Another Sub-Frame Question!!!

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Another Sub-Frame Question!!!

Post  billandlori on Sun Jul 11, 2010 3:17 am

I was talking with a buddy who races a C/SA Camaro.

He did a full rotiserie(sp) resto on it and he only used a roll bar, no SFC's. He felt the new solid floor was strong enough. Now, he only runs a 350/350 in it so big block torque will be a factor.

I am thinking that the SFC's would add quite a bit more to the structure. Is this correct?

Bill

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Re: Another Sub-Frame Question!!!

Post  bosshoss on Sun Jul 11, 2010 7:52 am

What year camaro? The early ones have that bolt in front subrame so I am thinking the frame connector would be a huge factor there. The newer ones are complete unibodies I think so less gain, in my opinion. Not sure about the new pan being stronger than original but even the original stuff flexed a lot so why would he expect it to be better than new after cutting everything out and welding new stuff in?

When my body guy did my 67 Mustang on the rotisserie we added a Mustangs Plus floor reinforcing kit. It included a bunch or reinforcing plates and an extra box section that welded in to the bottom of the rocker box full length. No traditional frame connector required. This is a street car so no roll bar and it is noticeably stiffer than stock.

dkp

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Re: Another Sub-Frame Question!!!

Post  jbozzelle on Sun Jul 11, 2010 10:51 am

Back in 1996 I had full SFCs and a full cage (bumper to bumper) put in my 78 Futura (first Fox chassis). It picked up 2 tenths in ET from the newly stiffened chassis.... For the 2 years prior the car slowed down ET wise and me and my Dad couldn't figure it out. We did after that next trip to the track...

So, I'd say the SFCs and cage, or bar, will help!

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Re: Another Sub-Frame Question!!!

Post  billandlori on Sun Jul 11, 2010 10:57 am

It is a 1968 Camaro he has. Not sure what he is thinking......I guess the roll bar adds some stiffness, but he may be leaving quite a bit on the table.

Two tenths can be hard to come by!! That is quite an improvement John!!

Thanks for the input again!!

Bill

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Re: Another Sub-Frame Question!!!

Post  jasonf on Sun Jul 11, 2010 5:10 pm

If he has a bar in it I doubt that subframe connectors will make that much of a difference. I had a 8pt bar in my pinto before I put in the SF connectors and I didn't really notice any difference but then I am not an A+ HeRo racer either. It is just a street car/occasional strip car.

Here is a good little thread about SFC and actual measurement to see how little they helped as far as twist goes.

http://www.pro-touring.com/forum/showthread.php?t=23278

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Re: Another Sub-Frame Question!!!

Post  billandlori on Sun Jul 11, 2010 5:47 pm

jasonf wrote:If he has a bar in it I doubt that subframe connectors will make that much of a difference. I had a 8pt bar in my pinto before I put in the SF connectors and I didn't really notice any difference but then I am not an A+ HeRo racer either. It is just a street car/occasional strip car.

Here is a good little thread about SFC and actual measurement to see how little they helped as far as twist goes.

http://www.pro-touring.com/forum/showthread.php?t=23278


That's some interesting reading!! Seems to make a big diff based on application.

I want to have swing out door bars on the cage so I think maybe the SFCs will be a good idea.

Bill

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