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subframe connectors #1041744
07/27/11 11:08 PM
07/27/11 11:08 PM
Joined: Mar 2008
Posts: 571
Western NC
68Bullit Offline OP
mopar
68Bullit  Offline OP
mopar

Joined: Mar 2008
Posts: 571
Western NC
I know some connectors are pretty detailed with the custom fitting ridges, etc, but I'm just looking for some bolt-on or weld on straight square connectors. Anybody sell these fairly inexpensively?

Also, has anyone made their own????

Re: subframe connectors [Re: 68Bullit] #1041745
07/27/11 11:13 PM
07/27/11 11:13 PM
Joined: Jan 2003
Posts: 9,826
las vegas
70AARcuda Offline
master
70AARcuda  Offline
master

Joined: Jan 2003
Posts: 9,826
las vegas


Tony

70 AARCuda Vitamin C
71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield)
71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas)
71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
Re: subframe connectors [Re: 70AARcuda] #1041746
07/28/11 12:15 AM
07/28/11 12:15 AM
Joined: Jan 2003
Posts: 20,645
So Near, Yet So Far
topside Offline
Too Many Posts
topside  Offline
Too Many Posts

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Posts: 20,645
So Near, Yet So Far
I just bought enough 2x2 to do some for my '64 Savoy. I wonder if I should build a couple of sets and see if there's much of a market? Maybe I can beat the existing prices...what would be a good price?

Re: subframe connectors [Re: topside] #1041747
07/28/11 12:19 AM
07/28/11 12:19 AM
Joined: Jan 2003
Posts: 4,518
Indiana
MonGoo$e Offline
master
MonGoo$e  Offline
master

Joined: Jan 2003
Posts: 4,518
Indiana
much to the chagrin of everyone here i got the MagnumForce double tube style ones. Bolt on each end and to the floors.


My YouTube Channel, "Hoosier Garage"
https://www.youtube.com/HoosierGarage
Re: subframe connectors [Re: 70AARcuda] #1041748
07/28/11 12:21 AM
07/28/11 12:21 AM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
Too Many Posts
DaytonaTurbo  Offline
Too Many Posts

Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
Yup, I make my own out of 3x2" square tube .100 wall. I slot open the front part of the rear sub-frame in front of the front leaf spring perches. The 3x2 tube slides right in. The 3x2 tubes protrudes through the floor about 1" in height in the area where the rear passengers feet would go. I just cut the carpet's insulation over top of the connector and throw in my floor mats after and it's not noticeable. The part under the front passenger/driver feet area is under the floor so no modding needed there. Just weld it up to the torsion bar crossmember and in the back and you're done. Makes a huge difference in chassis rigidity. Before if I had one corner jacked up in the air, my doors would be very hard to open, now they open/close smooth even with one corner high up on a jack stand.

Here's a pic of my brother doing the same thing on his 66 charger while he was replacing rusted floor pans.


Re: subframe connectors [Re: 68Bullit] #1041749
07/28/11 08:00 AM
07/28/11 08:00 AM
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1 Offline
Too Many Posts
Challenger 1  Offline
Too Many Posts

Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
I used some old Direct Connection frame connectors on my 71. They are regtangular, like 1 1/2" X 2.00" or so.
Very easy to put in with no floor cutting. They made a huge difference and are plenty stiff. You don't need 2 X 3" tubing, even 2 X 2" is overkill for a street car. IMO.
Yes you can make your own very easy.

Daytona turbo, please make your picture smaller so we don't have to scroll back and forth.


Re: subframe connectors [Re: Challenger 1] #1041750
07/28/11 08:11 AM
07/28/11 08:11 AM
Joined: Dec 2004
Posts: 5,278
San Jose, California
D
DennisH Offline
Vacation
DennisH  Offline
Vacation
D

Joined: Dec 2004
Posts: 5,278
San Jose, California
USCartool. Weld them or don't bother.

Re: subframe connectors [Re: MonGoo$e] #1041751
07/28/11 09:25 AM
07/28/11 09:25 AM
Joined: Jan 2003
Posts: 21,599
San Jose,CA
migsBIG Offline
YouTube is my go-to news source
migsBIG  Offline
YouTube is my go-to news source

Joined: Jan 2003
Posts: 21,599
San Jose,CA
Quote:

much to the chagrin of everyone here i got the MagnumForce double tube style ones. Bolt on each end and to the floors.




getting the same ones for my charger. Figued it was asmall block car, but didn't want to cut up a clean floor. Great thing is you can bolt it in or weld, makes it pretty easy decision for the builder to decide.

Re: subframe connectors [Re: DennisH ] #1041752
07/28/11 09:34 AM
07/28/11 09:34 AM
Joined: Jul 2008
Posts: 30,253
Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
The village idiot's idiot

Joined: Jul 2008
Posts: 30,253
Florida STAYcation


FULLY insert into the front and rear OEM stubs and cut into and through the floor and weld everywhere ..

OR don't bother....

Re: subframe connectors [Re: dIc dOc Deity !] #1041753
07/28/11 09:45 AM
07/28/11 09:45 AM
Joined: Oct 2005
Posts: 4,935
WI
Dcuda69 Offline
master
Dcuda69  Offline
master

Joined: Oct 2005
Posts: 4,935
WI
Quote:



FULLY insert into the front and rear OEM stubs and cut into and through the floor and weld everywhere ..

OR don't bother....




Maybe for a race car,for a street car? Come on!! I did mine much like Challenger1. Used 1 1/2x 2 1/2 slid over the rear stub and welded front and rear. Never touched the floor pan. Made an entirely new car!!! Easiest and cheapest($40.00) mod I've done!

Re: subframe connectors [Re: Dcuda69] #1041754
07/28/11 09:49 AM
07/28/11 09:49 AM
Joined: Jul 2008
Posts: 30,253
Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
The village idiot's idiot

Joined: Jul 2008
Posts: 30,253
Florida STAYcation
You will find ALL SORTS of flex just doing it that way...

LIFT UP one corner .... and see for yourself...

Re: subframe connectors [Re: dIc dOc Deity !] #1041755
07/28/11 09:53 AM
07/28/11 09:53 AM
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1 Offline
Too Many Posts
Challenger 1  Offline
Too Many Posts

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Posts: 28,312
Cincinnati, Ohio
Quote:

You will find ALL SORTS of flex just doing it that way...

LIFT UP one corner .... and see for yourself...




BS How would you know??

Re: subframe connectors *DELETED* [Re: Challenger 1] #1041756
07/28/11 09:55 AM
07/28/11 09:55 AM
Joined: Jul 2008
Posts: 30,253
Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
The village idiot's idiot

Joined: Jul 2008
Posts: 30,253
Florida STAYcation
Post deleted by tboomer

Re: subframe connectors [Re: MonGoo$e] #1041757
07/28/11 09:59 AM
07/28/11 09:59 AM
Joined: Jun 2003
Posts: 21,346
It's a dry heat
gtx6970 Offline
Too Many Posts
gtx6970  Offline
Too Many Posts

Joined: Jun 2003
Posts: 21,346
It's a dry heat
Car I'm working on has the US Car Tool versions.

I didn't put them in, but heard they were a mother to fit to the floorpan. Fully welded they do look nice though.

My problem is they interfer big time with the parking brake system.
I'm still trying to figure out how to make them functional without looking all hookie.

6750670-DSC00867.JPG (194 downloads)
Re: subframe connectors [Re: dIc dOc Deity !] #1041758
07/28/11 10:06 AM
07/28/11 10:06 AM
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1 Offline
Too Many Posts
Challenger 1  Offline
Too Many Posts

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Posts: 28,312
Cincinnati, Ohio
Quote:

Hey DUMBbell ... try-it yourself.

You need to UPgrade your knowledge ...




I have done it myself, more than once. Like I said there is a huge difference between my cars that I do drive all the time. One has connectors and one doesn't. I can tell by driving them and jacking them up.

How many have you installed and driven???

I did the 3X2 through the floor on a 71 back in the early 80s, it was no better than the 71 I have now in the pictures above. It's a waste unless your gonna do roll bars for the track.

What have you done??

Re: subframe connectors [Re: dIc dOc Deity !] #1041759
07/28/11 10:07 AM
07/28/11 10:07 AM
Joined: Oct 2005
Posts: 4,935
WI
Dcuda69 Offline
master
Dcuda69  Offline
master

Joined: Oct 2005
Posts: 4,935
WI
Quote:

You will find ALL SORTS of flex just doing it that way...

LIFT UP one corner .... and see for yourself...




I have many times! My simple cheap little connectors took care of 90% at least. Read the OP,he's looking for something simple.....Challenger1 and I gave him some options, you told him don't bother unless you hack the floor up

Re: subframe connectors [Re: gtx6970] #1041760
07/28/11 10:08 AM
07/28/11 10:08 AM
Joined: Jan 2003
Posts: 7,978
Bethel Ct
A
AdamR Offline
master
AdamR  Offline
master
A

Joined: Jan 2003
Posts: 7,978
Bethel Ct
These have an opening for the e brake cable.

http://www.autobodyspecialt.com/cgi-bin/commerce.cgi?preadd=action&key=MP-AR19S

Ive used the Mopar Perf connecters and just had to move were the cable goes through the torsion bar cross member

Re: subframe connectors [Re: Challenger 1] #1041761
07/28/11 10:11 AM
07/28/11 10:11 AM
Joined: Jul 2008
Posts: 30,253
Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
The village idiot's idiot

Joined: Jul 2008
Posts: 30,253
Florida STAYcation
Quote:



I did the 3X2 through the floor on a 71 back in the early 80s, it was no better than the 71 I have now in the pictures above. It's a waste unless your gonna do roll bars for the track.

What have you done??




This statement is simply WRONG. Any chassis guy will tell you that. The pic that DT posted above is the CORRECT way of doing-it.

And other than that NON-competitive dragster you had ....I have done more work on cars in my life than you will ever THINK of doing.

WHY do you continue to step-in-it and have to eat your own words ?

U R nothing but a look-at-me SAD Sack

Re: subframe connectors [Re: 68Bullit] #1041762
07/28/11 10:17 AM
07/28/11 10:17 AM
Joined: Oct 2005
Posts: 4,935
WI
Dcuda69 Offline
master
Dcuda69  Offline
master

Joined: Oct 2005
Posts: 4,935
WI
Quote:

I know some connectors are pretty detailed with the custom fitting ridges, etc, but I'm just looking for some bolt-on or weld on straight square connectors. Anybody sell these fairly inexpensively?

Also, has anyone made their own????




Doc,what part of this question don't you get????

Re: subframe connectors [Re: Dcuda69] #1041763
07/28/11 10:20 AM
07/28/11 10:20 AM
Joined: Jul 2008
Posts: 30,253
Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
The village idiot's idiot

Joined: Jul 2008
Posts: 30,253
Florida STAYcation
Quote:

Quote:

I know some connectors are pretty detailed with the custom fitting ridges, etc, but I'm just looking for some bolt-on or weld on straight square connectors. Anybody sell these fairly inexpensively?

Also, has anyone made their own????




Doc,what part of this question don't you get????




Dc .. it was taken in a diff direction ... other people commented and I offered my

That's all .... and then DUMBbell came after me...AGAIN. And AGAIN showed his clownery.

Re: subframe connectors [Re: dIc dOc Deity !] #1041764
07/28/11 11:37 AM
07/28/11 11:37 AM
Joined: Jan 2003
Posts: 7,978
Bethel Ct
A
AdamR Offline
master
AdamR  Offline
master
A

Joined: Jan 2003
Posts: 7,978
Bethel Ct
Doc, put a cork in it all ready

Re: subframe connectors [Re: AdamR] #1041765
07/28/11 11:50 AM
07/28/11 11:50 AM
Joined: Jul 2008
Posts: 30,253
Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
The village idiot's idiot

Joined: Jul 2008
Posts: 30,253
Florida STAYcation
Hay AR ... the "cork" was in-it .... then came the ... ......

Re: subframe connectors [Re: dIc dOc Deity !] #1041766
07/28/11 11:55 AM
07/28/11 11:55 AM
Joined: Jan 2003
Posts: 25,851
United Socialist States of Ame...
T
tboomer Online work
Too Many Posts
tboomer  Online Work
Too Many Posts
T

Joined: Jan 2003
Posts: 25,851
United Socialist States of Ame...
Come on guys...Keep it civil..


The end is near.....
Re: subframe connectors [Re: tboomer] #1041767
07/28/11 12:44 PM
07/28/11 12:44 PM
Joined: Jan 2003
Posts: 20,645
So Near, Yet So Far
topside Offline
Too Many Posts
topside  Offline
Too Many Posts

Joined: Jan 2003
Posts: 20,645
So Near, Yet So Far
These older cars are so flexible that almost any added structure is a noticeable improvement in rigidity. A case in point: I had a '73 Nova hatchback and a '73 Z28 - likely less rigid than a Mopar due to the GM separate rubber-mounted ft subframe - and I put a pair of those bolt-on Competition Engineering connectors on each car. The improvement was VERY noticeable; the Z28 cornered more predictably (it was pretty much a SoCal canyon-runner) and the Nova quit creaking and was MUCH more solid. I'm sure both would have been even better properly welded & tied into the floor, but the point is even the simplest stiffening was a big improvement. FWIW I know of another car that has welded-in round tubing connectors and the round tubing still allows a little flex; IMO, square or rectangular tubing works better.

Re: subframe connectors [Re: tboomer] #1041768
07/28/11 12:53 PM
07/28/11 12:53 PM
Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
GTXKen Offline
super gas
GTXKen  Offline
super gas

Joined: Apr 2003
Posts: 3,968
North Riverside IL & Lowell IN
This topic seems to come up once a week and always seems to create so much tension and its really simple.

There are many solutions availiable, some simpler than others. Do a search and look at all the examples and then choose one that meets your specific needs/driving habits/usage of the car.

I used the Mancini weld in/bolt in and welded them in. My car is street driven with an occasional track visit or burn out. There is nearly no flex when I jack up one corner.

Re: subframe connectors [Re: GTXKen] #1041769
07/28/11 01:12 PM
07/28/11 01:12 PM
Joined: Jan 2003
Posts: 11,071
Berlin, N.J.
A
abodyjoe Offline
I Live Here
abodyjoe  Offline
I Live Here
A

Joined: Jan 2003
Posts: 11,071
Berlin, N.J.
i followed these directions. supplies were something like $25. they were easy to make and install..

http://www.bigblockdart.com/techpages/connectors.shtml


.


It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.

www.MoparMisfits.com
Re: subframe connectors [Re: Challenger 1] #1041770
07/28/11 01:46 PM
07/28/11 01:46 PM
Joined: Apr 2010
Posts: 1,216
Under My Car
Mopar_Country Offline
pro stock
Mopar_Country  Offline
pro stock

Joined: Apr 2010
Posts: 1,216
Under My Car
Quote:

Quote:

You will find ALL SORTS of flex just doing it that way...

LIFT UP one corner .... and see for yourself...




BS How would you know??




I did my connectors the same way, night and day difference. If I place a jack under the diff on one side it attempts to lift the whole side of the car. I would say they are very helpful.

Re: subframe connectors [Re: 68Bullit] #1041771
07/28/11 01:48 PM
07/28/11 01:48 PM
Joined: Apr 2010
Posts: 1,216
Under My Car
Mopar_Country Offline
pro stock
Mopar_Country  Offline
pro stock

Joined: Apr 2010
Posts: 1,216
Under My Car
Quote:

I know some connectors are pretty detailed with the custom fitting ridges, etc, but I'm just looking for some bolt-on or weld on straight square connectors. Anybody sell these fairly inexpensively?

Also, has anyone made their own????




I made my own for around 36 bucks in material. A little cut here and a weld there, and I'm good to go.

Follow the link Joe provided, that's how I did mine, works well.

Re: subframe connectors [Re: dIc dOc Deity !] #1041772
07/28/11 02:52 PM
07/28/11 02:52 PM
Joined: Nov 2004
Posts: 7,647
Houston Texas
PAINT IT BLACK Offline
Got a CHIP on my shoulder
PAINT IT BLACK  Offline
Got a CHIP on my shoulder

Joined: Nov 2004
Posts: 7,647
Houston Texas
Quote:

Hay AR ... the "cork" was in-it .... then came the ... ......




No, you are just an irritating aspect of Moparts at this point.

Your input means nothing and your on again-off again CAPS LOCK malfunction is getting OLD.

Let 'er rip...

Re: subframe connectors [Re: PAINT IT BLACK] #1041773
07/28/11 03:12 PM
07/28/11 03:12 PM
Joined: Jun 2010
Posts: 248
Ohio
aquamist60 Offline
enthusiast
aquamist60  Offline
enthusiast

Joined: Jun 2010
Posts: 248
Ohio
On my '73 Duster we cut the rear frame clip in front & back open, used (been a long time) I "think 3"x2" mild steel" And opened the front frame clip and drove it all the way through as 1 piece. Then welded everything closed and around the new connector. Welded everyplace that touched the floor. You could tell a difference as soon as the car was started, very solid. Opened the floor & welded the cage bars to the connectors. Not street driven anymore.
Took a '67 Coronet Stock eliminator car, but used C/M tube and did it very similar. Both cars are very rigid now. Don't remember the dia. of the tube, but it just did go in with some "inspiration" while it was up on a lift. Think it took about a days worth of labor start to finish.

Re: subframe connectors [Re: PAINT IT BLACK] #1041774
07/28/11 03:18 PM
07/28/11 03:18 PM
Joined: Jul 2008
Posts: 30,253
Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
The village idiot's idiot

Joined: Jul 2008
Posts: 30,253
Florida STAYcation
Quote:



No, you are just an irritating aspect of Moparts at this point.

Let 'er rip...




....you don't like it ? ...change-the-channel(don't read it - what-the-hell - if you find it that offensive USE the ignore feature).

That is what most people that have over a room-temperature IQ do.

Re: subframe connectors [Re: MonGoo$e] #1041775
07/28/11 10:31 PM
07/28/11 10:31 PM
Joined: Mar 2008
Posts: 571
Western NC
68Bullit Offline OP
mopar
68Bullit  Offline OP
mopar

Joined: Mar 2008
Posts: 571
Western NC
Quote:

much to the chagrin of everyone here i got the MagnumForce double tube style ones. Bolt on each end and to the floors.




I just finished looking at the Magnum Force website and this is what I think I'll go with. Do you notice a difference? And can you tell when you lift one corner of the car up?

Re: subframe connectors [Re: dIc dOc Deity !] #1041776
07/28/11 11:27 PM
07/28/11 11:27 PM
Joined: Nov 2004
Posts: 7,647
Houston Texas
PAINT IT BLACK Offline
Got a CHIP on my shoulder
PAINT IT BLACK  Offline
Got a CHIP on my shoulder

Joined: Nov 2004
Posts: 7,647
Houston Texas
Quote:



That is what most people that have over a room-temperature IQ do.




You haven't been important enough to take the time to ignore... I guess now that you're on my ignore list you've moved up a rung! Congrats.

Re: subframe connectors [Re: PAINT IT BLACK] #1041777
07/29/11 12:28 AM
07/29/11 12:28 AM
Joined: Mar 2005
Posts: 862
Iowa State fan
kilroy Offline
super stock
kilroy  Offline
super stock

Joined: Mar 2005
Posts: 862
Iowa State fan
Made my own on my '73 charger, used 1x3 rectangle tube. Welded from where frame horn for rear meets the cross frame (?) on the chassis to where the front frames meet the torsion bar cross member. My crappy former 18 year old selfs welding skills weren't very good but they made an IMMEDIATE difference. They are not straight, or should say parallel, with the rockers because the frame rail come in at different places but I thought it would make more sense to put a direct link between those frame pieces.

Cost me little to nothing and they DONT hang down at all! you have to look up from the pinch point of the rockers to see them.

Make your own, quick, easy, and cheap. You don't have to cut up the floors like everyone tries to convince you. Its not a roll cage.

6752045-0728112219.jpg (95 downloads)

1973 Charger, former SE, former auto

I'm not trying to be difficult, it comes naturally....
Re: subframe connectors [Re: PAINT IT BLACK] #1041778
07/29/11 03:06 AM
07/29/11 03:06 AM
Joined: Jul 2008
Posts: 30,253
Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
The village idiot's idiot

Joined: Jul 2008
Posts: 30,253
Florida STAYcation
Quote:

Quote:



That is what most people that have over a room-temperature IQ do.




You haven't been important enough to take the time to ignore... I guess now that you're on my ignore list you've moved up a rung! Congrats.




Now ME ignore YOU ? ...never happen. It still amazes me how someone WHO SAYS they are going to dental school ...can be so brain-dead.

Re: subframe connectors [Re: dIc dOc Deity !] #1041779
07/29/11 08:08 AM
07/29/11 08:08 AM
Joined: Dec 2004
Posts: 5,278
San Jose, California
D
DennisH Offline
Vacation
DennisH  Offline
Vacation
D

Joined: Dec 2004
Posts: 5,278
San Jose, California
Weld them or don't bother.

Re: subframe connectors [Re: DennisH ] #1041780
07/29/11 08:28 AM
07/29/11 08:28 AM
Joined: Mar 2005
Posts: 862
Iowa State fan
kilroy Offline
super stock
kilroy  Offline
super stock

Joined: Mar 2005
Posts: 862
Iowa State fan
Quote:

Weld them or don't bother.






1973 Charger, former SE, former auto

I'm not trying to be difficult, it comes naturally....
Re: subframe connectors [Re: DennisH ] #1041781
07/29/11 08:30 AM
07/29/11 08:30 AM
Joined: Jan 2003
Posts: 1,883
Northern OH
R
rapom Offline
top fuel
rapom  Offline
top fuel
R

Joined: Jan 2003
Posts: 1,883
Northern OH
Ditto

Re: subframe connectors [Re: rapom] #1041782
07/29/11 10:32 AM
07/29/11 10:32 AM
Joined: Dec 2005
Posts: 1,462
Mrytle Beach SC
J
johnscudashop Offline
pro stock
johnscudashop  Offline
pro stock
J

Joined: Dec 2005
Posts: 1,462
Mrytle Beach SC
Those custom made boxed frame connectors look good guys..On the US car tool subfrsme connectors. The install was not to bad, some trimming was required . It took me 2 or 3 hrs to get them fitted. I like the way they look (they look kinda factory) and the fact you dont have to cut into the floor board. The extra support being welded to the floor pan don't hurt either .I would do it again .

6752397-100_1750.jpg (219 downloads)
Re: subframe connectors [Re: johnscudashop] #1041783
07/30/11 06:28 PM
07/30/11 06:28 PM
Joined: Nov 2008
Posts: 1,490
Lethbridge, AB, Canada
dangina Offline
pro stock
dangina  Offline
pro stock

Joined: Nov 2008
Posts: 1,490
Lethbridge, AB, Canada
depending on what class your in for scca rules only allow bolt-in connectors - not welded in. Thats only if your running in autox...and if you care..

Last edited by dangina; 07/30/11 06:29 PM.
Re: subframe connectors [Re: dangina] #1041784
07/30/11 09:02 PM
07/30/11 09:02 PM
Joined: Dec 2004
Posts: 801
central CT
cudazappa Offline
super stock
cudazappa  Offline
super stock

Joined: Dec 2004
Posts: 801
central CT
SCCA allows weld in in all classes. But it can only be welded fore and aft. It is allowed to touch the floor pan. This applies to stock, street prepared and street mod classes. If you're playing in prepared, get a roll cage and gut the car...

IIRC there's been a recent rule change that allows a third (mid) point allowed to the subframe connector. I think this was about fox body 'stangs had an interferance issue with their seat so basically now the seat bolts to the SFC...

The quick way to install SFCs is to buy bolt ins and just weld them in. I went with autorust technicians 2x2 weld in kit and I had to slit the floors to allow them to pop through (at most 1/8", can't see underneath the carpet). Took me a one Saturday.


1971 Challenger
Re: subframe connectors [Re: johnscudashop] #1041785
07/30/11 09:46 PM
07/30/11 09:46 PM
Joined: Apr 2008
Posts: 273
FL
74-440Charger Offline
enthusiast
74-440Charger  Offline
enthusiast

Joined: Apr 2008
Posts: 273
FL
What gage metal are those connectors made from? They do look good

Re: subframe connectors [Re: dangina] #1041786
07/31/11 05:23 AM
07/31/11 05:23 AM
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
Kern Dog Offline
Striving for excellence
Kern Dog  Offline
Striving for excellence

Joined: Feb 2010
Posts: 18,493
Granite Bay CA
I made my own for the FrankenDuster. I bought 3x3 .120 wall tubing. I took cardboard and made templates of the floorpan, then traced the outlines on the tubing. They fit against the floor like the US CarTool units for a FRACTION of the cost. They are welded to the torsion bar crossmember, the floor and the rear rails. I drilled 3 holes in the bottom, 1/2" in size to make sure any water that may get in has a way out. They were epoxy primed then finished with seam sealer and undercoating. I wish I had pictures to show. They look like Plymouth built the car that way.

On a related note: Who would agree that the TALLER that the connectors are, the more rigidity they add? It seems in theory that 1x3 or 2 round tubes side by side are likely NOT as strong. This isn't meant to derail the OPs "Cheap and easy" requests, just an alternative question.....

Re: subframe connectors [Re: topside] #1041787
07/31/11 08:10 AM
07/31/11 08:10 AM
Joined: Jun 2008
Posts: 10,847
Oakdale CT
gdonovan Offline
I Live Here
gdonovan  Offline
I Live Here

Joined: Jun 2008
Posts: 10,847
Oakdale CT
Quote:

These older cars are so flexible that almost any added structure is a noticeable improvement in rigidity.




Years ago my Dart (slant six converted to 340 with a stick) use to flex around so bad from the daily pounding that the floor pan was cracking around the transmission tunnel!

Picked up a set of bars at a swap meet and welded them in place front and rear and the difference was night and day. Had problems getting the car to hook up after that because the body was no longer absorbing the "blow" when letting the clutch fly.

Re: subframe connectors [Re: Kern Dog] #1041788
08/01/11 11:49 PM
08/01/11 11:49 PM
Joined: Mar 2005
Posts: 862
Iowa State fan
kilroy Offline
super stock
kilroy  Offline
super stock

Joined: Mar 2005
Posts: 862
Iowa State fan
Quote:


On a related note: Who would agree that the TALLER that the connectors are, the more rigidity they add? It seems in theory that 1x3 or 2 round tubes side by side are likely NOT as strong. This isn't meant to derail the OPs "Cheap and easy" requests, just an alternative question.....




Technically 1x3 are taller, just in a different plane. and also technically a cylinder has one of the strongest crush factors...as long as it isnt impacted in the side.


1973 Charger, former SE, former auto

I'm not trying to be difficult, it comes naturally....
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