McVette

Hey guys I asked a couple weeks ago about my 79 L82 vette....I am still getting some serious heat in cab. I saw where some people posted about a transmission collar to shield the heat, I wanted to know if someone might could post a pic of it on here because my engine was replaced by PO and it does not have any type of insulation around it. I just wanted to see what it is suppose to look like?

Shark Racer

Can do you one better...

http://willcoxcorvette.com/product_i...ducts_id=24295

I just put one in on my car yesterday AM. You can literally stick it in from behind the distributor. The thicker side goes on the driver's side of the vehicle. Verdict not in yet on how effective it was.

AdamMeh

I know they came with one from the factory, so there has to be an advantage in having it. Shark Racer - if you don't mind, post up some feedback once you see what effect it has.

Thanks!
Adam

McVette

thanks just what I was looking for

speedreed8

foam collar installed on my 79

gdh

Shark Racer

That's the picture I used to motivate me to just go for it. Thanks, btw!

F22

Finally installed my collar and it works great! Stops a lot of the hot air, that used to come in freely.

Mooser

Put one on a couple of years back (when I actually drove the car). Honestly, the factory foam collar and reflective tunnel insulation should be the first step in any "too hot in the cockpit" type problem.

While it certainly doesn't make it cool in there, it does have a noticeable affect right away, particularly when the car is moving (less effective when the car is idling a lot) and if you can the car up, it's a relatively easy install.

THEN proceed to the various under carpet solutions (Dynamat etc)

M

AdamMeh

Thanks for the feedback on this guys! For about $20, seems like a good investment.

Adam

AirborneSilva

I wish I could say I had as good of results as F22 did. I put the collar on when I did my heads, can't really say I noticed any difference.

68/70Vette

Consider that the exhaust pipes immediately behind the firewall and along side of the transmission are only a few inches from your foot on the gas pedal. Separated by a few inches of air gap, a few fractions of an inch of fiberglass, a 1/2 inch of carpet. At this point, the exhaust pipes might well be 800 degrees F. The exhaust pipes put in a lot of heat.

I've posted this several times. The 68 and 69 Corvettes had much more extensive underbody insulation than following years. The 68/69 insulation covered the bottom half of the engine side of the firewall, and also in conjunction with the collar and tunnel insulation also covered the forward tunnel (not covered after 69) and also covered the bottom of the passenger and driver's compartment floor pans. The insulation under the driver's and passengers compartment was protected by steel shields. All this stuff is still available at Corvette vendors and easily to install. It's also not very expensive..it's not NCRS for post 69 cars however.

Also, since I've removed the front dash's of the 70, I've extensively covered the inside of the interior firewall with insulation.

An option for C3's that don't need catalytic reactors/smog configuration is to install the 69 factory sidepipe exhaust system. The external shrouds alone cost $2200. The hot exhaust gases are routed out of the car before the firewall. There's no superhot exhaust pipes running along side the transmission just inches for the floors.

F22

Let me add the perspective of recently installed block12ger headers on an SBC, four speed car, that had long tube headers. I used to roast in that C3, even at night, with the T tops off! I have to update the extensive thread that Adam started a long time ago, but here's what I'm experiencing now. The wrapped block huggers put out way less heat. The steering column actually stays cool, versus the 125 degrees that it was before!