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C3 Corvettes, 1968 - 1982
C3 Tech/Performance
Tremic and Tunnel Insulation

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Tremic and Tunnel Insulation

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Jan 30, 2007 | 04:55 PM

#21

75 Hot One

Pro

Joined: Mar 2001

Posts: 633

Likes: 1

From: Hamilton, ON, Canada

Quote:

Originally Posted by Bullshark

My zero clearance issue was related to the the top of the TKO tranny and the tunnel. When I sat the transmission on the provided brackets, the top plates on the transmission pictured below sat up against the tunnel leaving no space for the insulation. I guess I could have just smashed it, but I decided it would be cleaner and more efficient to address heat insulation from the interior. Bullshark

The tunnel on the older C3's must be smaller than on the later ones. As I mentioned above, I had lots/enough space on my '75 for the insulation. In fact, in its bolted down position there's about 1/2" space between the trans & the insulation.

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