket/larger exhaust there will be slight modifications to get them installed but that's the case with most out there it seems.
Joined: Sep 1999
Posts: 4,353
Likes: 308
From: NJ
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: Which subframe connectors have the most contact area?
I didn't think it was a big deal really. I only had a problem in one area on my car where the sheet metal was a little thin from some rust. I kept blowing holes in about a 1.5" section
The instructions are REALLY good, plus they have installation videos. You're really only cutting a long thin rectang out of the car on each side, drivers side moreso than the passenger.
Last edited by scooter; Aug 31, 2020 at 06:40 PM.
Joined: Aug 2013
Posts: 4,815
Likes: 906
From: MICHIGAN
Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: Which subframe connectors have the most contact area?
The Mopar guys have been installing through-the-floor braces like that in their uni-body cars for a long time. Makes for a very solid connection.
Joined: Sep 2005
Posts: 1,918
Likes: 326
From: NJ
Car: 1987 IROC-Z
Engine: 406 on N20 w/ EFI
Transmission: P.B. 700R4
Axle/Gears: 12 bolt w/ 3.91
Re: Which subframe connectors have the most contact area?
I have the S&W setup under my car, mine was put in about 9 years ago. They used to offer two "out-rigger" bars that spanned out about 10" off of each main bar, and these bars tied/bolted directly to the side-rocker panel under our cars. for sure they are on my car but I don't see them in that S&W website photo.
Junior Member
Joined: Apr 2005
Posts: 60
Likes: 4
From: Holland
Car: 82 Transam
Engine: 305 soon 383
Transmission: auto.
Re: Which subframe connectors have the most contact area?
I have the S&W setup under my car, mine was put in about 9 years ago. They used to offer two "out-rigger" bars that spanned out about 10" off of each main bar, and these bars tied/bolted directly to the side-rocker panel under our cars. for sure they are on my car but I don't see them in that S&W website photo.
You mean this one?
Link : SWRacecars
Joined: Sep 2005
Posts: 1,918
Likes: 326
From: NJ
Car: 1987 IROC-Z
Engine: 406 on N20 w/ EFI
Transmission: P.B. 700R4
Axle/Gears: 12 bolt w/ 3.91
Re: Which subframe connectors have the most contact area?
You mean this one?
Link : SWRacecars
Link : SWRacecars
yup, thats it, thats hte one I have. the outriggers are a nice easy place to put the floorjack and jack the whole side of the car up at one time. teh exhaust routing for my 3" exhaust is tight, but it works. car is solid. getting a 6 point S&W roll bar installed too this winter and S&W is top notch stuff.
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Dholland17
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Jun 30, 2020 12:47 PM