Re: Subframe connectors?
[Re: topside]
#2382437
10/05/17 02:48 PM
10/05/17 02:48 PM
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Joined: Dec 2013
Posts: 4,663 Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,663
Wichita
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I did subframe connectors first just 2x2 so I didn't have to cut the floor. It made a HUGE difference in the feel of the car. I recently added a 6pt. bar and was suprised it felt even better!
Anything you can do to stiffen our unibodies helps!
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Subframe connectors?
[Re: 70Drop]
#2382453
10/05/17 02:59 PM
10/05/17 02:59 PM
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Joined: Dec 2005
Posts: 11,490 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,490
Fulton County, PA
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A bodies are flimsy. Sub frame connectors are the first thing to do. Welded, and I prefer to section into or at least tie them into the floor somehow. Firewalls are also flimsy, that is usually addressed with a full cage.
If the results don't match the theory, change the theory.
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Re: Subframe connectors?
[Re: 70Drop]
#2382506
10/05/17 04:15 PM
10/05/17 04:15 PM
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Joined: Jan 2003
Posts: 11,705 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,705
Portage,michigan
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They make a HUGE difference. Make sure to install the two angled bars off the main hoop through the rear sear footwell to connect with the frame connectors, basically that makes a 6 point an 8 point and is an extremely good upgrade. Doing all this makes the car " one piece" your doors will thank you by continuing to shut properly
Last edited by B3422W5; 10/05/17 04:15 PM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: Subframe connectors?
[Re: 70Drop]
#2382539
10/05/17 05:16 PM
10/05/17 05:16 PM
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Joined: Oct 2007
Posts: 4,205 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,205
New York
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3" tall, through the floor.
Boffin Emeritus
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Re: Subframe connectors?
[Re: polyspheric]
#2382597
10/05/17 07:00 PM
10/05/17 07:00 PM
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Joined: Dec 2005
Posts: 11,490 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,490
Fulton County, PA
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3" tall, through the floor. Short of a 25.x chassis, this is most effective.
If the results don't match the theory, change the theory.
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Re: Subframe connectors?
[Re: 70Drop]
#2382716
10/05/17 10:35 PM
10/05/17 10:35 PM
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Joined: Oct 2007
Posts: 4,205 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,205
New York
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IIRC 3" still keeps the floor mostly intact. For those not familiar, the bending resistance improvement between 2" and 3" is huge: more than 2-1/2 times with only a 25% weight penalty.
Boffin Emeritus
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Re: Subframe connectors?
[Re: 70Drop]
#2382770
10/05/17 11:59 PM
10/05/17 11:59 PM
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Joined: Oct 2007
Posts: 4,205 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,205
New York
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... before you wrinkle the "C" pillar on a hard launch!
Boffin Emeritus
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Re: Subframe connectors?
[Re: CMcAllister]
#2382884
10/06/17 11:09 AM
10/06/17 11:09 AM
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Joined: Jan 2004
Posts: 4,561 Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,561
Motor City
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3" tall, through the floor. Short of a 25.x chassis, this is most effective. Yes, Mine are round tube chrome moly & tie in with the cage on my Challenger and go thru the torsion bar support & front frame rails. The short bar show with tab is my removable drivesahft loop mount that goes from frame connector to frame connector & meets the 25.5 rule about having the under car cross bar.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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Re: Subframe connectors?
[Re: 70Drop]
#2383157
10/06/17 09:58 PM
10/06/17 09:58 PM
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Joined: Oct 2007
Posts: 4,205 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,205
New York
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If you're not sure the boxes are water-tight, drill small drain holes at the lowest points so that water doesn't accumulate. Someone I know has simply caulked the ends with silicone (very clean first!) and it's been dry for years.
Boffin Emeritus
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