2 OEM Tunnel plates??

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Mar 14, 2012 | 02:37 AM

stevette17

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2 OEM Tunnel plates??

If the factory tunnel plates are 1/4" thick why not double up on them instead of buying a 3/8" one?

thanks

Mar 14, 2012 | 08:10 AM

davekp78

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Quote:

Originally Posted by stevette17

If the factory tunnel plates are 1/4" thick why not double up on them instead of buying a 3/8" one?

thanks

The OEM plates are .120". doubling them would be about the same as a 1/4" aftermarket.

Mar 14, 2012 | 01:24 PM

Don 79 TA

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Hmmmnnn
not sure if there would be a gapping issue or not
but if you want to try, i have one i am trying to sell
those bolts are long though
not sure if clearance might be an issue with some exhaust pipes

Mar 14, 2012 | 01:44 PM

Bill Dearborn

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Not sure how much a thicker plate does on a C6. There was some benefit to going with a thicker plate on a C5 and the factory incorporated thicker plates into the C6. If it would have helped to increase the thickness more than they did they could have easily done that.

Bill

Mar 14, 2012 | 03:35 PM

stevette17

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i have a vert so figured it will help more than a non vert

Mar 14, 2012 | 09:51 PM

thedigitel

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From: Colorado Springs CO

I was wondering about this as well. I'd think 2 OEM plates bolted up would be just as good as an aftermarket 1/4" plate. Anyone done this?

Mar 14, 2012 | 09:55 PM

carlrx7

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From: TEXOMA

St. Jude Donor '08-'09

dont know where, so i guess im just spreading rumors, but i read somewhere that said thicker tunnel plates stiffen the car in all the wrong places.

Mar 15, 2012 | 07:52 AM

davekp78

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From: merritt island fl

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Quote:

Originally Posted by thedigitel

I was wondering about this as well. I'd think 2 OEM plates bolted up would be just as good as an aftermarket 1/4" plate. Anyone done this?

I did it. I also added a 1/8" spacer between the two OEM plates for even more rigidity. Didn't notice any real change but I don't drive very hard.

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Mar 15, 2012 | 07:55 AM

davekp78

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From: merritt island fl

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Quote:

Originally Posted by carlrx7

dont know where, so i guess im just spreading rumors, but i read somewhere that said thicker tunnel plates stiffen the car in all the wrong places.

The tunnel plates don't affect the chassis or suspension at all but they may reduce body flexing.

Mar 15, 2012 | 11:07 AM

#10

HOXXOH

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Quote:

Originally Posted by dave pawlowski

I did it. I also added a 1/8" spacer between the two OEM plates for even more rigidity. Didn't notice any real change but I don't drive very hard.

Best move right there.

But not necessarily for the right reason. The space between the plates allows additional airflow and twice the surface area to provide more cooling, which is a main reason for the plate. Without a plate, the exhaust pipes would not only heat up the interior beyond belief, but also heat the torque tube, automatic transmission fluid lines, and fuel lines.

Considering the size of the holes, the low torque specs on the small bolts, and the thinness of the attachment flange, the plate itself has minimal structural benefit.

Mar 15, 2012 | 11:24 AM

#11

timd38

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From: Hudson WI

NCM Sinkhole Donor

I did the ceramic coated aluminum plate that is 3/8" and the tunnel is cooler and when I jack it, there is less flex.

It was only $100 shipped, but the guy went out of business..........